Checkpoint normalization against incoming hyperslab / selection / dataspace

improvements.

29 files changed, 1802 insertions, 1836 deletions

diff --git a/src/H5A.c b/src/H5A.c
index e5a7ae5..7eb77ca 100644
--- a/src/H5A.c
+++ b/src/H5A.c
@@ -270,7 +270,7 @@ H5Acreate2(hid_t loc_id, const char *attr_name, hid_t type_id, hid_t space_id,
     if(NULL == (type = (H5T_t *)H5I_object_verify(type_id, H5I_DATATYPE)))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a type")
     if(NULL == (space = (H5S_t *)H5I_object_verify(space_id, H5I_DATASPACE)))
-	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
+	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
 
     /* Verify access property list and get correct dxpl */
     if(H5P_verify_apl_and_dxpl(&aapl_id, H5P_CLS_AACC, &dxpl_id, loc_id, TRUE) < 0)
@@ -357,7 +357,7 @@ H5Acreate_by_name(hid_t loc_id, const char *obj_name, const char *attr_name,
     if(NULL == (type = (H5T_t *)H5I_object_verify(type_id, H5I_DATATYPE)))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a type")
     if(NULL == (space = (H5S_t *)H5I_object_verify(space_id, H5I_DATASPACE)))
-	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
+	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
 
     /* Set up opened group location to fill in */
     obj_loc.oloc = &obj_oloc;
diff --git a/src/H5Adeprec.c b/src/H5Adeprec.c
index a4713a7..ba792ff 100644
--- a/src/H5Adeprec.c
+++ b/src/H5Adeprec.c
@@ -135,7 +135,7 @@ H5Acreate1(hid_t loc_id, const char *name, hid_t type_id, hid_t space_id,
     if(NULL == (type = (H5T_t *)H5I_object_verify(type_id, H5I_DATATYPE)))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a type")
     if(NULL == (space = (H5S_t *)H5I_object_verify(space_id, H5I_DATASPACE)))
-	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
+	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
 
     /* Go do the real work for attaching the attribute to the dataset */
     if(NULL==(attr = H5A_create(&loc, name, type, space, plist_id, H5AC_ind_read_dxpl_id)))
diff --git a/src/H5Dchunk.c b/src/H5Dchunk.c
index 7a646af..ce27c01 100644
--- a/src/H5Dchunk.c
+++ b/src/H5Dchunk.c
@@ -884,7 +884,7 @@ H5D__chunk_io_init(const H5D_io_info_t *io_info, const H5D_type_info_t *type_inf
      * additions involving the offset and the hyperslab selection -QAK)
      */
     if((file_space_normalized = H5S_hyper_normalize_offset((H5S_t *)file_space, old_offset)) < 0)
-        HGOTO_ERROR(H5E_DATASET, H5E_BADSELECT, FAIL, "unable to normalize dataspace by offset")
+        HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't normalize selection")
 
     /* Decide the number of chunks in each dimension*/
     for(u = 0; u < f_ndims; u++) {
@@ -1119,10 +1119,10 @@ done:
         HDONE_ERROR(H5E_DATASPACE, H5E_CANTRELEASE, FAIL, "unable to release selection iterator")
     if(file_type && (H5T_close(file_type) < 0))
         HDONE_ERROR(H5E_DATATYPE, H5E_CANTFREE, FAIL, "Can't free temporary datatype")
-    if(file_space_normalized) {
+    if(file_space_normalized == TRUE) {
         /* (Casting away const OK -QAK) */
         if(H5S_hyper_denormalize_offset((H5S_t *)file_space, old_offset) < 0)
-            HDONE_ERROR(H5E_DATASET, H5E_BADSELECT, FAIL, "unable to normalize dataspace by offset")
+            HDONE_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't denormalize selection")
     } /* end if */
 
     FUNC_LEAVE_NOAPI(ret_value)
@@ -1322,8 +1322,7 @@ H5D__create_chunk_map_single(H5D_chunk_map_t *fm, const H5D_io_info_t
         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCOPY, FAIL, "unable to copy file selection")
 
     /* Move selection back to have correct offset in chunk */
-    if(H5S_SELECT_ADJUST_U(fm->single_space, coords) < 0)
-        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTSELECT, FAIL, "can't adjust chunk selection")
+    H5S_SELECT_ADJUST_U(fm->single_space, coords);
 
 #ifdef H5_HAVE_PARALLEL
     /* store chunk selection information */
@@ -1435,10 +1434,7 @@ H5D__create_chunk_file_map_hyper(H5D_chunk_map_t *fm, const H5D_io_info_t
             } /* end if */
 
             /* Move selection back to have correct offset in chunk */
-            if(H5S_SELECT_ADJUST_U(tmp_fchunk, coords) < 0) {
-                (void)H5S_close(tmp_fchunk);
-                HGOTO_ERROR(H5E_DATASPACE, H5E_CANTSELECT, FAIL, "can't adjust chunk selection")
-            } /* end if */
+            H5S_SELECT_ADJUST_U(tmp_fchunk, coords);
 
             /* Add temporary chunk to the list of chunks */
 
@@ -1637,8 +1633,8 @@ H5D__create_chunk_mem_map_hyper(const H5D_chunk_map_t *fm)
             } /* end for */
 
             /* Adjust the selection */
-            if(H5S_hyper_adjust_s(chunk_info->mspace,chunk_adjust) < 0) /*lint !e772 The chunk_adjust array will always be initialized */
-                HGOTO_ERROR(H5E_DATASPACE, H5E_CANTSELECT, FAIL, "can't adjust chunk selection")
+            if(H5S_hyper_adjust_s(chunk_info->mspace, chunk_adjust) < 0) /*lint !e772 The chunk_adjust array will always be initialized */
+                HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't adjust selection")
 
             /* Get the next chunk node in the skip list */
             curr_node=H5SL_next(curr_node);
diff --git a/src/H5Dcontig.c b/src/H5Dcontig.c
index a24abe6..28a7691 100644
--- a/src/H5Dcontig.c
+++ b/src/H5Dcontig.c
@@ -403,7 +403,7 @@ H5D__contig_construct(H5F_t *f, H5D_t *dset)
 
     /*
      * The maximum size of the dataset cannot exceed the storage size.
-     * Also, only the slowest varying dimension of a simple data space
+     * Also, only the slowest varying dimension of a simple dataspace
      * can be extendible (currently only for external data storage).
      */
 
diff --git a/src/H5Ddeprec.c b/src/H5Ddeprec.c
index c6a03c2..f4c6797 100644
--- a/src/H5Ddeprec.c
+++ b/src/H5Ddeprec.c
@@ -95,7 +95,7 @@ static herr_t H5D__extend(H5D_t *dataset, const hsize_t *size, hid_t dxpl_id);
  *		properties (DCPL_ID).
  *
  *		All arguments are copied into the dataset, so the caller is
- *		allowed to derive new types, data spaces, and creation
+ *		allowed to derive new types, dataspaces, and creation
  *		parameters from the old ones and reuse them in calls to
  *		create other datasets.
  *
@@ -287,7 +287,7 @@ H5D__extend(H5D_t *dataset, const hsize_t *size, hid_t dxpl_id)
     HDcompile_assert(sizeof(old_dims) == sizeof(dataset->shared->curr_dims));
     HDmemcpy(old_dims, dataset->shared->curr_dims, H5S_MAX_RANK * sizeof(old_dims[0]));
 
-    /* Increase the size of the data space */
+    /* Increase the size of the dataspace */
     if((changed = H5S_extend(dataset->shared->space, size)) < 0)
 	HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to increase size of dataspace")
 
diff --git a/src/H5Defl.c b/src/H5Defl.c
index 387cbe3..b9a626f 100644
--- a/src/H5Defl.c
+++ b/src/H5Defl.c
@@ -145,7 +145,7 @@ H5D__efl_construct(H5F_t *f, H5D_t *dset)
 
     /*
      * The maximum size of the dataset cannot exceed the storage size.
-     * Also, only the slowest varying dimension of a simple data space
+     * Also, only the slowest varying dimension of a simple dataspace
      * can be extendible (currently only for external data storage).
      */
 
diff --git a/src/H5Dint.c b/src/H5Dint.c
index 2048e49..febf76a 100644
--- a/src/H5Dint.c
+++ b/src/H5Dint.c
@@ -503,7 +503,7 @@ done:
 /*-------------------------------------------------------------------------
  * Function:    H5D__get_space_status
  *
- * Purpose:     Returns the status of data space allocation.
+ * Purpose:     Returns the status of dataspace allocation.
  *
  * Return:
  *              Success:        Non-negative
@@ -2854,13 +2854,13 @@ H5D__set_extent(H5D_t *dset, const hsize_t *size, hid_t dxpl_id)
             for(u = 0; u < dset->shared->layout.storage.u.virt.list_nused; u++) {
                 /* Patch extent */
                 if(H5S_set_extent(dset->shared->layout.storage.u.virt.list[u].source_dset.virtual_select, size) < 0)
-                    HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of data space")
+                    HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of dataspace")
                 dset->shared->layout.storage.u.virt.list[u].virtual_space_status = H5O_VIRTUAL_STATUS_CORRECT;
 
                 /* Patch sub-source datasets */
                 for(v = 0; v < dset->shared->layout.storage.u.virt.list[u].sub_dset_nalloc; v++)
                     if(H5S_set_extent(dset->shared->layout.storage.u.virt.list[u].sub_dset[v].virtual_select, size) < 0)
-                        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of data space")
+                        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of dataspace")
             } /* end for */
 
             /* Mark virtual datasets as not fully initialized so internal
@@ -3555,9 +3555,9 @@ H5D_get_space(H5D_t *dset)
         if(H5D__virtual_set_extent_unlim(dset, H5AC_ind_read_dxpl_id) < 0)
             HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to update virtual dataset extent")
 
-    /* Read the data space message and return a data space object */
+    /* Read the dataspace message and return a dataspace object */
     if(NULL == (space = H5S_copy(dset->shared->space, FALSE, TRUE)))
-        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to get data space")
+        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to get dataspace")
 
     /* Create an atom */
     if((ret_value = H5I_register(H5I_DATASPACE, space, TRUE)) < 0)
diff --git a/src/H5Dio.c b/src/H5Dio.c
index f5087da..b5885e0 100644
--- a/src/H5Dio.c
+++ b/src/H5Dio.c
@@ -103,14 +103,14 @@ H5FL_DEFINE(H5D_chunk_map_t);
  *		passed to this function with the PLIST_ID argument.
  *
  *		The FILE_SPACE_ID can be the constant H5S_ALL which indicates
- *		that the entire file data space is to be referenced.
+ *		that the entire file dataspace is to be referenced.
  *
  *		The MEM_SPACE_ID can be the constant H5S_ALL in which case
- *		the memory data space is the same as the file data space
+ *		the memory dataspace is the same as the file dataspace
  *		defined when the dataset was created.
  *
- *		The number of elements in the memory data space must match
- *		the number of elements in the file data space.
+ *		The number of elements in the memory dataspace must match
+ *		the number of elements in the file dataspace.
  *
  *		The PLIST_ID can be the constant H5P_DEFAULT in which
  *		case the default data transfer properties are used.
@@ -142,11 +142,11 @@ H5Dread(hid_t dset_id, hid_t mem_type_id, hid_t mem_space_id,
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset")
 
     if(mem_space_id < 0 || file_space_id < 0)
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
 
     if(H5S_ALL != mem_space_id) {
 	if(NULL == (mem_space = (const H5S_t *)H5I_object_verify(mem_space_id, H5I_DATASPACE)))
-	    HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
+	    HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
 
 	/* Check for valid selection */
 	if(H5S_SELECT_VALID(mem_space) != TRUE)
@@ -154,7 +154,7 @@ H5Dread(hid_t dset_id, hid_t mem_type_id, hid_t mem_space_id,
     } /* end if */
     if(H5S_ALL != file_space_id) {
 	if(NULL == (file_space = (const H5S_t *)H5I_object_verify(file_space_id, H5I_DATASPACE)))
-	    HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
+	    HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
 
 	/* Check for valid selection */
 	if(H5S_SELECT_VALID(file_space) != TRUE)
@@ -189,14 +189,14 @@ done:
  *		PLIST_ID argument.
  *
  *		The FILE_SPACE_ID can be the constant H5S_ALL which indicates
- *		that the entire file data space is to be referenced.
+ *		that the entire file dataspace is to be referenced.
  *
  *		The MEM_SPACE_ID can be the constant H5S_ALL in which case
- *		the memory data space is the same as the file data space
+ *		the memory dataspace is the same as the file dataspace
  *		defined when the dataset was created.
  *
- *		The number of elements in the memory data space must match
- *		the number of elements in the file data space.
+ *		The number of elements in the memory dataspace must match
+ *		the number of elements in the file dataspace.
  *
  *		The PLIST_ID can be the constant H5P_DEFAULT in which
  *		case the default data transfer properties are used.
@@ -265,7 +265,7 @@ H5Dwrite(hid_t dset_id, hid_t mem_type_id, hid_t mem_space_id,
 	    if(H5S_SELECT_VALID(file_space) != TRUE)
 		HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "file selection+offset not within extent")
 	} /* end if */
-    }
+    } /* end if */
 
     if(H5D__pre_write(dset, direct_write, mem_type_id, mem_space, file_space, dxpl_id, buf) < 0) 
 	HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "can't prepare for writing data")
@@ -375,7 +375,7 @@ H5D__read(H5D_t *dataset, hid_t mem_type_id, const H5S_t *mem_space,
     hbool_t type_info_init = FALSE;     /* Whether the datatype info has been initialized */
     H5S_t * projected_mem_space = NULL; /* If not NULL, ptr to dataspace containing a     */
                                         /* projection of the supplied mem_space to a new  */
-                                        /* data space with rank equal to that of          */
+                                        /* dataspace with rank equal to that of          */
                                         /* file_space.                                    */
                                         /*                                                */
                                         /* This field is only used if                     */
@@ -427,7 +427,7 @@ H5D__read(H5D_t *dataset, hid_t mem_type_id, const H5S_t *mem_space,
 
     /* Make certain that the number of elements in each selection is the same */
     if(nelmts != (hsize_t)H5S_GET_SELECT_NPOINTS(file_space))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "src and dest data spaces have different sizes")
+        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "src and dest dataspaces have different number of elements selected")
 
     /* Check for a NULL buffer, after the H5S_ALL dataspace selection has been handled */
     if(NULL == buf) {
@@ -601,7 +601,7 @@ H5D__write(H5D_t *dataset, hid_t mem_type_id, const H5S_t *mem_space,
     hbool_t type_info_init = FALSE;     /* Whether the datatype info has been initialized */
     H5S_t * projected_mem_space = NULL; /* If not NULL, ptr to dataspace containing a     */
                                         /* projection of the supplied mem_space to a new  */
-                                        /* data space with rank equal to that of          */
+                                        /* dataspace with rank equal to that of          */
                                         /* file_space.                                    */
                                         /*                                                */
                                         /* This field is only used if                     */
@@ -691,7 +691,7 @@ H5D__write(H5D_t *dataset, hid_t mem_type_id, const H5S_t *mem_space,
 
     /* Make certain that the number of elements in each selection is the same */
     if(nelmts != (hsize_t)H5S_GET_SELECT_NPOINTS(file_space))
-	HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "src and dest data spaces have different sizes")
+	HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "src and dest dataspaces have different number of elements selected")
 
     /* Check for a NULL buffer, after the H5S_ALL dataspace selection has been handled */
     if(NULL == buf) {
@@ -752,7 +752,7 @@ H5D__write(H5D_t *dataset, hid_t mem_type_id, const H5S_t *mem_space,
         HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to set up I/O operation")
     io_info_init = TRUE;
 
-    /* Allocate data space and initialize it if it hasn't been. */
+    /* Allocate dataspace and initialize it if it hasn't been. */
     if(nelmts > 0 && dataset->shared->dcpl_cache.efl.nused == 0 &&
             !(*dataset->shared->layout.ops->is_space_alloc)(&dataset->shared->layout.storage)) {
         hssize_t file_nelmts;   /* Number of elements in file dataset's dataspace */
@@ -978,7 +978,7 @@ H5D__typeinfo_init(const H5D_t *dset, const H5D_dxpl_cache_t *dxpl_cache,
     } /* end else */
 
     /*
-     * Locate the type conversion function and data space conversion
+     * Locate the type conversion function and dataspace conversion
      * functions, and set up the element numbering information. If a data
      * type conversion is necessary then register datatype atoms. Data type
      * conversion is necessary if the user has set the `need_bkg' to a high
diff --git a/src/H5Dmpio.c b/src/H5Dmpio.c
index 441cc96..97b4fae 100644
--- a/src/H5Dmpio.c
+++ b/src/H5Dmpio.c
@@ -1643,7 +1643,7 @@ done:
  *              2) Gather all the information to the root process
  *
  *              3) Root process will do the following:
- *                 a) Obtain chunk addresses for all chunks in this data space
+ *                 a) Obtain chunk addresses for all chunks in this dataspace
  *                 b) With the consideration of the user option, calculate IO mode for each chunk
  *                 c) Build MPI derived datatype to combine "chunk address" and "assign_io" information
  *                      in order to do MPI Bcast only once
diff --git a/src/H5Dvirtual.c b/src/H5Dvirtual.c
index c85b1e9..c0def50 100644
--- a/src/H5Dvirtual.c
+++ b/src/H5Dvirtual.c
@@ -1558,7 +1558,7 @@ H5D__virtual_set_extent_unlim(const H5D_t *dset, hid_t dxpl_id)
     if(changed) {
         /* Update VDS extent */
         if(H5S_set_extent(dset->shared->space, new_dims) < 0)
-            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of data space")
+            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of dataspace")
 
         /* Mark the space as dirty, for later writing to the file */
         if(H5F_INTENT(dset->oloc.file) & H5F_ACC_RDWR) 
@@ -1681,24 +1681,24 @@ H5D__virtual_set_extent_unlim(const H5D_t *dset, hid_t dxpl_id)
             /* Update top level virtual_select and clipped_virtual_select
              * extents */
             if(H5S_set_extent(storage->list[i].source_dset.virtual_select, new_dims) < 0)
-                HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of data space")
+                HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of dataspace")
             if((storage->list[i].source_dset.clipped_virtual_select
                     != storage->list[i].source_dset.virtual_select)
                     && storage->list[i].source_dset.clipped_virtual_select)
                 if(H5S_set_extent(storage->list[i].source_dset.clipped_virtual_select, new_dims) < 0)
-                    HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of data space")
+                    HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of dataspace")
 
             /* Update sub dataset virtual_select and clipped_virtual_select
              * extents */
             for(j = 0; j < storage->list[i].sub_dset_nalloc; j++)
                 if(storage->list[i].sub_dset[j].virtual_select) {
                     if(H5S_set_extent(storage->list[i].sub_dset[j].virtual_select, new_dims) < 0)
-                        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of data space")
+                        HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of dataspace")
                     if((storage->list[i].sub_dset[j].clipped_virtual_select
                             != storage->list[i].sub_dset[j].virtual_select)
                             && storage->list[i].sub_dset[j].clipped_virtual_select)
                         if(H5S_set_extent(storage->list[i].sub_dset[j].clipped_virtual_select, new_dims) < 0)
-                            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of data space")
+                            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of dataspace")
                 } /* end if */
                 else
                     HDassert(!storage->list[i].sub_dset[j].clipped_virtual_select);
@@ -2185,7 +2185,7 @@ H5D__virtual_pre_io(H5D_io_info_t *io_info,
 
                         /* Temporarily set extent of virtual selection to bounds */
                         if(H5S_set_extent(storage->list[i].sub_dset[j].virtual_select, vbounds_end) < 0)
-                            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of data space")
+                            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of dataspace")
 
                         /* Get current VDS dimensions */
                         if(H5S_get_simple_extent_dims(io_info->dset->shared->space, tmp_dims, NULL) < 0)
@@ -2209,9 +2209,9 @@ H5D__virtual_pre_io(H5D_io_info_t *io_info,
                         /* Set extents of virtual_select and
                          * clipped_virtual_select to virtual extent */
                         if(H5S_set_extent(storage->list[i].sub_dset[j].virtual_select, tmp_dims) < 0)
-                            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of data space")
+                            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of dataspace")
                         if(H5S_set_extent(storage->list[i].sub_dset[j].clipped_virtual_select, tmp_dims) < 0)
-                            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of data space")
+                            HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of dataspace")
                     } /* end if */
                 } /* end if */
 
diff --git a/src/H5I.c b/src/H5I.c
index 0fe9782..cbca879 100644
--- a/src/H5I.c
+++ b/src/H5I.c
@@ -890,7 +890,7 @@ H5I_subst(hid_t id, const void *new_object)
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-} /* end if */
+} /* end H5I_subst() */
 
 
 /*-------------------------------------------------------------------------
@@ -922,7 +922,7 @@ H5I_object(hid_t id)
     } /* end if */
 
     FUNC_LEAVE_NOAPI(ret_value)
-} /* end if */
+} /* end H5I_object() */
 
 
 /*-------------------------------------------------------------------------
diff --git a/src/H5Omessage.c b/src/H5Omessage.c
index 7e6463a..ff4c57c 100644
--- a/src/H5Omessage.c
+++ b/src/H5Omessage.c
@@ -1753,7 +1753,7 @@ done:
 /*-------------------------------------------------------------------------
  * Function:	H5O_msg_encode
  *
- * Purpose:	Encode an object(data type and simple data space only)
+ * Purpose:	Encode an object(data type and simple dataspace only)
  *              description into a buffer.
  *
  * Return:	Success:	Non-negative
diff --git a/src/H5Pdcpl.c b/src/H5Pdcpl.c
index 1237bfc..40d30d6 100644
--- a/src/H5Pdcpl.c
+++ b/src/H5Pdcpl.c
@@ -2373,7 +2373,7 @@ H5Pget_virtual_vspace(hid_t dcpl_id, size_t index)
 
     /* Register ID */
     if((ret_value = H5I_register(H5I_DATASPACE, space, TRUE)) < 0)
-        HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register data space")
+        HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register dataspace")
 
 done:
     /* Free space on failure */
@@ -2464,7 +2464,7 @@ H5Pget_virtual_srcspace(hid_t dcpl_id, size_t index)
 
     /* Register ID */
     if((ret_value = H5I_register(H5I_DATASPACE, space, TRUE)) < 0)
-        HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register data space")
+        HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register dataspace")
 
 done:
     /* Free space on failure */
diff --git a/src/H5S.c b/src/H5S.c
index 2fab71a..6183a7d 100644
--- a/src/H5S.c
+++ b/src/H5S.c
@@ -1388,8 +1388,7 @@ H5S_set_extent_simple(H5S_t *space, unsigned rank, const hsize_t *dims,
     /* Selection related cleanup */
 
     /* Set offset to zeros */
-    for(u = 0; u < space->extent.rank; u++)
-        space->select.offset[u] = 0;
+    HDmemset(space->select.offset, 0, sizeof(hsize_t) * space->extent.rank);
     space->select.offset_changed = FALSE;
 
     /* If the selection is 'all', update the number of elements selected */
diff --git a/src/H5Sall.c b/src/H5Sall.c
index fb6b45f..09adc15 100644
--- a/src/H5Sall.c
+++ b/src/H5Sall.c
@@ -17,7 +17,7 @@
  * Programmer:  Quincey Koziol <koziol@ncsa.uiuc.edu>
  *              Tuesday, June 16, 1998
  *
- * Purpose:	"All" selection data space I/O functions.
+ * Purpose:	"All" selection dataspace I/O functions.
  */
 
 #include "H5Smodule.h"          /* This source code file is part of the H5S module */
@@ -32,59 +32,59 @@
 /* Static function prototypes */
 
 /* Selection callbacks */
-static herr_t H5S_all_copy(H5S_t *dst, const H5S_t *src, hbool_t share_selection);
-static herr_t H5S_all_get_seq_list(const H5S_t *space, unsigned flags,
+static herr_t H5S__all_copy(H5S_t *dst, const H5S_t *src, hbool_t share_selection);
+static herr_t H5S__all_get_seq_list(const H5S_t *space, unsigned flags,
     H5S_sel_iter_t *iter, size_t maxseq, size_t maxbytes,
     size_t *nseq, size_t *nbytes, hsize_t *off, size_t *len);
-static herr_t H5S_all_release(H5S_t *space);
-static htri_t H5S_all_is_valid(const H5S_t *space);
-static hssize_t H5S_all_serial_size(const H5S_t *space);
-static herr_t H5S_all_serialize(const H5S_t *space, uint8_t **p);
-static herr_t H5S_all_deserialize(H5S_t *space, uint32_t version, uint8_t flags,
+static herr_t H5S__all_release(H5S_t *space);
+static htri_t H5S__all_is_valid(const H5S_t *space);
+static hssize_t H5S__all_serial_size(const H5S_t *space);
+static herr_t H5S__all_serialize(const H5S_t *space, uint8_t **p);
+static herr_t H5S__all_deserialize(H5S_t *space, uint32_t version, uint8_t flags,
     const uint8_t **p);
-static herr_t H5S_all_bounds(const H5S_t *space, hsize_t *start, hsize_t *end);
-static herr_t H5S_all_offset(const H5S_t *space, hsize_t *off);
+static herr_t H5S__all_bounds(const H5S_t *space, hsize_t *start, hsize_t *end);
+static herr_t H5S__all_offset(const H5S_t *space, hsize_t *off);
 static int H5S__all_unlim_dim(const H5S_t *space);
-static htri_t H5S_all_is_contiguous(const H5S_t *space);
-static htri_t H5S_all_is_single(const H5S_t *space);
-static htri_t H5S_all_is_regular(const H5S_t *space);
-static herr_t H5S_all_adjust_u(H5S_t *space, const hsize_t *offset);
-static herr_t H5S_all_project_scalar(const H5S_t *space, hsize_t *offset);
-static herr_t H5S_all_project_simple(const H5S_t *space, H5S_t *new_space, hsize_t *offset);
-static herr_t H5S_all_iter_init(H5S_sel_iter_t *iter, const H5S_t *space);
+static htri_t H5S__all_is_contiguous(const H5S_t *space);
+static htri_t H5S__all_is_single(const H5S_t *space);
+static htri_t H5S__all_is_regular(const H5S_t *space);
+static void H5S__all_adjust_u(H5S_t *space, const hsize_t *offset);
+static herr_t H5S__all_project_scalar(const H5S_t *space, hsize_t *offset);
+static herr_t H5S__all_project_simple(const H5S_t *space, H5S_t *new_space, hsize_t *offset);
+static herr_t H5S__all_iter_init(H5S_sel_iter_t *iter, const H5S_t *space);
 
 /* Selection iteration callbacks */
-static herr_t H5S_all_iter_coords(const H5S_sel_iter_t *iter, hsize_t *coords);
-static herr_t H5S_all_iter_block(const H5S_sel_iter_t *iter, hsize_t *start, hsize_t *end);
-static hsize_t H5S_all_iter_nelmts(const H5S_sel_iter_t *iter);
-static htri_t H5S_all_iter_has_next_block(const H5S_sel_iter_t *iter);
-static herr_t H5S_all_iter_next(H5S_sel_iter_t *sel_iter, size_t nelem);
-static herr_t H5S_all_iter_next_block(H5S_sel_iter_t *sel_iter);
-static herr_t H5S_all_iter_release(H5S_sel_iter_t *sel_iter);
+static herr_t H5S__all_iter_coords(const H5S_sel_iter_t *iter, hsize_t *coords);
+static herr_t H5S__all_iter_block(const H5S_sel_iter_t *iter, hsize_t *start, hsize_t *end);
+static hsize_t H5S__all_iter_nelmts(const H5S_sel_iter_t *iter);
+static htri_t H5S__all_iter_has_next_block(const H5S_sel_iter_t *iter);
+static herr_t H5S__all_iter_next(H5S_sel_iter_t *sel_iter, size_t nelem);
+static herr_t H5S__all_iter_next_block(H5S_sel_iter_t *sel_iter);
+static herr_t H5S__all_iter_release(H5S_sel_iter_t *sel_iter);
 
 /* Selection properties for "all" selections */
 const H5S_select_class_t H5S_sel_all[1] = {{
     H5S_SEL_ALL,
 
     /* Methods on selection */
-    H5S_all_copy,
-    H5S_all_get_seq_list,
-    H5S_all_release,
-    H5S_all_is_valid,
-    H5S_all_serial_size,
-    H5S_all_serialize,
-    H5S_all_deserialize,
-    H5S_all_bounds,
-    H5S_all_offset,
+    H5S__all_copy,
+    H5S__all_get_seq_list,
+    H5S__all_release,
+    H5S__all_is_valid,
+    H5S__all_serial_size,
+    H5S__all_serialize,
+    H5S__all_deserialize,
+    H5S__all_bounds,
+    H5S__all_offset,
     H5S__all_unlim_dim,
     NULL,
-    H5S_all_is_contiguous,
-    H5S_all_is_single,
-    H5S_all_is_regular,
-    H5S_all_adjust_u,
-    H5S_all_project_scalar,
-    H5S_all_project_simple,
-    H5S_all_iter_init,
+    H5S__all_is_contiguous,
+    H5S__all_is_single,
+    H5S__all_is_regular,
+    H5S__all_adjust_u,
+    H5S__all_project_scalar,
+    H5S__all_project_simple,
+    H5S__all_iter_init,
 }};
 
 /* Iteration properties for "all" selections */
@@ -92,18 +92,18 @@ static const H5S_sel_iter_class_t H5S_sel_iter_all[1] = {{
     H5S_SEL_ALL,
 
     /* Methods on selection iterator */
-    H5S_all_iter_coords,
-    H5S_all_iter_block,
-    H5S_all_iter_nelmts,
-    H5S_all_iter_has_next_block,
-    H5S_all_iter_next,
-    H5S_all_iter_next_block,
-    H5S_all_iter_release,
+    H5S__all_iter_coords,
+    H5S__all_iter_block,
+    H5S__all_iter_nelmts,
+    H5S__all_iter_has_next_block,
+    H5S__all_iter_next,
+    H5S__all_iter_next_block,
+    H5S__all_iter_release,
 }};
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5S_all_iter_init
+ * Function:	H5S__all_iter_init
  *
  * Purpose:	Initializes iteration information for "all" selection.
  *
@@ -112,35 +112,33 @@ static const H5S_sel_iter_class_t H5S_sel_iter_all[1] = {{
  * Programmer:	Quincey Koziol
  *              Tuesday, June 16, 1998
  *
- * Modifications:
- *
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5S_all_iter_init (H5S_sel_iter_t *iter, const H5S_t *space)
+H5S__all_iter_init(H5S_sel_iter_t *iter, const H5S_t *space)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
-    HDassert (space && H5S_SEL_ALL==H5S_GET_SELECT_TYPE(space));
-    HDassert (iter);
+    HDassert(space && H5S_SEL_ALL == H5S_GET_SELECT_TYPE(space));
+    HDassert(iter);
 
     /* Initialize the number of elements to iterate over */
-    iter->elmt_left=H5S_GET_SELECT_NPOINTS(space);
+    iter->elmt_left = H5S_GET_SELECT_NPOINTS(space);
 
     /* Start at the upper left location */
-    iter->u.all.elmt_offset=0;
-    iter->u.all.byte_offset=0;
+    iter->u.all.elmt_offset = 0;
+    iter->u.all.byte_offset = 0;
 
     /* Initialize type of selection iterator */
-    iter->type=H5S_sel_iter_all;
+    iter->type = H5S_sel_iter_all;
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_all_iter_init() */
+}   /* H5S__all_iter_init() */
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5S_all_iter_coords
+ * Function:	H5S__all_iter_coords
  *
  * Purpose:	Retrieve the current coordinates of iterator for current
  *              selection
@@ -150,32 +148,30 @@ H5S_all_iter_init (H5S_sel_iter_t *iter, const H5S_t *space)
  * Programmer:	Quincey Koziol
  *              Tuesday, April 22, 2003
  *
- * Modifications:
- *
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5S_all_iter_coords (const H5S_sel_iter_t *iter, hsize_t *coords)
+H5S__all_iter_coords(const H5S_sel_iter_t *iter, hsize_t *coords)
 {
-    herr_t ret_value=SUCCEED;        /* Return value */
+    herr_t ret_value = SUCCEED;        /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC
 
     /* Check args */
-    HDassert (iter);
-    HDassert (coords);
+    HDassert(iter);
+    HDassert(coords);
 
     /* Calculate the coordinates for the current iterator offset */
-    if(H5VM_array_calc(iter->u.all.elmt_offset,iter->rank,iter->dims,coords)<0)
-        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTGET, FAIL, "can't retrieve coordinates");
+    if(H5VM_array_calc(iter->u.all.elmt_offset, iter->rank, iter->dims, coords) < 0)
+        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTGET, FAIL, "can't retrieve coordinates")
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_all_iter_coords() */
+}   /* H5S__all_iter_coords() */
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5S_all_iter_block
+ * Function:	H5S__all_iter_block
  *
  * Purpose:	Retrieve the current block of iterator for current
  *              selection
@@ -185,38 +181,36 @@ done:
  * Programmer:	Quincey Koziol
  *              Monday, June 2, 2003
  *
- * Modifications:
- *
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5S_all_iter_block (const H5S_sel_iter_t *iter, hsize_t *start, hsize_t *end)
+H5S__all_iter_block(const H5S_sel_iter_t *iter, hsize_t *start, hsize_t *end)
 {
     unsigned u;                 /* Local index variable */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
-    HDassert (iter);
-    HDassert (start);
-    HDassert (end);
+    HDassert(iter);
+    HDassert(start);
+    HDassert(end);
 
-    for(u=0; u<iter->rank; u++) {
+    for(u = 0; u < iter->rank; u++) {
         /* Set the start of the 'all' block */
         /* (Always '0' coordinates for now) */
-        start[u]=0;
+        start[u] = 0;
 
         /* Compute the end of the 'all' block */
         /* (Always size of the extent for now) */
-        end[u]=iter->dims[u]-1;
+        end[u] = iter->dims[u] - 1;
     } /* end for */
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_all_iter_coords() */
+}   /* H5S__all_iter_block() */
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5S_all_iter_nelmts
+ * Function:	H5S__all_iter_nelmts
  *
  * Purpose:	Return number of elements left to process in iterator
  *
@@ -225,29 +219,27 @@ H5S_all_iter_block (const H5S_sel_iter_t *iter, hsize_t *start, hsize_t *end)
  * Programmer:	Quincey Koziol
  *              Tuesday, June 16, 1998
  *
- * Modifications:
- *
  *-------------------------------------------------------------------------
  */
 static hsize_t
-H5S_all_iter_nelmts (const H5S_sel_iter_t *iter)
+H5S__all_iter_nelmts(const H5S_sel_iter_t *iter)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
-    HDassert (iter);
+    HDassert(iter);
 
     FUNC_LEAVE_NOAPI(iter->elmt_left)
-}   /* H5S_all_iter_nelmts() */
+}   /* H5S__all_iter_nelmts() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_all_iter_next
+    H5S__all_iter_has_next_block
  PURPOSE
     Check if there is another block left in the current iterator
  USAGE
-    htri_t H5S_all_iter_has_next_block(iter)
+    htri_t H5S__all_iter_has_next_block(iter)
         const H5S_sel_iter_t *iter;       IN: Pointer to selection iterator
  RETURNS
     Non-negative (TRUE/FALSE) on success/Negative on failure
@@ -259,24 +251,24 @@ H5S_all_iter_nelmts (const H5S_sel_iter_t *iter)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static htri_t
-H5S_all_iter_has_next_block (const H5S_sel_iter_t H5_ATTR_UNUSED *iter)
+H5S__all_iter_has_next_block(const H5S_sel_iter_t H5_ATTR_UNUSED *iter)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
-    HDassert (iter);
+    HDassert(iter);
 
     FUNC_LEAVE_NOAPI(FALSE)
-}   /* H5S_all_iter_has_next_block() */
+}   /* H5S__all_iter_has_next_block() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_all_iter_next
+    H5S__all_iter_next
  PURPOSE
     Increment selection iterator
  USAGE
-    herr_t H5S_all_iter_next(iter, nelem)
+    herr_t H5S__all_iter_next(iter, nelem)
         H5S_sel_iter_t *iter;       IN: Pointer to selection iterator
         size_t nelem;               IN: Number of elements to advance by
  RETURNS
@@ -289,29 +281,29 @@ H5S_all_iter_has_next_block (const H5S_sel_iter_t H5_ATTR_UNUSED *iter)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_all_iter_next(H5S_sel_iter_t *iter, size_t nelem)
+H5S__all_iter_next(H5S_sel_iter_t *iter, size_t nelem)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
-    HDassert (iter);
-    HDassert (nelem>0);
+    HDassert(iter);
+    HDassert(nelem > 0);
 
     /* Increment the iterator */
-    iter->u.all.elmt_offset+=nelem;
-    iter->u.all.byte_offset+=(nelem*iter->elmt_size);
+    iter->u.all.elmt_offset += nelem;
+    iter->u.all.byte_offset += (nelem * iter->elmt_size);
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_all_iter_next() */
+}   /* H5S__all_iter_next() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_all_iter_next_block
+    H5S__all_iter_next_block
  PURPOSE
     Increment selection iterator to next block
  USAGE
-    herr_t H5S_all_iter_next_block(iter)
+    herr_t H5S__all_iter_next_block(iter)
         H5S_sel_iter_t *iter;       IN: Pointer to selection iterator
  RETURNS
     Non-negative on success/Negative on failure
@@ -323,24 +315,24 @@ H5S_all_iter_next(H5S_sel_iter_t *iter, size_t nelem)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_all_iter_next_block(H5S_sel_iter_t H5_ATTR_UNUSED *iter)
+H5S__all_iter_next_block(H5S_sel_iter_t H5_ATTR_UNUSED *iter)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
-    HDassert (iter);
+    HDassert(iter);
 
     FUNC_LEAVE_NOAPI(FAIL)
-}   /* H5S_all_iter_next_block() */
+}   /* H5S__all_iter_next_block() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_all_iter_release
+    H5S__all_iter_release
  PURPOSE
     Release "all" selection iterator information for a dataspace
  USAGE
-    herr_t H5S_all_iter_release(iter)
+    herr_t H5S__all_iter_release(iter)
         H5S_sel_iter_t *iter;       IN: Pointer to selection iterator
  RETURNS
     Non-negative on success/Negative on failure
@@ -352,24 +344,24 @@ H5S_all_iter_next_block(H5S_sel_iter_t H5_ATTR_UNUSED *iter)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_all_iter_release (H5S_sel_iter_t H5_ATTR_UNUSED * iter)
+H5S__all_iter_release(H5S_sel_iter_t H5_ATTR_UNUSED * iter)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
-    HDassert (iter);
+    HDassert(iter);
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_all_iter_release() */
+}   /* H5S__all_iter_release() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_all_release
+    H5S__all_release
  PURPOSE
     Release all selection information for a dataspace
  USAGE
-    herr_t H5S_all_release(space)
+    herr_t H5S__all_release(space)
         H5S_t *space;       IN: Pointer to dataspace
  RETURNS
     Non-negative on success/Negative on failure
@@ -381,9 +373,9 @@ H5S_all_iter_release (H5S_sel_iter_t H5_ATTR_UNUSED * iter)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_all_release(H5S_t *space)
+H5S__all_release(H5S_t *space)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(space);
@@ -392,16 +384,16 @@ H5S_all_release(H5S_t *space)
     space->select.num_elem = 0;
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_all_release() */
+}   /* H5S__all_release() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_all_copy
+    H5S__all_copy
  PURPOSE
     Copy a selection from one dataspace to another
  USAGE
-    herr_t H5S_all_copy(dst, src)
+    herr_t H5S__all_copy(dst, src)
         H5S_t *dst;  OUT: Pointer to the destination dataspace
         H5S_t *src;  IN: Pointer to the source dataspace
  RETURNS
@@ -415,9 +407,9 @@ H5S_all_release(H5S_t *space)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_all_copy(H5S_t *dst, const H5S_t H5_ATTR_UNUSED *src, hbool_t H5_ATTR_UNUSED share_selection)
+H5S__all_copy(H5S_t *dst, const H5S_t H5_ATTR_UNUSED *src, hbool_t H5_ATTR_UNUSED share_selection)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     HDassert(src);
     HDassert(dst);
@@ -426,17 +418,17 @@ H5S_all_copy(H5S_t *dst, const H5S_t H5_ATTR_UNUSED *src, hbool_t H5_ATTR_UNUSED
     dst->select.num_elem = (hsize_t)H5S_GET_EXTENT_NPOINTS(dst);
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-} /* end H5S_all_copy() */
+} /* end H5S__all_copy() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_all_is_valid
+    H5S__all_is_valid
  PURPOSE
     Check whether the selection fits within the extent, with the current
     offset defined.
  USAGE
-    htri_t H5S_all_is_valid(space);
+    htri_t H5S__all_is_valid(space);
         H5S_t *space;             IN: Dataspace pointer to query
  RETURNS
     TRUE if the selection fits within the extent, FALSE if it does not and
@@ -450,24 +442,24 @@ H5S_all_copy(H5S_t *dst, const H5S_t H5_ATTR_UNUSED *src, hbool_t H5_ATTR_UNUSED
  REVISION LOG
 --------------------------------------------------------------------------*/
 static htri_t
-H5S_all_is_valid (const H5S_t H5_ATTR_UNUSED *space)
+H5S__all_is_valid(const H5S_t H5_ATTR_UNUSED *space)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     HDassert(space);
 
     FUNC_LEAVE_NOAPI(TRUE)
-} /* end H5S_all_is_valid() */
+} /* end H5S__all_is_valid() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_all_serial_size
+    H5S__all_serial_size
  PURPOSE
     Determine the number of bytes needed to store the serialized "all"
         selection information.
  USAGE
-    hssize_t H5S_all_serial_size(space)
+    hssize_t H5S__all_serial_size(space)
         H5S_t *space;             IN: Dataspace pointer to query
  RETURNS
     The number of bytes required on success, negative on an error.
@@ -480,9 +472,9 @@ H5S_all_is_valid (const H5S_t H5_ATTR_UNUSED *space)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static hssize_t
-H5S_all_serial_size (const H5S_t H5_ATTR_UNUSED *space)
+H5S__all_serial_size(const H5S_t H5_ATTR_UNUSED *space)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     HDassert(space);
 
@@ -491,12 +483,12 @@ H5S_all_serial_size (const H5S_t H5_ATTR_UNUSED *space)
      *      <length (4 bytes)> = 16 bytes
      */
     FUNC_LEAVE_NOAPI(16)
-} /* end H5S_all_serial_size() */
+} /* end H5S__all_serial_size() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_all_serialize
+    H5S__all_serialize
  PURPOSE
     Serialize the current selection into a user-provided buffer.
  USAGE
@@ -516,11 +508,11 @@ H5S_all_serial_size (const H5S_t H5_ATTR_UNUSED *space)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_all_serialize(const H5S_t *space, uint8_t **p)
+H5S__all_serialize(const H5S_t *space, uint8_t **p)
 {
     uint8_t *pp = (*p);         /* Local pointer for decoding */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(space);
@@ -537,12 +529,12 @@ H5S_all_serialize(const H5S_t *space, uint8_t **p)
     *p = pp;
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_all_serialize() */
+}   /* H5S__all_serialize() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_all_deserialize
+    H5S__all_deserialize
  PURPOSE
     Deserialize the current selection from a user-provided buffer.
  USAGE
@@ -565,12 +557,12 @@ H5S_all_serialize(const H5S_t *space, uint8_t **p)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_all_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t H5_ATTR_UNUSED flags,
+H5S__all_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t H5_ATTR_UNUSED flags,
         const uint8_t H5_ATTR_UNUSED **p)
 {
     herr_t ret_value = SUCCEED;   /* return value */
 
-    FUNC_ENTER_NOAPI(FAIL)
+    FUNC_ENTER_STATIC
 
     HDassert(space);
     HDassert(p);
@@ -582,16 +574,16 @@ H5S_all_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t H5_AT
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_all_deserialize() */
+}   /* H5S__all_deserialize() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_all_bounds
+    H5S__all_bounds
  PURPOSE
     Gets the bounding box containing the selection.
  USAGE
-    herr_t H5S_all_bounds(space, start, end)
+    herr_t H5S__all_bounds(space, start, end)
         H5S_t *space;           IN: Dataspace pointer of selection to query
         hsize_t *start;         OUT: Starting coordinate of bounding box
         hsize_t *end;           OUT: Opposite coordinate of bounding box
@@ -611,12 +603,12 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_all_bounds(const H5S_t *space, hsize_t *start, hsize_t *end)
+H5S__all_bounds(const H5S_t *space, hsize_t *start, hsize_t *end)
 {
     unsigned rank;                  /* Dataspace rank */
     unsigned i;                     /* index variable */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     HDassert(space);
     HDassert(start);
@@ -632,16 +624,16 @@ H5S_all_bounds(const H5S_t *space, hsize_t *start, hsize_t *end)
     } /* end for */
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_all_bounds() */
+}   /* H5S__all_bounds() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_all_offset
+    H5S__all_offset
  PURPOSE
     Gets the linear offset of the first element for the selection.
  USAGE
-    herr_t H5S_all_offset(space, offset)
+    herr_t H5S__all_offset(space, offset)
         const H5S_t *space;     IN: Dataspace pointer of selection to query
         hsize_t *offset;        OUT: Linear offset of first element in selection
  RETURNS
@@ -656,9 +648,9 @@ H5S_all_bounds(const H5S_t *space, hsize_t *start, hsize_t *end)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_all_offset(const H5S_t H5_ATTR_UNUSED *space, hsize_t *offset)
+H5S__all_offset(const H5S_t H5_ATTR_UNUSED *space, hsize_t *offset)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     HDassert(space);
     HDassert(offset);
@@ -667,7 +659,7 @@ H5S_all_offset(const H5S_t H5_ATTR_UNUSED *space, hsize_t *offset)
     *offset = 0;
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_all_offset() */
+}   /* H5S__all_offset() */
 
 
 /*--------------------------------------------------------------------------
@@ -702,11 +694,11 @@ H5S__all_unlim_dim(const H5S_t H5_ATTR_UNUSED *space)
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_all_is_contiguous
+    H5S__all_is_contiguous
  PURPOSE
     Check if a "all" selection is contiguous within the dataspace extent.
  USAGE
-    htri_t H5S_all_is_contiguous(space)
+    htri_t H5S__all_is_contiguous(space)
         H5S_t *space;           IN: Dataspace pointer to check
  RETURNS
     TRUE/FALSE/FAIL
@@ -719,23 +711,23 @@ H5S__all_unlim_dim(const H5S_t H5_ATTR_UNUSED *space)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static htri_t
-H5S_all_is_contiguous(const H5S_t H5_ATTR_UNUSED *space)
+H5S__all_is_contiguous(const H5S_t H5_ATTR_UNUSED *space)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     HDassert(space);
 
     FUNC_LEAVE_NOAPI(TRUE)
-}   /* H5S_all_is_contiguous() */
+}   /* H5S__all_is_contiguous() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_all_is_single
+    H5S__all_is_single
  PURPOSE
     Check if a "all" selection is a single block within the dataspace extent.
  USAGE
-    htri_t H5S_all_is_single(space)
+    htri_t H5S__all_is_single(space)
         H5S_t *space;           IN: Dataspace pointer to check
  RETURNS
     TRUE/FALSE/FAIL
@@ -748,23 +740,23 @@ H5S_all_is_contiguous(const H5S_t H5_ATTR_UNUSED *space)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static htri_t
-H5S_all_is_single(const H5S_t H5_ATTR_UNUSED *space)
+H5S__all_is_single(const H5S_t H5_ATTR_UNUSED *space)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     HDassert(space);
 
     FUNC_LEAVE_NOAPI(TRUE)
-}   /* H5S_all_is_single() */
+}   /* H5S__all_is_single() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_all_is_regular
+    H5S__all_is_regular
  PURPOSE
     Check if a "all" selection is "regular"
  USAGE
-    htri_t H5S_all_is_regular(space)
+    htri_t H5S__all_is_regular(space)
         const H5S_t *space;     IN: Dataspace pointer to check
  RETURNS
     TRUE/FALSE/FAIL
@@ -778,28 +770,28 @@ H5S_all_is_single(const H5S_t H5_ATTR_UNUSED *space)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static htri_t
-H5S_all_is_regular(const H5S_t H5_ATTR_UNUSED *space)
+H5S__all_is_regular(const H5S_t H5_ATTR_UNUSED *space)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(space);
 
     FUNC_LEAVE_NOAPI(TRUE)
-}   /* H5S_all_is_regular() */
+}   /* H5S__all_is_regular() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_all_adjust_u
+    H5S__all_adjust_u
  PURPOSE
     Adjust an "all" selection by subtracting an offset
  USAGE
-    herr_t H5S_all_adjust_u(space, offset)
+    void H5S__all_adjust_u(space, offset)
         H5S_t *space;           IN/OUT: Pointer to dataspace to adjust
         const hsize_t *offset; IN: Offset to subtract
  RETURNS
-    Non-negative on success, negative on failure
+    None
  DESCRIPTION
     Moves selection by subtracting an offset from it.
  GLOBAL VARIABLES
@@ -807,21 +799,21 @@ H5S_all_is_regular(const H5S_t H5_ATTR_UNUSED *space)
  EXAMPLES
  REVISION LOG
 --------------------------------------------------------------------------*/
-static herr_t
-H5S_all_adjust_u(H5S_t H5_ATTR_UNUSED *space, const hsize_t H5_ATTR_UNUSED *offset)
+static void
+H5S__all_adjust_u(H5S_t H5_ATTR_UNUSED *space, const hsize_t H5_ATTR_UNUSED *offset)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(space);
     HDassert(offset);
 
-    FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_all_adjust_u() */
+    FUNC_LEAVE_NOAPI_VOID
+}   /* H5S__all_adjust_u() */
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5S_all_project_scalar
+ * Function:	H5S__all_project_scalar
  *
  * Purpose:	Projects a single element 'all' selection into a scalar
  *              dataspace
@@ -834,9 +826,9 @@ H5S_all_adjust_u(H5S_t H5_ATTR_UNUSED *space, const hsize_t H5_ATTR_UNUSED *offs
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5S_all_project_scalar(const H5S_t H5_ATTR_UNUSED *space, hsize_t *offset)
+H5S__all_project_scalar(const H5S_t H5_ATTR_UNUSED *space, hsize_t *offset)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(space && H5S_SEL_ALL == H5S_GET_SELECT_TYPE(space));
@@ -846,11 +838,11 @@ H5S_all_project_scalar(const H5S_t H5_ATTR_UNUSED *space, hsize_t *offset)
     *offset = 0;
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_all_project_scalar() */
+}   /* H5S__all_project_scalar() */
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5S_all_project_simple
+ * Function:	H5S__all_project_simple
  *
  * Purpose:	Projects an 'all' selection onto/into a simple dataspace
  *              of a different rank
@@ -863,11 +855,11 @@ H5S_all_project_scalar(const H5S_t H5_ATTR_UNUSED *space, hsize_t *offset)
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5S_all_project_simple(const H5S_t *base_space, H5S_t *new_space, hsize_t *offset)
+H5S__all_project_simple(const H5S_t *base_space, H5S_t *new_space, hsize_t *offset)
 {
     herr_t ret_value = SUCCEED;         /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC
 
     /* Check args */
     HDassert(base_space && H5S_SEL_ALL == H5S_GET_SELECT_TYPE(base_space));
@@ -880,7 +872,7 @@ H5S_all_project_simple(const H5S_t *base_space, H5S_t *new_space, hsize_t *offse
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_all_project_simple() */
+}   /* H5S__all_project_simple() */
 
 
 /*--------------------------------------------------------------------------
@@ -955,7 +947,7 @@ H5Sselect_all(hid_t spaceid)
 
     /* Check args */
     if(NULL == (space = (H5S_t *)H5I_object_verify(spaceid, H5I_DATASPACE)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
 
     /* Call internal routine to do the work */
     if(H5S_select_all(space, TRUE) < 0)
@@ -968,11 +960,11 @@ done:
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_all_get_seq_list
+    H5S__all_get_seq_list
  PURPOSE
     Create a list of offsets & lengths for a selection
  USAGE
-    herr_t H5S_all_get_seq_list(space,flags,iter,maxseq,maxelem,nseq,nelem,off,len)
+    herr_t H5S__all_get_seq_list(space,flags,iter,maxseq,maxelem,nseq,nelem,off,len)
         H5S_t *space;           IN: Dataspace containing selection to use.
         unsigned flags;         IN: Flags for extra information about operation
         H5S_sel_iter_t *iter;   IN/OUT: Selection iterator describing last
@@ -998,44 +990,44 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_all_get_seq_list(const H5S_t H5_ATTR_UNUSED *space, unsigned H5_ATTR_UNUSED flags, H5S_sel_iter_t *iter,
+H5S__all_get_seq_list(const H5S_t H5_ATTR_UNUSED *space, unsigned H5_ATTR_UNUSED flags, H5S_sel_iter_t *iter,
     size_t H5_ATTR_UNUSED maxseq, size_t maxelem, size_t *nseq, size_t *nelem,
     hsize_t *off, size_t *len)
 {
     size_t elem_used;           /* The number of elements used */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(space);
     HDassert(iter);
-    HDassert(maxseq>0);
-    HDassert(maxelem>0);
+    HDassert(maxseq > 0);
+    HDassert(maxelem > 0);
     HDassert(nseq);
     HDassert(nelem);
     HDassert(off);
     HDassert(len);
 
     /* Determine the actual number of elements to use */
-    H5_CHECK_OVERFLOW(iter->elmt_left,hsize_t,size_t);
-    elem_used=MIN(maxelem,(size_t)iter->elmt_left);
+    H5_CHECK_OVERFLOW(iter->elmt_left, hsize_t, size_t);
+    elem_used = MIN(maxelem, (size_t)iter->elmt_left);
     HDassert(elem_used > 0);
 
     /* Compute the offset in the dataset */
-    off[0]=iter->u.all.byte_offset;
-    len[0]=elem_used*iter->elmt_size;
+    off[0] = iter->u.all.byte_offset;
+    len[0] = elem_used * iter->elmt_size;
 
     /* Should only need one sequence for 'all' selections */
-    *nseq=1;
+    *nseq = 1;
 
     /* Set the number of elements used */
-    *nelem=elem_used;
+    *nelem = elem_used;
 
     /* Update the iterator */
-    iter->elmt_left-=elem_used;
-    iter->u.all.elmt_offset+=elem_used;
-    iter->u.all.byte_offset+=len[0];
+    iter->elmt_left -= elem_used;
+    iter->u.all.elmt_offset += elem_used;
+    iter->u.all.byte_offset += len[0];
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-} /* end H5S_all_get_seq_list() */
+} /* end H5S__all_get_seq_list() */
 
diff --git a/src/H5Sdbg.c b/src/H5Sdbg.c
index b69604c..6548ffe 100644
--- a/src/H5Sdbg.c
+++ b/src/H5Sdbg.c
@@ -78,7 +78,7 @@
 /*-------------------------------------------------------------------------
  * Function:	H5S_debug
  *
- * Purpose:	Prints debugging information about a data space.
+ * Purpose:	Prints debugging information about a dataspace.
  *
  * Return:	Non-negative on success/Negative on failure
  *
diff --git a/src/H5Shyper.c b/src/H5Shyper.c
index 5231c6e..4fa773f 100644
--- a/src/H5Shyper.c
+++ b/src/H5Shyper.c
@@ -17,7 +17,7 @@
  * Programmer:  Quincey Koziol <koziol@ncsa.uiuc.edu>
  *              Thursday, June 18, 1998
  *
- * Purpose:	Hyperslab selection data space I/O functions.
+ * Purpose:	Hyperslab selection dataspace I/O functions.
  */
 
 #include "H5Smodule.h"          /* This source code file is part of the H5S module */
@@ -30,17 +30,42 @@
 #include "H5Spkg.h"		/* Dataspace functions			*/
 #include "H5VMprivate.h"         /* Vector functions			*/
 
+/* Local Macros */
+
 /* Local datatypes */
 
 /* Static function prototypes */
-static herr_t H5S_hyper_free_span_info(H5S_hyper_span_info_t *span_info);
-static herr_t H5S_hyper_free_span(H5S_hyper_span_t *span);
-static H5S_hyper_span_info_t *H5S_hyper_copy_span(H5S_hyper_span_info_t *spans);
-static void H5S_hyper_span_scratch(H5S_hyper_span_info_t *spans, void *scr_value);
-static herr_t H5S_hyper_span_precompute(H5S_hyper_span_info_t *spans, size_t elmt_size);
-static herr_t H5S_generate_hyperslab(H5S_t *space, H5S_seloper_t op,
-    const hsize_t start[], const hsize_t stride[], const hsize_t count[], const hsize_t block[]);
-static herr_t H5S_hyper_generate_spans(H5S_t *space);
+static H5S_hyper_span_t *H5S__hyper_new_span(hsize_t low, hsize_t high,
+    H5S_hyper_span_info_t *down, H5S_hyper_span_t *next);
+static herr_t H5S__hyper_span_precompute(H5S_hyper_span_info_t *spans, size_t elmt_size);
+static void H5S__hyper_span_scratch(H5S_hyper_span_info_t *spans);
+static H5S_hyper_span_info_t *H5S__hyper_copy_span(H5S_hyper_span_info_t *spans);
+static hbool_t H5S__hyper_cmp_spans(const H5S_hyper_span_info_t *span_info1,
+    const H5S_hyper_span_info_t *span_info2);
+static herr_t H5S__hyper_free_span_info(H5S_hyper_span_info_t *span_info);
+static herr_t H5S__hyper_free_span(H5S_hyper_span_t *span);
+static hbool_t H5S__hyper_is_valid_helper(const H5S_hyper_span_info_t *spans,
+    const hssize_t *offset, const hsize_t *size);
+static herr_t H5S__hyper_recover_span(hbool_t *recover,
+    H5S_hyper_span_t **curr_span, H5S_hyper_span_t *next_span);
+static H5S_hyper_span_t *H5S__hyper_coord_to_span(unsigned rank,
+    const hsize_t *coords);
+static herr_t H5S__hyper_append_span(H5S_hyper_span_t **prev_span,
+    H5S_hyper_span_info_t **span_tree, hsize_t low, hsize_t high,
+    H5S_hyper_span_info_t *down, H5S_hyper_span_t *next);
+static herr_t H5S__hyper_clip_spans(H5S_hyper_span_info_t *a_spans,
+    H5S_hyper_span_info_t *b_spans, H5S_hyper_span_info_t **a_not_b,
+    H5S_hyper_span_info_t **a_and_b, H5S_hyper_span_info_t **b_not_a);
+static herr_t H5S__hyper_merge_spans(H5S_t *space,
+    H5S_hyper_span_info_t *new_spans, hbool_t can_own);
+static hsize_t H5S__hyper_spans_nelem(const H5S_hyper_span_info_t *spans);
+static H5S_hyper_span_info_t *H5S__hyper_make_spans(unsigned rank,
+    const hsize_t *start, const hsize_t *stride, const hsize_t *count,
+    const hsize_t *block);
+static herr_t H5S__hyper_generate_spans(H5S_t *space);
+static herr_t H5S__generate_hyperslab(H5S_t *space, H5S_seloper_t op,
+    const hsize_t start[], const hsize_t stride[], const hsize_t count[],
+    const hsize_t block[]);
 /* Needed for use in hyperslab code (H5Shyper.c) */
 #ifdef NEW_HYPERSLAB_API
 static herr_t H5S_select_select (H5S_t *space1, H5S_seloper_t op, H5S_t *space2);
@@ -51,66 +76,66 @@ static hsize_t H5S__hyper_get_clip_extent_real(const H5S_t *clip_space,
     hsize_t num_slices, hbool_t incl_trail);
 
 /* Selection callbacks */
-static herr_t H5S_hyper_copy(H5S_t *dst, const H5S_t *src, hbool_t share_selection);
-static herr_t H5S_hyper_get_seq_list(const H5S_t *space, unsigned flags,
+static herr_t H5S__hyper_copy(H5S_t *dst, const H5S_t *src, hbool_t share_selection);
+static herr_t H5S__hyper_get_seq_list(const H5S_t *space, unsigned flags,
     H5S_sel_iter_t *iter, size_t maxseq, size_t maxbytes,
     size_t *nseq, size_t *nbytes, hsize_t *off, size_t *len);
-static herr_t H5S_hyper_release(H5S_t *space);
-static htri_t H5S_hyper_is_valid(const H5S_t *space);
-static hssize_t H5S_hyper_serial_size(const H5S_t *space);
-static herr_t H5S_hyper_serialize(const H5S_t *space, uint8_t **p);
-static herr_t H5S_hyper_deserialize(H5S_t *space, uint32_t version, uint8_t flags,
+static herr_t H5S__hyper_release(H5S_t *space);
+static htri_t H5S__hyper_is_valid(const H5S_t *space);
+static hssize_t H5S__hyper_serial_size(const H5S_t *space);
+static herr_t H5S__hyper_serialize(const H5S_t *space, uint8_t **p);
+static herr_t H5S__hyper_deserialize(H5S_t *space, uint32_t version, uint8_t flags,
     const uint8_t **p);
-static herr_t H5S_hyper_bounds(const H5S_t *space, hsize_t *start, hsize_t *end);
-static herr_t H5S_hyper_offset(const H5S_t *space, hsize_t *offset);
+static herr_t H5S__hyper_bounds(const H5S_t *space, hsize_t *start, hsize_t *end);
+static herr_t H5S__hyper_offset(const H5S_t *space, hsize_t *offset);
 static int H5S__hyper_unlim_dim(const H5S_t *space);
-static herr_t H5S_hyper_num_elem_non_unlim(const H5S_t *space,
+static herr_t H5S__hyper_num_elem_non_unlim(const H5S_t *space,
     hsize_t *num_elem_non_unlim);
-static htri_t H5S_hyper_is_contiguous(const H5S_t *space);
-static htri_t H5S_hyper_is_single(const H5S_t *space);
-static htri_t H5S_hyper_is_regular(const H5S_t *space);
-static herr_t H5S_hyper_adjust_u(H5S_t *space, const hsize_t *offset);
-static herr_t H5S_hyper_project_scalar(const H5S_t *space, hsize_t *offset);
-static herr_t H5S_hyper_project_simple(const H5S_t *space, H5S_t *new_space, hsize_t *offset);
-static herr_t H5S_hyper_iter_init(H5S_sel_iter_t *iter, const H5S_t *space);
+static htri_t H5S__hyper_is_contiguous(const H5S_t *space);
+static htri_t H5S__hyper_is_single(const H5S_t *space);
+static htri_t H5S__hyper_is_regular(const H5S_t *space);
+static void H5S__hyper_adjust_u(H5S_t *space, const hsize_t *offset);
+static herr_t H5S__hyper_project_scalar(const H5S_t *space, hsize_t *offset);
+static herr_t H5S__hyper_project_simple(const H5S_t *space, H5S_t *new_space, hsize_t *offset);
+static herr_t H5S__hyper_iter_init(H5S_sel_iter_t *iter, const H5S_t *space);
 
 /* Selection iteration callbacks */
-static herr_t H5S_hyper_iter_coords(const H5S_sel_iter_t *iter, hsize_t *coords);
-static herr_t H5S_hyper_iter_block(const H5S_sel_iter_t *iter, hsize_t *start, hsize_t *end);
-static hsize_t H5S_hyper_iter_nelmts(const H5S_sel_iter_t *iter);
-static htri_t H5S_hyper_iter_has_next_block(const H5S_sel_iter_t *sel_iter);
-static herr_t H5S_hyper_iter_next(H5S_sel_iter_t *sel_iter, size_t nelem);
-static herr_t H5S_hyper_iter_next_block(H5S_sel_iter_t *sel_iter);
-static herr_t H5S_hyper_iter_release(H5S_sel_iter_t *sel_iter);
+static herr_t H5S__hyper_iter_coords(const H5S_sel_iter_t *iter, hsize_t *coords);
+static herr_t H5S__hyper_iter_block(const H5S_sel_iter_t *iter, hsize_t *start, hsize_t *end);
+static hsize_t H5S__hyper_iter_nelmts(const H5S_sel_iter_t *iter);
+static htri_t H5S__hyper_iter_has_next_block(const H5S_sel_iter_t *sel_iter);
+static herr_t H5S__hyper_iter_next(H5S_sel_iter_t *sel_iter, size_t nelem);
+static herr_t H5S__hyper_iter_next_block(H5S_sel_iter_t *sel_iter);
+static herr_t H5S__hyper_iter_release(H5S_sel_iter_t *sel_iter);
 
 /* Static function for optimizing hyperslab */
-static hbool_t H5S_hyper_rebuild_helper(const H5S_hyper_span_t *span,
+static hbool_t H5S__hyper_rebuild_helper(const H5S_hyper_span_t *span,
     H5S_hyper_dim_t span_slab_info[], unsigned rank);
-static htri_t H5S_hyper_rebuild(H5S_t *space);
+static hbool_t H5S__hyper_rebuild(H5S_t *space);
 
 /* Selection properties for hyperslab selections */
 const H5S_select_class_t H5S_sel_hyper[1] = {{
     H5S_SEL_HYPERSLABS,
 
     /* Methods on selection */
-    H5S_hyper_copy,
-    H5S_hyper_get_seq_list,
-    H5S_hyper_release,
-    H5S_hyper_is_valid,
-    H5S_hyper_serial_size,
-    H5S_hyper_serialize,
-    H5S_hyper_deserialize,
-    H5S_hyper_bounds,
-    H5S_hyper_offset,
+    H5S__hyper_copy,
+    H5S__hyper_get_seq_list,
+    H5S__hyper_release,
+    H5S__hyper_is_valid,
+    H5S__hyper_serial_size,
+    H5S__hyper_serialize,
+    H5S__hyper_deserialize,
+    H5S__hyper_bounds,
+    H5S__hyper_offset,
     H5S__hyper_unlim_dim,
-    H5S_hyper_num_elem_non_unlim,
-    H5S_hyper_is_contiguous,
-    H5S_hyper_is_single,
-    H5S_hyper_is_regular,
-    H5S_hyper_adjust_u,
-    H5S_hyper_project_scalar,
-    H5S_hyper_project_simple,
-    H5S_hyper_iter_init,
+    H5S__hyper_num_elem_non_unlim,
+    H5S__hyper_is_contiguous,
+    H5S__hyper_is_single,
+    H5S__hyper_is_regular,
+    H5S__hyper_adjust_u,
+    H5S__hyper_project_scalar,
+    H5S__hyper_project_simple,
+    H5S__hyper_iter_init,
 }};
 
 /* Iteration properties for hyperslab selections */
@@ -118,19 +143,24 @@ static const H5S_sel_iter_class_t H5S_sel_iter_hyper[1] = {{
     H5S_SEL_HYPERSLABS,
 
     /* Methods on selection iterator */
-    H5S_hyper_iter_coords,
-    H5S_hyper_iter_block,
-    H5S_hyper_iter_nelmts,
-    H5S_hyper_iter_has_next_block,
-    H5S_hyper_iter_next,
-    H5S_hyper_iter_next_block,
-    H5S_hyper_iter_release,
+    H5S__hyper_iter_coords,
+    H5S__hyper_iter_block,
+    H5S__hyper_iter_nelmts,
+    H5S__hyper_iter_has_next_block,
+    H5S__hyper_iter_next,
+    H5S__hyper_iter_next_block,
+    H5S__hyper_iter_release,
 }};
 
 /* Static variables */
 
-/* Array for default stride, block, etc. */
-static const hsize_t _ones[H5O_LAYOUT_NDIMS]={
+/* Arrays for default stride, block, etc. */
+static const hsize_t H5S_hyper_zeros_g[H5O_LAYOUT_NDIMS] = {
+    0,0,0,0, 0,0,0,0,
+    0,0,0,0, 0,0,0,0,
+    0,0,0,0, 0,0,0,0,
+    0,0,0,0, 0,0,0,0,0};
+static const hsize_t H5S_hyper_ones_g[H5O_LAYOUT_NDIMS] = {
     1,1,1,1, 1,1,1,1,
     1,1,1,1, 1,1,1,1,
     1,1,1,1, 1,1,1,1,
@@ -151,79 +181,79 @@ H5FL_EXTERN(H5S_sel_iter_t);
 /* #define H5S_HYPER_DEBUG */
 #ifdef H5S_HYPER_DEBUG
 static herr_t
-H5S_hyper_print_spans_helper(FILE *f, struct H5S_hyper_span_t *span,unsigned depth)
+H5S__hyper_print_spans_helper(FILE *f, const H5S_hyper_span_t *span, unsigned depth)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     while(span) {
-        HDfprintf(f,"%s: depth=%u, span=%p, (%d, %d), nelem=%u, pstride=%u\n",FUNC,depth,span,(int)span->low,(int)span->high,(unsigned)span->nelem,(unsigned)span->pstride);
+        HDfprintf(f,"%s: depth=%u, span=%p, (%Hu, %Hu), nelem=%Hu, pstride=%Hu\n", FUNC, depth, span, span->low, span->high, span->nelem, span->pstride);
         if(span->down && span->down->head) {
-            HDfprintf(f,"%s: spans=%p, count=%u, scratch=%p, head=%p\n",FUNC,span->down,span->down->count,span->down->scratch,span->down->head);
-            H5S_hyper_print_spans_helper(f,span->down->head,depth+1);
+            HDfprintf(f,"%s: spans=%p, count=%u, scratch=%p, head=%p\n", FUNC, span->down, span->down->count, span->down->scratch, span->down->head);
+            H5S__hyper_print_spans_helper(f, span->down->head, depth + 1);
         } /* end if */
-        span=span->next;
+        span = span->next;
     } /* end while */
 
     FUNC_LEAVE_NOAPI(SUCCEED)
 }
 
-herr_t
-H5S_hyper_print_spans(FILE *f, const struct H5S_hyper_span_info_t *span_lst)
+static herr_t
+H5S__hyper_print_spans(FILE *f, const H5S_hyper_span_info_t *span_lst)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
-    if(span_lst!=NULL) {
-        HDfprintf(f,"%s: spans=%p, count=%u, scratch=%p, head=%p\n",FUNC,span_lst,span_lst->count,span_lst->scratch,span_lst->head);
-        H5S_hyper_print_spans_helper(f,span_lst->head,0);
+    if(span_lst != NULL) {
+        HDfprintf(f, "%s: spans=%p, count=%u, scratch=%p, head=%p\n", FUNC, span_lst, span_lst->count, span_lst->scratch, span_lst->head);
+        H5S__hyper_print_spans_helper(f, span_lst->head, 0);
     } /* end if */
 
     FUNC_LEAVE_NOAPI(SUCCEED)
 }
 
-herr_t
-H5S_space_print_spans(FILE *f, const H5S_t *space)
+static herr_t
+H5S__space_print_spans(FILE *f, const H5S_t *space)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
-    H5S_hyper_print_spans(f,space->select.sel_info.hslab->span_lst);
+    H5S__hyper_print_spans(f, space->select.sel_info.hslab->span_lst);
 
     FUNC_LEAVE_NOAPI(SUCCEED)
 }
 
 static herr_t
-H5S_hyper_print_diminfo_helper(FILE *f, const char *field, unsigned ndims, const H5S_hyper_dim_t *dinfo)
+H5S__hyper_print_diminfo_helper(FILE *f, const char *field, unsigned ndims, const H5S_hyper_dim_t *dinfo)
 {
     unsigned u;                 /* Local index variable */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
-    if(dinfo!=NULL) {
-        HDfprintf(f,"%s: %s: start=[",FUNC,field);
-        for(u=0; u<ndims; u++)
-            HDfprintf(f,"%Hd%s",dinfo[u].start, (u<(ndims-1) ? ", " : "]\n"));
-        HDfprintf(f,"%s: %s: stride=[",FUNC,field);
-        for(u=0; u<ndims; u++)
-            HDfprintf(f,"%Hu%s",dinfo[u].stride, (u<(ndims-1) ? ", " : "]\n"));
-        HDfprintf(f,"%s: %s: count=[",FUNC,field);
-        for(u=0; u<ndims; u++)
-            HDfprintf(f,"%Hu%s",dinfo[u].count, (u<(ndims-1) ? ", " : "]\n"));
-        HDfprintf(f,"%s: %s: block=[",FUNC,field);
-        for(u=0; u<ndims; u++)
-            HDfprintf(f,"%Hu%s",dinfo[u].block, (u<(ndims-1) ? ", " : "]\n"));
+    if(dinfo != NULL) {
+        HDfprintf(f, "%s: %s: start=[", FUNC, field);
+        for(u = 0; u < ndims; u++)
+            HDfprintf(f, "%Hd%s", dinfo[u].start, (u < (ndims - 1) ? ", " : "]\n"));
+        HDfprintf(f, "%s: %s: stride=[", FUNC, field);
+        for(u = 0; u < ndims; u++)
+            HDfprintf(f, "%Hu%s", dinfo[u].stride, (u < (ndims - 1) ? ", " : "]\n"));
+        HDfprintf(f, "%s: %s: count=[", FUNC, field);
+        for(u = 0; u < ndims; u++)
+            HDfprintf(f, "%Hu%s", dinfo[u].count, (u < (ndims - 1) ? ", " : "]\n"));
+        HDfprintf(f, "%s: %s: block=[", FUNC, field);
+        for(u = 0; u < ndims; u++)
+            HDfprintf(f, "%Hu%s", dinfo[u].block, (u < (ndims - 1) ? ", " : "]\n"));
     } /* end if */
     else
-        HDfprintf(f,"%s: %s==NULL\n",FUNC,field);
+        HDfprintf(f, "%s: %s==NULL\n", FUNC, field);
 
     FUNC_LEAVE_NOAPI(SUCCEED)
 }
 
-herr_t
-H5S_hyper_print_diminfo(FILE *f, const H5S_t *space)
+static herr_t
+H5S__hyper_print_diminfo(FILE *f, const H5S_t *space)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
-    H5S_hyper_print_diminfo_helper(f,"opt_diminfo",space->extent.rank,space->select.sel_info.hslab->opt_diminfo);
-    H5S_hyper_print_diminfo_helper(f,"app_diminfo",space->extent.rank,space->select.sel_info.hslab->app_diminfo);
+    H5S__hyper_print_diminfo_helper(f, "opt_diminfo", space->extent.rank, space->select.sel_info.hslab->opt_diminfo);
+    H5S__hyper_print_diminfo_helper(f, "app_diminfo", space->extent.rank, space->select.sel_info.hslab->app_diminfo);
 
     FUNC_LEAVE_NOAPI(SUCCEED)
 }
@@ -231,7 +261,7 @@ H5S_hyper_print_diminfo(FILE *f, const H5S_t *space)
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5S_hyper_iter_init
+ * Function:	H5S__hyper_iter_init
  *
  * Purpose:	Initializes iteration information for hyperslab span tree selection.
  *
@@ -248,7 +278,7 @@ H5S_hyper_print_diminfo(FILE *f, const H5S_t *space)
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5S_hyper_iter_init(H5S_sel_iter_t *iter, const H5S_t *space)
+H5S__hyper_iter_init(H5S_sel_iter_t *iter, const H5S_t *space)
 {
     const H5S_hyper_dim_t *tdiminfo;    /* Temporary pointer to diminfo information */
     H5S_hyper_span_info_t *spans;   /* Pointer to hyperslab span info node */
@@ -256,7 +286,7 @@ H5S_hyper_iter_init(H5S_sel_iter_t *iter, const H5S_t *space)
     unsigned u;                     /* Index variable */
     int i;                          /* Index variable */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(space && H5S_SEL_HYPERSLABS == H5S_GET_SELECT_TYPE(space));
@@ -391,10 +421,10 @@ H5S_hyper_iter_init(H5S_sel_iter_t *iter, const H5S_t *space)
 /* Initialize the information needed for non-regular hyperslab I/O */
         HDassert(space->select.sel_info.hslab->span_lst);
         /* Make a copy of the span tree to iterate over */
-        iter->u.hyp.spans = H5S_hyper_copy_span(space->select.sel_info.hslab->span_lst);
+        iter->u.hyp.spans = H5S__hyper_copy_span(space->select.sel_info.hslab->span_lst);
 
         /* Set the nelem & pstride values according to the element size */
-        H5S_hyper_span_precompute(iter->u.hyp.spans,iter->elmt_size);
+        H5S__hyper_span_precompute(iter->u.hyp.spans, iter->elmt_size);
 
         /* Initialize the starting span_info's and spans */
         spans = iter->u.hyp.spans;
@@ -421,11 +451,11 @@ H5S_hyper_iter_init(H5S_sel_iter_t *iter, const H5S_t *space)
     iter->type = H5S_sel_iter_hyper;
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_hyper_iter_init() */
+} /* end H5S__hyper_iter_init() */
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5S_hyper_iter_coords
+ * Function:	H5S__hyper_iter_coords
  *
  * Purpose:	Retrieve the current coordinates of iterator for current
  *              selection
@@ -435,14 +465,12 @@ H5S_hyper_iter_init(H5S_sel_iter_t *iter, const H5S_t *space)
  * Programmer:	Quincey Koziol
  *              Tuesday, April 22, 2003
  *
- * Modifications:
- *
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5S_hyper_iter_coords (const H5S_sel_iter_t *iter, hsize_t *coords)
+H5S__hyper_iter_coords(const H5S_sel_iter_t *iter, hsize_t *coords)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(iter);
@@ -508,11 +536,11 @@ H5S_hyper_iter_coords (const H5S_sel_iter_t *iter, hsize_t *coords)
         HDmemcpy(coords, iter->u.hyp.off, sizeof(hsize_t) * iter->rank);
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_hyper_iter_coords() */
+} /* end H5S__hyper_iter_coords() */
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5S_hyper_iter_block
+ * Function:	H5S__hyper_iter_block
  *
  * Purpose:	Retrieve the current block of iterator for current
  *              selection
@@ -525,16 +553,14 @@ H5S_hyper_iter_coords (const H5S_sel_iter_t *iter, hsize_t *coords)
  * Notes:       This routine assumes that the iterator is always located at
  *              the beginning of a block.
  *
- * Modifications:
- *
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5S_hyper_iter_block (const H5S_sel_iter_t *iter, hsize_t *start, hsize_t *end)
+H5S__hyper_iter_block(const H5S_sel_iter_t *iter, hsize_t *start, hsize_t *end)
 {
     unsigned u;                 /* Local index variable */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(iter);
@@ -546,27 +572,27 @@ H5S_hyper_iter_block (const H5S_sel_iter_t *iter, hsize_t *start, hsize_t *end)
     /* Check for a single "regular" hyperslab */
     if(iter->u.hyp.diminfo_valid) {
         /* Compute the end of the block */
-        for(u=0; u<iter->rank; u++) {
-            start[u]=iter->u.hyp.off[u];
-            end[u]=(start[u]+iter->u.hyp.diminfo[u].block)-1;
+        for(u = 0; u < iter->rank; u++) {
+            start[u] = iter->u.hyp.off[u];
+            end[u] = (start[u] + iter->u.hyp.diminfo[u].block) - 1;
         } /* end for */
     } /* end if */
     else {
         /* Copy the start of the block */
-        for(u=0; u<iter->rank; u++)
-            start[u]=iter->u.hyp.span[u]->low;
+        for(u = 0; u < iter->rank; u++)
+            start[u] = iter->u.hyp.span[u]->low;
 
         /* Copy the end of the block */
-        for(u=0; u<iter->rank; u++)
-            end[u]=iter->u.hyp.span[u]->high;
+        for(u = 0; u < iter->rank; u++)
+            end[u] = iter->u.hyp.span[u]->high;
     } /* end else */
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_hyper_iter_block() */
+} /* end H5S__hyper_iter_block() */
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5S_hyper_iter_nelmts
+ * Function:	H5S__hyper_iter_nelmts
  *
  * Purpose:	Return number of elements left to process in iterator
  *
@@ -575,29 +601,27 @@ H5S_hyper_iter_block (const H5S_sel_iter_t *iter, hsize_t *start, hsize_t *end)
  * Programmer:	Quincey Koziol
  *              Tuesday, June 16, 1998
  *
- * Modifications:
- *
  *-------------------------------------------------------------------------
  */
 static hsize_t
-H5S_hyper_iter_nelmts (const H5S_sel_iter_t *iter)
+H5S__hyper_iter_nelmts(const H5S_sel_iter_t *iter)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(iter);
 
     FUNC_LEAVE_NOAPI(iter->elmt_left)
-}   /* H5S_hyper_iter_nelmts() */
+} /* end H5S__hyper_iter_nelmts() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_iter_has_next_block
+    H5S__hyper_iter_has_next_block
  PURPOSE
     Check if there is another block left in the current iterator
  USAGE
-    htri_t H5S_hyper_iter_has_next_block(iter)
+    htri_t H5S__hyper_iter_has_next_block(iter)
         const H5S_sel_iter_t *iter;       IN: Pointer to selection iterator
  RETURNS
     Non-negative (TRUE/FALSE) on success/Negative on failure
@@ -609,12 +633,12 @@ H5S_hyper_iter_nelmts (const H5S_sel_iter_t *iter)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static htri_t
-H5S_hyper_iter_has_next_block(const H5S_sel_iter_t *iter)
+H5S__hyper_iter_has_next_block(const H5S_sel_iter_t *iter)
 {
     unsigned u;                 /* Local index variable */
     htri_t ret_value = FALSE;   /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(iter);
@@ -644,11 +668,11 @@ H5S_hyper_iter_has_next_block(const H5S_sel_iter_t *iter)
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_iter_has_next_block() */
+} /* end H5S__hyper_iter_has_next_block() */
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5S_hyper_iter_next
+ * Function:	H5S__hyper_iter_next
  *
  * Purpose:	Moves a hyperslab iterator to the beginning of the next sequence
  *      of elements to read.  Handles walking off the end in all dimensions.
@@ -659,20 +683,16 @@ done:
  * Programmer:	Quincey Koziol
  *              Friday, September 8, 2000
  *
- * Modifications:
- *      Modified for both general and optimized hyperslab I/O
- *      Quincey Koziol, April 17, 2003
- *
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5S_hyper_iter_next(H5S_sel_iter_t *iter, size_t nelem)
+H5S__hyper_iter_next(H5S_sel_iter_t *iter, size_t nelem)
 {
     unsigned ndims;     /* Number of dimensions of dataset */
     int fast_dim;       /* Rank of the fastest changing dimension for the dataspace */
     unsigned i;         /* Counters */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check for the special case of just one H5Sselect_hyperslab call made */
     /* (i.e. a regular hyperslab selection */
@@ -683,53 +703,53 @@ H5S_hyper_iter_next(H5S_sel_iter_t *iter, size_t nelem)
         int temp_dim;  /* Temporary rank holder */
 
         /* Check if this is a "flattened" regular hyperslab selection */
-        if(iter->u.hyp.iter_rank!=0 && iter->u.hyp.iter_rank<iter->rank) {
+        if(iter->u.hyp.iter_rank != 0 && iter->u.hyp.iter_rank < iter->rank) {
             /* Set the aliases for the dimension rank */
-            ndims=iter->u.hyp.iter_rank;
+            ndims = iter->u.hyp.iter_rank;
         } /* end if */
         else {
             /* Set the aliases for the dimension rank */
-            ndims=iter->rank;
+            ndims = iter->rank;
         } /* end else */
 
         /* Set the fastest dimension rank */
         fast_dim = (int)ndims - 1;
 
         /* Set the local copy of the diminfo pointer */
-        tdiminfo=iter->u.hyp.diminfo;
+        tdiminfo = iter->u.hyp.diminfo;
 
         /* Calculate the offset and block count for each dimension */
-        for(i=0; i<ndims; i++) {
-            if(tdiminfo[i].count==1) {
-                iter_offset[i]=iter->u.hyp.off[i]-tdiminfo[i].start;
-                iter_count[i]=0;
+        for(i = 0; i < ndims; i++) {
+            if(tdiminfo[i].count == 1) {
+                iter_offset[i] = iter->u.hyp.off[i] - tdiminfo[i].start;
+                iter_count[i] = 0;
             } /* end if */
             else {
-                iter_offset[i]=(iter->u.hyp.off[i]-tdiminfo[i].start)%tdiminfo[i].stride;
-                iter_count[i]=(iter->u.hyp.off[i]-tdiminfo[i].start)/tdiminfo[i].stride;
+                iter_offset[i] = (iter->u.hyp.off[i] - tdiminfo[i].start) % tdiminfo[i].stride;
+                iter_count[i] = (iter->u.hyp.off[i] - tdiminfo[i].start) / tdiminfo[i].stride;
             } /* end else */
         } /* end for */
 
         /* Loop through, advancing the offset & counts, until all the nelements are accounted for */
-        while(nelem>0) {
+        while(nelem > 0) {
             /* Start with the fastest changing dimension */
-            temp_dim=fast_dim;
-            while(temp_dim>=0) {
-                if(temp_dim==fast_dim) {
+            temp_dim = fast_dim;
+            while(temp_dim >= 0) {
+                if(temp_dim == fast_dim) {
                     size_t actual_elem;     /* Actual # of elements advanced on each iteration through loop */
                     hsize_t block_elem;     /* Number of elements left in a block */
 
                     /* Compute the number of elements left in block */
-                    block_elem=tdiminfo[temp_dim].block-iter_offset[temp_dim];
+                    block_elem = tdiminfo[temp_dim].block - iter_offset[temp_dim];
 
                     /* Compute the number of actual elements to advance */
-                    actual_elem=(size_t)MIN(nelem,block_elem);
+                    actual_elem = (size_t)MIN(nelem, block_elem);
 
                     /* Move the iterator over as many elements as possible */
-                    iter_offset[temp_dim]+=actual_elem;
+                    iter_offset[temp_dim] += actual_elem;
 
                     /* Decrement the number of elements advanced */
-                    nelem-=actual_elem;
+                    nelem -= actual_elem;
                 } /* end if */
                 else {
                     /* Move to the next row in the current dimension */
@@ -737,18 +757,18 @@ H5S_hyper_iter_next(H5S_sel_iter_t *iter, size_t nelem)
                 } /* end else */
 
                 /* If this block is still in the range of blocks to output for the dimension, break out of loop */
-                if(iter_offset[temp_dim]<tdiminfo[temp_dim].block)
+                if(iter_offset[temp_dim] < tdiminfo[temp_dim].block)
                     break;
                 else {
                     /* Move to the next block in the current dimension */
-                    iter_offset[temp_dim]=0;
+                    iter_offset[temp_dim] = 0;
                     iter_count[temp_dim]++;
 
                     /* If this block is still in the range of blocks to output for the dimension, break out of loop */
-                    if(iter_count[temp_dim]<tdiminfo[temp_dim].count)
+                    if(iter_count[temp_dim] < tdiminfo[temp_dim].count)
                         break;
                     else
-                        iter_count[temp_dim]=0; /* reset back to the beginning of the line */
+                        iter_count[temp_dim] = 0; /* reset back to the beginning of the line */
                 } /* end else */
 
                 /* Decrement dimension count */
@@ -757,8 +777,8 @@ H5S_hyper_iter_next(H5S_sel_iter_t *iter, size_t nelem)
         } /* end while */
 
         /* Translate current iter_offset and iter_count into iterator position */
-        for(i=0; i<ndims; i++)
-            iter->u.hyp.off[i]=tdiminfo[i].start+(tdiminfo[i].stride*iter_count[i])+iter_offset[i];
+        for(i = 0; i < ndims; i++)
+            iter->u.hyp.off[i] = tdiminfo[i].start + (tdiminfo[i].stride * iter_count[i]) + iter_offset[i];
     } /* end if */
     /* Must be an irregular hyperslab selection */
     else {
@@ -768,39 +788,39 @@ H5S_hyper_iter_next(H5S_sel_iter_t *iter, size_t nelem)
         int curr_dim;                   /* Temporary rank holder */
 
         /* Set the rank of the fastest changing dimension */
-        ndims=iter->rank;
+        ndims = iter->rank;
         fast_dim = (int)ndims - 1;
 
         /* Get the pointers to the current span info and span nodes */
-        abs_arr=iter->u.hyp.off;
-        ispan=iter->u.hyp.span;
+        abs_arr = iter->u.hyp.off;
+        ispan = iter->u.hyp.span;
 
         /* Loop through, advancing the span information, until all the nelements are accounted for */
-        while(nelem>0) {
+        while(nelem > 0) {
             /* Start at the fastest dim */
-            curr_dim=fast_dim;
+            curr_dim = fast_dim;
 
             /* Work back up through the dimensions */
-            while(curr_dim>=0) {
+            while(curr_dim >= 0) {
                 /* Reset the current span */
-                curr_span=ispan[curr_dim];
+                curr_span = ispan[curr_dim];
 
                 /* Increment absolute position */
-                if(curr_dim==fast_dim) {
+                if(curr_dim == fast_dim) {
                     size_t actual_elem;     /* Actual # of elements advanced on each iteration through loop */
                     hsize_t span_elem;      /* Number of elements left in a span */
 
                     /* Compute the number of elements left in block */
-                    span_elem=(curr_span->high-abs_arr[curr_dim])+1;
+                    span_elem = (curr_span->high - abs_arr[curr_dim]) + 1;
 
                     /* Compute the number of actual elements to advance */
-                    actual_elem=(size_t)MIN(nelem,span_elem);
+                    actual_elem = (size_t)MIN(nelem, span_elem);
 
                     /* Move the iterator over as many elements as possible */
-                    abs_arr[curr_dim]+=actual_elem;
+                    abs_arr[curr_dim] += actual_elem;
 
                     /* Decrement the number of elements advanced */
-                    nelem-=actual_elem;
+                    nelem -= actual_elem;
                 } /* end if */
                 else {
                     /* Move to the next row in the current dimension */
@@ -808,21 +828,21 @@ H5S_hyper_iter_next(H5S_sel_iter_t *iter, size_t nelem)
                 } /* end else */
 
                 /* Check if we are still within the span */
-                if(abs_arr[curr_dim]<=curr_span->high) {
+                if(abs_arr[curr_dim] <= curr_span->high) {
                     break;
                 } /* end if */
                 /* If we walked off that span, advance to the next span */
                 else {
                     /* Advance span in this dimension */
-                    curr_span=curr_span->next;
+                    curr_span = curr_span->next;
 
                     /* Check if we have a valid span in this dimension still */
-                    if(curr_span!=NULL) {
+                    if(curr_span != NULL) {
                         /* Reset the span in the current dimension */
-                        ispan[curr_dim]=curr_span;
+                        ispan[curr_dim] = curr_span;
 
                         /* Reset absolute position */
-                        abs_arr[curr_dim]=curr_span->low;
+                        abs_arr[curr_dim] = curr_span->low;
 
                         break;
                     } /* end if */
@@ -834,9 +854,9 @@ H5S_hyper_iter_next(H5S_sel_iter_t *iter, size_t nelem)
             } /* end while */
 
             /* Check if we are finished with the spans in the tree */
-            if(curr_dim>=0) {
+            if(curr_dim >= 0) {
                 /* Walk back down the iterator positions, reseting them */
-                while(curr_dim<fast_dim) {
+                while(curr_dim < fast_dim) {
                     HDassert(curr_span);
                     HDassert(curr_span->down);
                     HDassert(curr_span->down->head);
@@ -845,27 +865,27 @@ H5S_hyper_iter_next(H5S_sel_iter_t *iter, size_t nelem)
                     curr_dim++;
 
                     /* Set the new span_info & span for this dimension */
-                    ispan[curr_dim]=curr_span->down->head;
+                    ispan[curr_dim] = curr_span->down->head;
 
                     /* Advance span down the tree */
-                    curr_span=curr_span->down->head;
+                    curr_span = curr_span->down->head;
 
                     /* Reset the absolute offset for the dim */
-                    abs_arr[curr_dim]=curr_span->low;
+                    abs_arr[curr_dim] = curr_span->low;
                 } /* end while */
 
                 /* Verify that the curr_span points to the fastest dim */
-                HDassert(curr_span==ispan[fast_dim]);
+                HDassert(curr_span == ispan[fast_dim]);
             } /* end if */
         } /* end while */
     } /* end else */
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-} /* H5S_hyper_iter_next() */
+} /* end H5S__hyper_iter_next() */
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5S_hyper_iter_next_block
+ * Function:	H5S__hyper_iter_next_block
  *
  * Purpose:	Moves a hyperslab iterator to the beginning of the next sequence
  *      of elements to read.  Handles walking off the end in all dimensions.
@@ -876,18 +896,16 @@ H5S_hyper_iter_next(H5S_sel_iter_t *iter, size_t nelem)
  * Programmer:	Quincey Koziol
  *              Tuesday, June 3, 2003
  *
- * Modifications:
- *
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5S_hyper_iter_next_block(H5S_sel_iter_t *iter)
+H5S__hyper_iter_next_block(H5S_sel_iter_t *iter)
 {
     unsigned ndims;     /* Number of dimensions of dataset */
     int fast_dim;       /* Rank of the fastest changing dimension for the dataspace */
     unsigned u;         /* Counters */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check for the special case of just one H5Sselect_hyperslab call made */
     /* (i.e. a regular hyperslab selection */
@@ -898,39 +916,39 @@ H5S_hyper_iter_next_block(H5S_sel_iter_t *iter)
         int temp_dim;  /* Temporary rank holder */
 
         /* Check if this is a "flattened" regular hyperslab selection */
-        if(iter->u.hyp.iter_rank!=0 && iter->u.hyp.iter_rank<iter->rank) {
+        if(iter->u.hyp.iter_rank != 0 && iter->u.hyp.iter_rank < iter->rank) {
             /* Set the aliases for the dimension rank */
-            ndims=iter->u.hyp.iter_rank;
+            ndims = iter->u.hyp.iter_rank;
         } /* end if */
         else {
             /* Set the aliases for the dimension rank */
-            ndims=iter->rank;
+            ndims = iter->rank;
         } /* end else */
 
         /* Set the fastest dimension rank */
         fast_dim = (int)ndims - 1;
 
         /* Set the local copy of the diminfo pointer */
-        tdiminfo=iter->u.hyp.diminfo;
+        tdiminfo = iter->u.hyp.diminfo;
 
         /* Calculate the offset and block count for each dimension */
-        for(u=0; u<ndims; u++) {
-            if(tdiminfo[u].count==1) {
-                iter_offset[u]=iter->u.hyp.off[u]-tdiminfo[u].start;
-                iter_count[u]=0;
+        for(u = 0; u < ndims; u++) {
+            if(tdiminfo[u].count == 1) {
+                iter_offset[u] = iter->u.hyp.off[u] - tdiminfo[u].start;
+                iter_count[u] = 0;
             } /* end if */
             else {
-                iter_offset[u]=(iter->u.hyp.off[u]-tdiminfo[u].start)%tdiminfo[u].stride;
-                iter_count[u]=(iter->u.hyp.off[u]-tdiminfo[u].start)/tdiminfo[u].stride;
+                iter_offset[u] = (iter->u.hyp.off[u] - tdiminfo[u].start) % tdiminfo[u].stride;
+                iter_count[u] = (iter->u.hyp.off[u] - tdiminfo[u].start) / tdiminfo[u].stride;
             } /* end else */
         } /* end for */
 
         /* Advance one block */
-        temp_dim=fast_dim; /* Start with the fastest changing dimension */
-        while(temp_dim>=0) {
-            if(temp_dim==fast_dim) {
+        temp_dim = fast_dim; /* Start with the fastest changing dimension */
+        while(temp_dim >= 0) {
+            if(temp_dim == fast_dim) {
                 /* Move iterator over current block */
-                iter_offset[temp_dim]+=tdiminfo[temp_dim].block;
+                iter_offset[temp_dim] += tdiminfo[temp_dim].block;
             } /* end if */
             else {
                 /* Move to the next row in the current dimension */
@@ -938,18 +956,18 @@ H5S_hyper_iter_next_block(H5S_sel_iter_t *iter)
             } /* end else */
 
             /* If this block is still in the range of blocks to output for the dimension, break out of loop */
-            if(iter_offset[temp_dim]<tdiminfo[temp_dim].block)
+            if(iter_offset[temp_dim] < tdiminfo[temp_dim].block)
                 break;
             else {
                 /* Move to the next block in the current dimension */
-                iter_offset[temp_dim]=0;
+                iter_offset[temp_dim] = 0;
                 iter_count[temp_dim]++;
 
                 /* If this block is still in the range of blocks to output for the dimension, break out of loop */
-                if(iter_count[temp_dim]<tdiminfo[temp_dim].count)
+                if(iter_count[temp_dim] < tdiminfo[temp_dim].count)
                     break;
                 else
-                    iter_count[temp_dim]=0; /* reset back to the beginning of the line */
+                    iter_count[temp_dim] = 0; /* reset back to the beginning of the line */
             } /* end else */
 
             /* Decrement dimension count */
@@ -957,8 +975,8 @@ H5S_hyper_iter_next_block(H5S_sel_iter_t *iter)
         } /* end while */
 
         /* Translate current iter_offset and iter_count into iterator position */
-        for(u=0; u<ndims; u++)
-            iter->u.hyp.off[u]=tdiminfo[u].start+(tdiminfo[u].stride*iter_count[u])+iter_offset[u];
+        for(u = 0; u < ndims; u++)
+            iter->u.hyp.off[u] = tdiminfo[u].start + (tdiminfo[u].stride * iter_count[u]) + iter_offset[u];
     } /* end if */
     /* Must be an irregular hyperslab selection */
     else {
@@ -972,21 +990,21 @@ H5S_hyper_iter_next_block(H5S_sel_iter_t *iter)
         fast_dim = (int)ndims - 1;
 
         /* Get the pointers to the current span info and span nodes */
-        abs_arr=iter->u.hyp.off;
-        ispan=iter->u.hyp.span;
+        abs_arr = iter->u.hyp.off;
+        ispan = iter->u.hyp.span;
 
         /* Loop through, advancing the span information, until all the nelements are accounted for */
-        curr_dim=fast_dim; /* Start at the fastest dim */
+        curr_dim = fast_dim; /* Start at the fastest dim */
 
         /* Work back up through the dimensions */
-        while(curr_dim>=0) {
+        while(curr_dim >= 0) {
             /* Reset the current span */
-            curr_span=ispan[curr_dim];
+            curr_span = ispan[curr_dim];
 
             /* Increment absolute position */
-            if(curr_dim==fast_dim) {
+            if(curr_dim == fast_dim) {
                 /* Move the iterator over rest of element in span */
-                abs_arr[curr_dim]=curr_span->high+1;
+                abs_arr[curr_dim] = curr_span->high + 1;
             } /* end if */
             else {
                 /* Move to the next row in the current dimension */
@@ -994,21 +1012,21 @@ H5S_hyper_iter_next_block(H5S_sel_iter_t *iter)
             } /* end else */
 
             /* Check if we are still within the span */
-            if(abs_arr[curr_dim]<=curr_span->high) {
+            if(abs_arr[curr_dim] <= curr_span->high) {
                 break;
             } /* end if */
             /* If we walked off that span, advance to the next span */
             else {
                 /* Advance span in this dimension */
-                curr_span=curr_span->next;
+                curr_span = curr_span->next;
 
                 /* Check if we have a valid span in this dimension still */
-                if(curr_span!=NULL) {
+                if(curr_span != NULL) {
                     /* Reset the span in the current dimension */
-                    ispan[curr_dim]=curr_span;
+                    ispan[curr_dim] = curr_span;
 
                     /* Reset absolute position */
-                    abs_arr[curr_dim]=curr_span->low;
+                    abs_arr[curr_dim] = curr_span->low;
 
                     break;
                 } /* end if */
@@ -1020,9 +1038,9 @@ H5S_hyper_iter_next_block(H5S_sel_iter_t *iter)
         } /* end while */
 
         /* Check if we are finished with the spans in the tree */
-        if(curr_dim>=0) {
+        if(curr_dim >= 0) {
             /* Walk back down the iterator positions, reseting them */
-            while(curr_dim<fast_dim) {
+            while(curr_dim < fast_dim) {
                 HDassert(curr_span);
                 HDassert(curr_span->down);
                 HDassert(curr_span->down->head);
@@ -1031,13 +1049,13 @@ H5S_hyper_iter_next_block(H5S_sel_iter_t *iter)
                 curr_dim++;
 
                 /* Set the new span_info & span for this dimension */
-                ispan[curr_dim]=curr_span->down->head;
+                ispan[curr_dim] = curr_span->down->head;
 
                 /* Advance span down the tree */
-                curr_span=curr_span->down->head;
+                curr_span = curr_span->down->head;
 
                 /* Reset the absolute offset for the dim */
-                abs_arr[curr_dim]=curr_span->low;
+                abs_arr[curr_dim] = curr_span->low;
             } /* end while */
 
             /* Verify that the curr_span points to the fastest dim */
@@ -1046,16 +1064,16 @@ H5S_hyper_iter_next_block(H5S_sel_iter_t *iter)
     } /* end else */
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-} /* H5S_hyper_iter_next() */
+} /* end H5S__hyper_iter_next() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_iter_release
+    H5S__hyper_iter_release
  PURPOSE
     Release hyperslab selection iterator information for a dataspace
  USAGE
-    herr_t H5S_hyper_iter_release(iter)
+    herr_t H5S__hyper_iter_release(iter)
         H5S_sel_iter_t *iter;       IN: Pointer to selection iterator
  RETURNS
     Non-negative on success/Negative on failure
@@ -1067,9 +1085,9 @@ H5S_hyper_iter_next_block(H5S_sel_iter_t *iter)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_iter_release (H5S_sel_iter_t *iter)
+H5S__hyper_iter_release(H5S_sel_iter_t *iter)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(iter);
@@ -1077,19 +1095,19 @@ H5S_hyper_iter_release (H5S_sel_iter_t *iter)
 /* Release the information needed for non-regular hyperslab I/O */
     /* Free the copy of the selections span tree */
     if(iter->u.hyp.spans != NULL)
-        H5S_hyper_free_span_info(iter->u.hyp.spans);
+        H5S__hyper_free_span_info(iter->u.hyp.spans);
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_hyper_iter_release() */
+} /* end H5S__hyper_iter_release() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_new_span
+    H5S__hyper_new_span
  PURPOSE
     Make a new hyperslab span node
  USAGE
-    H5S_hyper_span_t *H5S_hyper_new_span(low, high, down, next)
+    H5S_hyper_span_t *H5S__hyper_new_span(low, high, down, next)
         hsize_t low, high;         IN: Low and high bounds for new span node
         H5S_hyper_span_info_t *down;     IN: Down span tree for new node
         H5S_hyper_span_t *next;     IN: Next span for new node
@@ -1105,11 +1123,11 @@ H5S_hyper_iter_release (H5S_sel_iter_t *iter)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static H5S_hyper_span_t *
-H5S_hyper_new_span(hsize_t low, hsize_t high, H5S_hyper_span_info_t *down, H5S_hyper_span_t *next)
+H5S__hyper_new_span(hsize_t low, hsize_t high, H5S_hyper_span_info_t *down, H5S_hyper_span_t *next)
 {
     H5S_hyper_span_t *ret_value = NULL;         /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC
 
     /* Allocate a new span node */
     if(NULL == (ret_value = H5FL_MALLOC(H5S_hyper_span_t)))
@@ -1129,20 +1147,20 @@ H5S_hyper_new_span(hsize_t low, hsize_t high, H5S_hyper_span_info_t *down, H5S_h
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_new_span() */
+} /* end H5S__hyper_new_span() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_span_precompute_helper
+    H5S__hyper_span_precompute_helper
  PURPOSE
     Helper routine to precompute the nelem and pstrides in bytes.
  USAGE
-    herr_t H5S_hyper_span_precompute_helper(span_info, elmt_size)
+    void H5S__hyper_span_precompute_helper(span_info, elmt_size)
         H5S_hyper_span_info_t *span_info;      IN/OUT: Span tree to work on
         size_t elmt_size;                      IN: element size to work with
  RETURNS
-    Non-negative on success, negative on failure
+    None
  DESCRIPTION
     Change the nelem and pstride values in the span tree from elements to
     bytes using the elmt_size parameter.
@@ -1151,53 +1169,52 @@ done:
  EXAMPLES
  REVISION LOG
 --------------------------------------------------------------------------*/
-static herr_t
-H5S_hyper_span_precompute_helper (H5S_hyper_span_info_t *spans, size_t elmt_size)
+static void
+H5S__hyper_span_precompute_helper(H5S_hyper_span_info_t *spans, size_t elmt_size)
 {
-    H5S_hyper_span_t *span;     /* Hyperslab span */
-    herr_t      ret_value = SUCCEED;       /* Return value */
-
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC_NOERR
 
+    /* Sanity checks */
     HDassert(spans);
+    HDassert(spans->scratch == (H5S_hyper_span_info_t *)~((size_t)NULL) ||
+        spans->scratch == NULL);
 
     /* Check if we've already set this down span tree */
-    if(spans->scratch!=(H5S_hyper_span_info_t *)~((size_t)NULL)) {
+    if(spans->scratch != (H5S_hyper_span_info_t *)~((size_t)NULL)) {
+        H5S_hyper_span_t *span;             /* Hyperslab span */
+
         /* Set the tree's scratch pointer */
-        spans->scratch=(H5S_hyper_span_info_t *)~((size_t)NULL);
+        spans->scratch = (H5S_hyper_span_info_t *)~((size_t)NULL);
 
         /* Set the scratch pointers in all the nodes */
-        span=spans->head;
+        span = spans->head;
 
         /* Loop over all the spans for this down span tree */
-        while(span!=NULL) {
-            /* If there are down spans, set their scratch value also */
-            if(span->down!=NULL) {
-                if(H5S_hyper_span_precompute_helper(span->down,elmt_size)==FAIL)
-                    HGOTO_ERROR(H5E_INTERNAL, H5E_CANTFREE, FAIL, "can't reset hyperslab scratch pointer")
-            } /* end if */
+        while(span != NULL) {
+            /* If there are down spans, precompute their values also */
+            if(span->down != NULL)
+                H5S__hyper_span_precompute_helper(span->down, elmt_size);
 
             /* Change the nelem & pstride values into bytes */
             span->nelem *= elmt_size;
             span->pstride *= elmt_size;
 
             /* Advance to next span */
-            span=span->next;
+            span = span->next;
         } /* end while */
     } /* end if */
 
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_span_precompute_helper() */
+    FUNC_LEAVE_NOAPI_VOID
+} /* end H5S__hyper_span_precompute_helper() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_span_precompute
+    H5S__hyper_span_precompute
  PURPOSE
     Precompute the nelem and pstrides in bytes.
  USAGE
-    herr_t H5S_hyper_span_precompute(span_info, elmt_size)
+    herr_t H5S__hyper_span_precompute(span_info, elmt_size)
         H5S_hyper_span_info_t *span_info;      IN/OUT: Span tree to work on
         size_t elmt_size;                      IN: element size to work with
  RETURNS
@@ -1211,63 +1228,59 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_span_precompute(H5S_hyper_span_info_t *spans, size_t elmt_size)
+H5S__hyper_span_precompute(H5S_hyper_span_info_t *spans, size_t elmt_size)
 {
-    herr_t      ret_value = SUCCEED;       /* Return value */
-
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC_NOERR
 
     HDassert(spans);
 
     /* Call the helper routine to actually do the work */
-    if(H5S_hyper_span_precompute_helper(spans, elmt_size) < 0)
-        HGOTO_ERROR(H5E_INTERNAL, H5E_CANTFREE, FAIL, "can't precompute span info")
+    H5S__hyper_span_precompute_helper(spans, elmt_size);
 
     /* Reset the scratch pointers for the next routine which needs them */
-    H5S_hyper_span_scratch(spans, NULL);
+    H5S__hyper_span_scratch(spans);
 
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_span_precompute() */
+    FUNC_LEAVE_NOAPI(SUCCEED)
+} /* end H5S__hyper_span_precompute() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_span_scratch
+    H5S__hyper_span_scratch
  PURPOSE
-    Set the scratch pointers on hyperslab span trees
+    Reset the scratch pointers on hyperslab span trees
  USAGE
-    void H5S_hyper_span_scratch(span_info)
+    void H5S__hyper_span_scratch(span_info)
         H5S_hyper_span_info_t *span_info;      IN: Span tree to reset
  RETURNS
     <none>
  DESCRIPTION
-    Set the scratch pointers on a hyperslab span tree.
+    Reset the scratch pointers on a hyperslab span tree to NULL.
  GLOBAL VARIABLES
  COMMENTS, BUGS, ASSUMPTIONS
  EXAMPLES
  REVISION LOG
 --------------------------------------------------------------------------*/
 static void
-H5S_hyper_span_scratch(H5S_hyper_span_info_t *spans, void *scr_value)
+H5S__hyper_span_scratch(H5S_hyper_span_info_t *spans)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     HDassert(spans);
 
     /* Check if we've already set this down span tree */
-    if(spans->scratch != scr_value) {
+    if(spans->scratch != NULL) {
         H5S_hyper_span_t *span;             /* Hyperslab span */
 
-        /* Set the tree's scratch pointer */
-        spans->scratch = (H5S_hyper_span_info_t *)scr_value;
+        /* Reset the tree's scratch pointer */
+        spans->scratch = NULL;
 
         /* Set the scratch pointers in all the nodes */
         span = spans->head;
         while(span != NULL) {
             /* If there are down spans, set their scratch value also */
             if(span->down != NULL)
-                H5S_hyper_span_scratch(span->down, scr_value);
+                H5S__hyper_span_scratch(span->down);
 
             /* Advance to next span */
             span = span->next;
@@ -1275,16 +1288,16 @@ H5S_hyper_span_scratch(H5S_hyper_span_info_t *spans, void *scr_value)
     } /* end if */
 
     FUNC_LEAVE_NOAPI_VOID
-}   /* H5S_hyper_span_scratch() */
+} /* end H5S__hyper_span_scratch() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_copy_span_helper
+    H5S__hyper_copy_span_helper
  PURPOSE
     Helper routine to copy a hyperslab span tree
  USAGE
-    H5S_hyper_span_info_t * H5S_hyper_copy_span_helper(spans)
+    H5S_hyper_span_info_t * H5S__hyper_copy_span_helper(spans)
         H5S_hyper_span_info_t *spans;      IN: Span tree to copy
  RETURNS
     Pointer to the copied span tree on success, NULL on failure
@@ -1296,7 +1309,7 @@ H5S_hyper_span_scratch(H5S_hyper_span_info_t *spans, void *scr_value)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static H5S_hyper_span_info_t *
-H5S_hyper_copy_span_helper (H5S_hyper_span_info_t *spans)
+H5S__hyper_copy_span_helper(H5S_hyper_span_info_t *spans)
 {
     H5S_hyper_span_t *span;         /* Hyperslab span */
     H5S_hyper_span_t *new_span;     /* Temporary hyperslab span */
@@ -1304,12 +1317,14 @@ H5S_hyper_copy_span_helper (H5S_hyper_span_info_t *spans)
     H5S_hyper_span_info_t *new_down;    /* New down span tree */
     H5S_hyper_span_info_t *ret_value = NULL;    /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC
 
+    /* Sanity checks */
     HDassert(spans);
+    HDassert(spans->scratch != (H5S_hyper_span_info_t *)~((size_t)NULL));
 
     /* Check if the span tree was already copied */
-    if(spans->scratch != NULL && spans->scratch != (H5S_hyper_span_info_t *)~((size_t)NULL)) {
+    if(spans->scratch != NULL) {
         /* Just return the value of the already copied span tree */
         ret_value = spans->scratch;
 
@@ -1318,13 +1333,11 @@ H5S_hyper_copy_span_helper (H5S_hyper_span_info_t *spans)
     } /* end if */
     else {
         /* Allocate a new span_info node */
-        if(NULL == (ret_value = H5FL_MALLOC(H5S_hyper_span_info_t)))
+        if(NULL == (ret_value = H5FL_CALLOC(H5S_hyper_span_info_t)))
             HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, NULL, "can't allocate hyperslab span info")
 
         /* Copy the span_info information */
         ret_value->count = 1;
-        ret_value->scratch = NULL;
-        ret_value->head = NULL;
 
         /* Set the scratch pointer in the node being copied to the newly allocated node */
         spans->scratch = ret_value;
@@ -1334,7 +1347,7 @@ H5S_hyper_copy_span_helper (H5S_hyper_span_info_t *spans)
         prev_span = NULL;
         while(span != NULL) {
             /* Allocate a new node */
-            if(NULL == (new_span = H5S_hyper_new_span(span->low, span->high, NULL, NULL)))
+            if(NULL == (new_span = H5S__hyper_new_span(span->low, span->high, NULL, NULL)))
                 HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, NULL, "can't allocate hyperslab span")
 
             /* Append to list of spans */
@@ -1348,7 +1361,7 @@ H5S_hyper_copy_span_helper (H5S_hyper_span_info_t *spans)
 
             /* Recurse to copy the 'down' spans, if there are any */
             if(span->down != NULL) {
-                if(NULL == (new_down = H5S_hyper_copy_span_helper(span->down)))
+                if(NULL == (new_down = H5S__hyper_copy_span_helper(span->down)))
                     HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCOPY, NULL, "can't copy hyperslab spans")
                 new_span->down = new_down;
             } /* end if */
@@ -1363,16 +1376,16 @@ H5S_hyper_copy_span_helper (H5S_hyper_span_info_t *spans)
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_copy_span_helper() */
+} /* end H5S__hyper_copy_span_helper() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_copy_span
+    H5S__hyper_copy_span
  PURPOSE
     Copy a hyperslab span tree
  USAGE
-    H5S_hyper_span_info_t * H5S_hyper_copy_span(span_info)
+    H5S_hyper_span_info_t * H5S__hyper_copy_span(span_info)
         H5S_hyper_span_info_t *span_info;      IN: Span tree to copy
  RETURNS
     Non-negative on success, negative on failure
@@ -1386,37 +1399,37 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static H5S_hyper_span_info_t *
-H5S_hyper_copy_span(H5S_hyper_span_info_t *spans)
+H5S__hyper_copy_span(H5S_hyper_span_info_t *spans)
 {
     H5S_hyper_span_info_t *ret_value = NULL;    /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC
 
     HDassert(spans);
 
     /* Copy the hyperslab span tree */
-    if(NULL == (ret_value = H5S_hyper_copy_span_helper(spans)))
+    if(NULL == (ret_value = H5S__hyper_copy_span_helper(spans)))
         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCOPY, NULL, "can't copy hyperslab span tree")
 
     /* Reset the scratch pointers for the next routine which needs them */
-    H5S_hyper_span_scratch(spans, NULL);
+    H5S__hyper_span_scratch(spans);
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_copy_span() */
+} /* end H5S__hyper_copy_span() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_cmp_spans
+    H5S__hyper_cmp_spans
  PURPOSE
     Check if two hyperslab slabs are the same
  USAGE
-    htri_d H5S_hyper_cmp_spans(span1, span2)
+    hbool_t H5S__hyper_cmp_spans(span1, span2)
         H5S_hyper_span_t *span1;    IN: First span tree to compare
         H5S_hyper_span_t *span2;    IN: Second span tree to compare
  RETURNS
-    TRUE (1) or FALSE (0) on success, negative on failure
+    TRUE (1) or FALSE (0) on success, can't fail
  DESCRIPTION
     Compare two hyperslab slabs to determine if they refer to the same
     selection.  If span1 & span2 are both NULL, that counts as equal
@@ -1425,69 +1438,63 @@ done:
  EXAMPLES
  REVISION LOG
 --------------------------------------------------------------------------*/
-static htri_t
-H5S_hyper_cmp_spans (H5S_hyper_span_info_t *span_info1, H5S_hyper_span_info_t *span_info2)
+static hbool_t
+H5S__hyper_cmp_spans(const H5S_hyper_span_info_t *span_info1, const H5S_hyper_span_info_t *span_info2)
 {
-    H5S_hyper_span_t *span1;
-    H5S_hyper_span_t *span2;
-    htri_t nest=FAIL;
-    htri_t ret_value=FAIL;
+    hbool_t ret_value = FALSE;    /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check for redundant comparison */
-    if(span_info1==span_info2)
-        ret_value=TRUE;
+    if(span_info1 == span_info2)
+        ret_value = TRUE;
     else {
+        const H5S_hyper_span_t *span1;
+        const H5S_hyper_span_t *span2;
+
         /* Check for both spans being NULL */
-        if(span_info1==NULL && span_info2==NULL)
-            ret_value=TRUE;
+        if(span_info1 == NULL && span_info2 == NULL)
+            ret_value = TRUE;
         else {
             /* Check for one span being NULL */
-            if(span_info1==NULL || span_info2==NULL)
-                ret_value=FALSE;
+            if(span_info1 == NULL || span_info2 == NULL)
+                ret_value = FALSE;
             else {
                 /* Get the pointers to the actual lists of spans */
-                span1=span_info1->head;
-                span2=span_info2->head;
+                span1 = span_info1->head;
+                span2 = span_info2->head;
 
                 /* Sanity checking */
                 HDassert(span1);
                 HDassert(span2);
 
                 /* infinite loop which must be broken out of */
-                while (1) {
+                while(1) {
                     /* Check for both spans being NULL */
-                    if(span1==NULL && span2==NULL) {
-                        ret_value=TRUE;
+                    if(span1 == NULL && span2 == NULL) {
+                        ret_value = TRUE;
                         break;
                     } /* end if */
                     else {
                         /* Check for one span being NULL */
-                        if(span1==NULL || span2==NULL) {
-                            ret_value=FALSE;
+                        if(span1 == NULL || span2 == NULL) {
+                            ret_value = FALSE;
                             break;
                         } /* end if */
                         else {
                             /* Check if the actual low & high span information is the same */
-                            if(span1->low!=span2->low || span1->high!=span2->high) {
-                                ret_value=FALSE;
+                            if(span1->low != span2->low || span1->high != span2->high) {
+                                ret_value = FALSE;
                                 break;
                             } /* end if */
                             else {
-                                if(span1->down!=NULL || span2!=NULL) {
-                                    if((nest=H5S_hyper_cmp_spans(span1->down,span2->down))==FAIL) {
-                                        ret_value=FAIL;
+                                if(span1->down != NULL || span2 != NULL) {
+                                    if(!H5S__hyper_cmp_spans(span1->down, span2->down)) {
+                                        ret_value = FALSE;
                                         break;
                                     } /* end if */
                                     else {
-                                        if(nest==FALSE) {
-                                            ret_value=FALSE;
-                                            break;
-                                        } /* end if */
-                                        else {
-                                            /* Keep going... */
-                                        } /* end else */
+                                        /* Keep going... */
                                     } /* end else */
                                 } /* end if */
                                 else {
@@ -1498,24 +1505,24 @@ H5S_hyper_cmp_spans (H5S_hyper_span_info_t *span_info1, H5S_hyper_span_info_t *s
                     } /* end else */
 
                     /* Advance to the next nodes in the span list */
-                    span1=span1->next;
-                    span2=span2->next;
+                    span1 = span1->next;
+                    span2 = span2->next;
                 } /* end while */
             } /* end else */
         } /* end else */
     } /* end else */
 
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_cmp_spans() */
+} /* end H5S__hyper_cmp_spans() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_free_span_info
+    H5S__hyper_free_span_info
  PURPOSE
     Free a hyperslab span info node
  USAGE
-    herr_t H5S_hyper_free_span_info(span_info)
+    herr_t H5S__hyper_free_span_info(span_info)
         H5S_hyper_span_info_t *span_info;      IN: Span info node to free
  RETURNS
     Non-negative on success, negative on failure
@@ -1529,12 +1536,12 @@ H5S_hyper_cmp_spans (H5S_hyper_span_info_t *span_info1, H5S_hyper_span_info_t *s
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_free_span_info (H5S_hyper_span_info_t *span_info)
+H5S__hyper_free_span_info(H5S_hyper_span_info_t *span_info)
 {
     H5S_hyper_span_t *span, *next_span;
-    herr_t      ret_value=SUCCEED;       /* Return value */
+    herr_t      ret_value = SUCCEED;    /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC
 
     HDassert(span_info);
 
@@ -1542,15 +1549,15 @@ H5S_hyper_free_span_info (H5S_hyper_span_info_t *span_info)
     span_info->count--;
 
     /* Free the span tree if the reference count drops to zero */
-    if(span_info->count==0) {
+    if(span_info->count == 0) {
 
         /* Work through the list of spans pointed to by this 'info' node */
-        span=span_info->head;
-        while(span!=NULL) {
-            next_span=span->next;
-            if(H5S_hyper_free_span(span)<0)
+        span = span_info->head;
+        while(span != NULL) {
+            next_span = span->next;
+            if(H5S__hyper_free_span(span) < 0)
                 HGOTO_ERROR(H5E_INTERNAL, H5E_CANTFREE, FAIL, "failed to release hyperslab span")
-            span=next_span;
+            span = next_span;
         } /* end while */
 
         /* Free this span info */
@@ -1559,16 +1566,16 @@ H5S_hyper_free_span_info (H5S_hyper_span_info_t *span_info)
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_free_span_info() */
+} /* end H5S__hyper_free_span_info() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_free_span
+    H5S__hyper_free_span
  PURPOSE
     Free a hyperslab span node
  USAGE
-    herr_t H5S_hyper_free_span(span)
+    herr_t H5S__hyper_free_span(span)
         H5S_hyper_span_t *span;      IN: Span node to free
  RETURNS
     Non-negative on success, negative on failure
@@ -1582,35 +1589,34 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_free_span (H5S_hyper_span_t *span)
+H5S__hyper_free_span(H5S_hyper_span_t *span)
 {
-    herr_t ret_value=SUCCEED;
+    herr_t ret_value = SUCCEED;
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC
 
     HDassert(span);
 
     /* Decrement the reference count of the 'down spans', freeing them if appropriate */
-    if(span->down!=NULL) {
-        if(H5S_hyper_free_span_info(span->down)<0)
+    if(span->down != NULL)
+        if(H5S__hyper_free_span_info(span->down) < 0)
             HGOTO_ERROR(H5E_INTERNAL, H5E_CANTFREE, FAIL, "failed to release hyperslab span tree")
-    } /* end if */
 
     /* Free this span */
     span = H5FL_FREE(H5S_hyper_span_t, span);
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_free_span() */
+} /* end H5S__hyper_free_span() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_copy
+    H5S__hyper_copy
  PURPOSE
     Copy a selection from one dataspace to another
  USAGE
-    herr_t H5S_hyper_copy(dst, src)
+    herr_t H5S__hyper_copy(dst, src)
         H5S_t *dst;  OUT: Pointer to the destination dataspace
         H5S_t *src;  IN: Pointer to the source dataspace
  RETURNS
@@ -1629,27 +1635,28 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_copy (H5S_t *dst, const H5S_t *src, hbool_t share_selection)
+H5S__hyper_copy(H5S_t *dst, const H5S_t *src, hbool_t share_selection)
 {
     H5S_hyper_sel_t *dst_hslab;         /* Pointer to destination hyperslab info */
     const H5S_hyper_sel_t *src_hslab;   /* Pointer to source hyperslab info */
-    herr_t ret_value=SUCCEED;   /* return value */
+    herr_t ret_value = SUCCEED;         /* Return value */
 
-    FUNC_ENTER_NOAPI(FAIL)
+    FUNC_ENTER_STATIC
 
+    /* Sanity check */
     HDassert(src);
     HDassert(dst);
 
     /* Allocate space for the hyperslab selection information */
     if(NULL == (dst->select.sel_info.hslab = H5FL_MALLOC(H5S_hyper_sel_t)))
-        HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't allocate hyperslab info")
+        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, FAIL, "can't allocate hyperslab info")
 
     /* Set temporary pointers */
-    dst_hslab=dst->select.sel_info.hslab;
-    src_hslab=src->select.sel_info.hslab;
+    dst_hslab = dst->select.sel_info.hslab;
+    src_hslab = src->select.sel_info.hslab;
 
     /* Copy the hyperslab information */
-    dst_hslab->diminfo_valid=src_hslab->diminfo_valid;
+    dst_hslab->diminfo_valid = src_hslab->diminfo_valid;
     if(src_hslab->diminfo_valid) {
         size_t u;       /* Local index variable */
 
@@ -1658,42 +1665,46 @@ H5S_hyper_copy (H5S_t *dst, const H5S_t *src, hbool_t share_selection)
             dst_hslab->app_diminfo[u]=src_hslab->app_diminfo[u];
         } /* end for */
     } /* end if */
-    dst_hslab->unlim_dim = src_hslab->unlim_dim;
-    dst_hslab->num_elem_non_unlim = src_hslab->num_elem_non_unlim;
     dst->select.sel_info.hslab->span_lst=src->select.sel_info.hslab->span_lst;
 
     /* Check if there is hyperslab span information to copy */
     /* (Regular hyperslab information is copied with the selection structure) */
-    if(src->select.sel_info.hslab->span_lst!=NULL) {
+    if(src->select.sel_info.hslab->span_lst != NULL) {
         if(share_selection) {
             /* Share the source's span tree by incrementing the reference count on it */
+            dst->select.sel_info.hslab->span_lst = src->select.sel_info.hslab->span_lst;
             dst->select.sel_info.hslab->span_lst->count++;
         } /* end if */
         else
             /* Copy the hyperslab span information */
-            dst->select.sel_info.hslab->span_lst = H5S_hyper_copy_span(src->select.sel_info.hslab->span_lst);
+            dst->select.sel_info.hslab->span_lst = H5S__hyper_copy_span(src->select.sel_info.hslab->span_lst);
     } /* end if */
+    else
+        dst->select.sel_info.hslab->span_lst = NULL;
+
+    /* Copy the unlimited dimension info */
+    dst_hslab->unlim_dim = src_hslab->unlim_dim;
+    dst_hslab->num_elem_non_unlim = src_hslab->num_elem_non_unlim;
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5S_hyper_copy() */
+} /* end H5S__hyper_copy() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_is_valid_helper
+    H5S__hyper_is_valid_helper
  PURPOSE
     Check whether the selection fits within the extent, with the current
     offset defined.
  USAGE
-    htri_t H5S_hyper_is_valid_helper(spans, offset, rank);
+    hbool_t H5S__hyper_is_valid_helper(spans, offset, rank);
         const H5S_hyper_span_info_t *spans; IN: Pointer to current hyperslab span tree
         const hssize_t *offset;             IN: Pointer to offset array
         const hsize_t *size;                IN: Pointer to size array
         hsize_t rank;                       IN: Current rank looking at
  RETURNS
-    TRUE if the selection fits within the extent, FALSE if it does not and
-        Negative on an error.
+    TRUE if the selection fits within the extent, FALSE if it does not
  DESCRIPTION
     Determines if the current selection at the current offet fits within the
     extent for the dataspace.
@@ -1702,57 +1713,52 @@ done:
  EXAMPLES
  REVISION LOG
 --------------------------------------------------------------------------*/
-static htri_t
-H5S_hyper_is_valid_helper (const H5S_hyper_span_info_t *spans, const hssize_t *offset, const hsize_t *size, hsize_t rank)
+static hbool_t
+H5S__hyper_is_valid_helper(const H5S_hyper_span_info_t *spans, const hssize_t *offset,
+    const hsize_t *size)
 {
     H5S_hyper_span_t *curr;     /* Hyperslab information nodes */
-    htri_t tmp;                 /* temporary return value */
-    htri_t ret_value=TRUE;      /* return value */
+    hbool_t ret_value = TRUE;   /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     HDassert(spans);
     HDassert(offset);
     HDassert(size);
-    HDassert(rank < H5O_LAYOUT_NDIMS);
 
-    /* Check each point to determine whether selection+offset is within extent */
-    curr=spans->head;
-    while(curr!=NULL && ret_value==TRUE) {
+    /* Check each point to determine whether selection + offset is within extent */
+    curr = spans->head;
+    while(curr != NULL) {
         /* Check if an offset has been defined */
         /* Bounds check the selected point + offset against the extent */
-        if((((hssize_t)curr->low+offset[rank])>=(hssize_t)size[rank])
-                || (((hssize_t)curr->low+offset[rank])<0)
-                || (((hssize_t)curr->high+offset[rank])>=(hssize_t)size[rank])
-                || (((hssize_t)curr->high+offset[rank])<0)) {
-            ret_value=FALSE;
-            break;
-        } /* end if */
+        if((((hssize_t)curr->low + *offset) >= (hssize_t)*size)
+                || (((hssize_t)curr->low + *offset) < 0)
+                || (((hssize_t)curr->high + *offset) >= (hssize_t)*size)
+                || (((hssize_t)curr->high + *offset) < 0))
+            HGOTO_DONE(FALSE)
 
         /* Recurse if this node has down spans */
-        if(curr->down!=NULL) {
-            if((tmp=H5S_hyper_is_valid_helper(curr->down,offset,size,rank+1))!=TRUE) {
-                ret_value=tmp;
-                break;
-            } /* end if */
-        } /* end if */
+        if(curr->down != NULL)
+            if(!H5S__hyper_is_valid_helper(curr->down, offset + 1, size + 1))
+                HGOTO_DONE(FALSE)
 
         /* Advance to next node */
-        curr=curr->next;
+        curr = curr->next;
     } /* end while */
 
+done:
     FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5S_hyper_is_valid_helper() */
+} /* end H5S__hyper_is_valid_helper() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_is_valid
+    H5S__hyper_is_valid
  PURPOSE
     Check whether the selection fits within the extent, with the current
     offset defined.
  USAGE
-    htri_t H5S_hyper_is_valid(space);
+    htri_t H5S__hyper_is_valid(space);
         H5S_t *space;             IN: Dataspace pointer to query
  RETURNS
     TRUE if the selection fits within the extent, FALSE if it does not and
@@ -1766,12 +1772,11 @@ H5S_hyper_is_valid_helper (const H5S_hyper_span_info_t *spans, const hssize_t *o
  REVISION LOG
 --------------------------------------------------------------------------*/
 static htri_t
-H5S_hyper_is_valid (const H5S_t *space)
+H5S__hyper_is_valid(const H5S_t *space)
 {
-    unsigned u;                    /* Counter */
     htri_t ret_value = TRUE;      /* return value */
 
-    FUNC_ENTER_NOAPI(FAIL)
+    FUNC_ENTER_STATIC_NOERR
 
     HDassert(space);
 
@@ -1783,43 +1788,43 @@ H5S_hyper_is_valid (const H5S_t *space)
     if(space->select.sel_info.hslab->diminfo_valid) {
         const H5S_hyper_dim_t *diminfo=space->select.sel_info.hslab->opt_diminfo; /* local alias for diminfo */
         hssize_t end;      /* The high bound of a region in a dimension */
+        unsigned u;        /* Counter */
 
         /* Check each dimension */
-        for(u=0; u<space->extent.rank; u++) {
+        for(u = 0; u < space->extent.rank; u++) {
             /* if block or count is zero, then can skip the test since */
             /* no data point is chosen */
-            if (diminfo[u].count && diminfo[u].block) {
+            if(diminfo[u].count && diminfo[u].block) {
                 /* Bounds check the start point in this dimension */
-                if(((hssize_t)diminfo[u].start+space->select.offset[u])<0 ||
-                        ((hssize_t)diminfo[u].start+space->select.offset[u])>=(hssize_t)space->extent.size[u])
+                if(((hssize_t)diminfo[u].start + space->select.offset[u]) < 0 ||
+                        ((hssize_t)diminfo[u].start + space->select.offset[u]) >= (hssize_t)space->extent.size[u])
                     HGOTO_DONE(FALSE)
 
                 /* Compute the largest location in this dimension */
-                end=(hssize_t)(diminfo[u].start+diminfo[u].stride*(diminfo[u].count-1)+(diminfo[u].block-1))+space->select.offset[u];
+                end = (hssize_t)(diminfo[u].start + diminfo[u].stride * (diminfo[u].count - 1) + (diminfo[u].block - 1)) + space->select.offset[u];
 
                 /* Bounds check the end point in this dimension */
-                if(end<0 || end>=(hssize_t)space->extent.size[u])
+                if(end < 0 || end >= (hssize_t)space->extent.size[u])
                     HGOTO_DONE(FALSE)
             } /* end if */
         } /* end for */
     } /* end if */
-    else {
+    else
         /* Call the recursive routine to validate the span tree */
-        ret_value=H5S_hyper_is_valid_helper(space->select.sel_info.hslab->span_lst,space->select.offset,space->extent.size,(hsize_t)0);
-    } /* end else */
+        ret_value = H5S__hyper_is_valid_helper(space->select.sel_info.hslab->span_lst, space->select.offset, space->extent.size);
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5S_hyper_is_valid() */
+} /* end H5S__hyper_is_valid() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_span_nblocks
+    H5S__hyper_span_nblocks
  PURPOSE
     Count the number of blocks in a span tree
  USAGE
-    hsize_t H5S_hyper_span_nblocks(spans)
+    hsize_t H5S__hyper_span_nblocks(spans)
         const H5S_hyper_span_info_t *spans; IN: Hyperslab span tree to count elements of
  RETURNS
     Number of blocks in span tree on success; negative on failure
@@ -1831,20 +1836,21 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static hsize_t
-H5S_hyper_span_nblocks(H5S_hyper_span_info_t *spans)
+H5S__hyper_span_nblocks(const H5S_hyper_span_info_t *spans)
 {
-    H5S_hyper_span_t *span;     /* Hyperslab span */
     hsize_t ret_value = 0;      /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Count the number of elements in the span tree */
     if(spans != NULL) {
+        H5S_hyper_span_t *span;     /* Hyperslab span */
+
         span = spans->head;
         while(span != NULL) {
             /* If there are down spans, add the total down span blocks */
-            if(span->down!=NULL)
-                ret_value += H5S_hyper_span_nblocks(span->down);
+            if(span->down != NULL)
+                ret_value += H5S__hyper_span_nblocks(span->down);
             /* If there are no down spans, just count the block in this span */
             else
                 ret_value++;
@@ -1855,16 +1861,16 @@ H5S_hyper_span_nblocks(H5S_hyper_span_info_t *spans)
     } /* end else */
 
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_span_nblocks() */
+} /* end H5S__hyper_span_nblocks() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_get_select_hyper_nblocks
+    H5S__get_select_hyper_nblocks
  PURPOSE
     Get the number of hyperslab blocks in current hyperslab selection
  USAGE
-    hsize_t H5S_get_select_hyper_nblocks(space)
+    hsize_t H5S__get_select_hyper_nblocks(space)
         H5S_t *space;             IN: Dataspace ptr of selection to query
  RETURNS
     The number of hyperslab blocks in selection on success, negative on failure
@@ -1876,11 +1882,11 @@ H5S_hyper_span_nblocks(H5S_hyper_span_info_t *spans)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static hsize_t
-H5S_get_select_hyper_nblocks(H5S_t *space)
+H5S__get_select_hyper_nblocks(const H5S_t *space)
 {
     hsize_t ret_value = 0;      /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     HDassert(space);
     HDassert(space->select.sel_info.hslab->unlim_dim < 0);
@@ -1894,10 +1900,10 @@ H5S_get_select_hyper_nblocks(H5S_t *space)
             ret_value *= space->select.sel_info.hslab->app_diminfo[u].count;
     } /* end if */
     else
-        ret_value = H5S_hyper_span_nblocks(space->select.sel_info.hslab->span_lst);
+        ret_value = H5S__hyper_span_nblocks(space->select.sel_info.hslab->span_lst);
 
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_get_select_hyper_nblocks() */
+} /* end H5S__get_select_hyper_nblocks() */
 
 
 /*--------------------------------------------------------------------------
@@ -1928,27 +1934,27 @@ H5Sget_select_hyper_nblocks(hid_t spaceid)
 
     /* Check args */
     if(NULL == (space = (H5S_t *)H5I_object_verify(spaceid, H5I_DATASPACE)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
     if(H5S_GET_SELECT_TYPE(space) != H5S_SEL_HYPERSLABS)
         HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a hyperslab selection")
     if(space->select.sel_info.hslab->unlim_dim >= 0)
         HGOTO_ERROR(H5E_DATASPACE, H5E_UNSUPPORTED, FAIL, "cannot get number of blocks for unlimited selection")
 
-    ret_value = (hssize_t)H5S_get_select_hyper_nblocks(space);
+    ret_value = (hssize_t)H5S__get_select_hyper_nblocks(space);
 
 done:
     FUNC_LEAVE_API(ret_value)
-}   /* H5Sget_select_hyper_nblocks() */
+} /* end H5Sget_select_hyper_nblocks() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_serial_size
+    H5S__hyper_serial_size
  PURPOSE
     Determine the number of bytes needed to store the serialized hyperslab
         selection information.
  USAGE
-    hssize_t H5S_hyper_serial_size(space)
+    hssize_t H5S__hyper_serial_size(space)
         H5S_t *space;             IN: Dataspace pointer to query
  RETURNS
     The number of bytes required on success, negative on an error.
@@ -1961,13 +1967,13 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static hssize_t
-H5S_hyper_serial_size(const H5S_t *space)
+H5S__hyper_serial_size(const H5S_t *space)
 {
     hsize_t block_count;       /* block counter for regular hyperslabs */
     unsigned u;                /* Counter */
     hssize_t ret_value = -1;   /* return value */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     HDassert(space);
 
@@ -1999,32 +2005,31 @@ H5S_hyper_serial_size(const H5S_t *space)
                 block_count *= space->select.sel_info.hslab->opt_diminfo[u].count;
         } /* end if */
         else
-            /* Spin through hyperslab spans, adding 8 * rank bytes for each
-             * block */
-            block_count = H5S_hyper_span_nblocks(space->select.sel_info.hslab->span_lst);
+            /* Spin through hyperslab spans, adding 8 * rank bytes for each block */
+            block_count = H5S__hyper_span_nblocks(space->select.sel_info.hslab->span_lst);
 
         H5_CHECK_OVERFLOW((8 * space->extent.rank * block_count), hsize_t, hssize_t);
         ret_value += (hssize_t)(8 * block_count * space->extent.rank);
     } /* end else */
 
     FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5S_hyper_serial_size() */
+} /* end H5S__hyper_serial_size() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_serialize_helper
+    H5S__hyper_serialize_helper
  PURPOSE
     Serialize the current selection into a user-provided buffer.
  USAGE
-    void H5S_hyper_serialize_helper(spans, start, end, rank, buf)
+    void H5S__hyper_serialize_helper(spans, start, end, rank, buf)
         H5S_hyper_span_info_t *spans;   IN: Hyperslab span tree to serialize
         hssize_t start[];       IN/OUT: Accumulated start points
         hssize_t end[];         IN/OUT: Accumulated end points
         hsize_t rank;           IN: Current rank looking at
         uint8 *buf;             OUT: Buffer to put serialized selection into
  RETURNS
-    <none>
+    None
  DESCRIPTION
     Serializes the current element selection into a buffer.  (Primarily for
     storing on disk).
@@ -2034,14 +2039,13 @@ H5S_hyper_serial_size(const H5S_t *space)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static void
-H5S_hyper_serialize_helper(const H5S_hyper_span_info_t *spans,
+H5S__hyper_serialize_helper(const H5S_hyper_span_info_t *spans,
         hsize_t *start, hsize_t *end, hsize_t rank, uint8_t **p)
 {
     H5S_hyper_span_t *curr;     /* Pointer to current hyperslab span */
     uint8_t *pp = (*p);         /* Local pointer for decoding */
-    hsize_t u;                  /* Index variable */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Sanity checks */
     HDassert(spans);
@@ -2051,29 +2055,31 @@ H5S_hyper_serialize_helper(const H5S_hyper_span_info_t *spans,
     HDassert(p && pp);
 
     /* Walk through the list of spans, recursing or outputing them */
-    curr=spans->head;
-    while(curr!=NULL) {
+    curr = spans->head;
+    while(curr != NULL) {
         /* Recurse if this node has down spans */
-        if(curr->down!=NULL) {
+        if(curr->down != NULL) {
             /* Add the starting and ending points for this span to the list */
-            start[rank]=curr->low;
-            end[rank]=curr->high;
+            start[rank] = curr->low;
+            end[rank] = curr->high;
 
             /* Recurse down to the next dimension */
-            H5S_hyper_serialize_helper(curr->down, start, end, rank + 1, &pp);
+            H5S__hyper_serialize_helper(curr->down, start, end, rank + 1, &pp);
         } /* end if */
         else {
+            hsize_t u;                  /* Index variable */
+
             /* Encode all the previous dimensions starting & ending points */
 
             /* Encode previous starting points */
-            for(u=0; u<rank; u++)
+            for(u = 0; u < rank; u++)
                 UINT32ENCODE(pp, (uint32_t)start[u]);
 
             /* Encode starting point for this span */
             UINT32ENCODE(pp, (uint32_t)curr->low);
 
             /* Encode previous ending points */
-            for(u=0; u<rank; u++)
+            for(u = 0; u < rank; u++)
                 UINT32ENCODE(pp, (uint32_t)end[u]);
 
             /* Encode starting point for this span */
@@ -2081,19 +2087,19 @@ H5S_hyper_serialize_helper(const H5S_hyper_span_info_t *spans,
         } /* end else */
 
         /* Advance to next node */
-        curr=curr->next;
+        curr = curr->next;
     } /* end while */
 
     /* Update encoding pointer */
     *p = pp;
 
     FUNC_LEAVE_NOAPI_VOID
-}   /* H5S_hyper_serialize_helper() */
+}   /* H5S__hyper_serialize_helper() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_serialize
+    H5S__hyper_serialize
  PURPOSE
     Serialize the current selection into a user-provided buffer.
  USAGE
@@ -2113,28 +2119,21 @@ H5S_hyper_serialize_helper(const H5S_hyper_span_info_t *spans,
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_serialize(const H5S_t *space, uint8_t **p)
+H5S__hyper_serialize(const H5S_t *space, uint8_t **p)
 {
-    const H5S_hyper_dim_t *diminfo;         /* Alias for dataspace's diminfo information */
-    uint8_t *pp = (*p);                     /* Local pointer for decoding */
-    hsize_t tmp_count[H5O_LAYOUT_NDIMS];    /* Temporary hyperslab counts */
-    hsize_t offset[H5O_LAYOUT_NDIMS];      /* Offset of element in dataspace */
-    hsize_t start[H5O_LAYOUT_NDIMS];   /* Location of start of hyperslab */
-    hsize_t end[H5O_LAYOUT_NDIMS];     /* Location of end of hyperslab */
-    hsize_t temp_off;            /* Offset in a given dimension */
-    uint8_t *lenp;          /* pointer to length location for later storage */
-    uint32_t len = 0;       /* number of bytes used */
+    uint8_t *pp;            /* Local pointer for decoding */
+    uint8_t *lenp;          /* Pointer to length location for later storage */
+    uint32_t len = 0;       /* Number of bytes used */
     uint32_t version;       /* Version number */
     uint8_t flags = 0;      /* Flags for message */
-    hsize_t block_count;    /* block counter for regular hyperslabs */
-    unsigned fast_dim;      /* Rank of the fastest changing dimension for the dataspace */
-    unsigned ndims;         /* Rank of the dataspace */
-    int done;               /* Whether we are done with the iteration */
+    hsize_t block_count;    /* Block counter for regular hyperslabs */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
+    /* Sanity checks */
     HDassert(space);
     HDassert(p);
+    pp = (*p);
     HDassert(pp);
 
     /* Calculate version */
@@ -2176,12 +2175,18 @@ H5S_hyper_serialize(const H5S_t *space, uint8_t **p)
     } /* end if */
     /* Check for a "regular" hyperslab selection */
     else if(space->select.sel_info.hslab->diminfo_valid) {
-        unsigned u;     /* Local counting variable */
+        const H5S_hyper_dim_t *diminfo;         /* Alias for dataspace's diminfo information */
+        hsize_t offset[H5O_LAYOUT_NDIMS];       /* Offset of element in dataspace */
+        hsize_t tmp_count[H5O_LAYOUT_NDIMS];    /* Temporary hyperslab counts */
+        unsigned fast_dim;      /* Rank of the fastest changing dimension for the dataspace */
+        unsigned ndims;         /* Rank of the dataspace */
+        unsigned u;             /* Local counting variable */
+        hbool_t done;           /* Whether we are done with the iteration */
 
-        /* Set some convienence values */
+        /* Set some convenience values */
         ndims = space->extent.rank;
         fast_dim = ndims - 1;
-        diminfo=space->select.sel_info.hslab->opt_diminfo;
+        diminfo = space->select.sel_info.hslab->opt_diminfo;
 
         /* Check each dimension */
         for(block_count = 1, u = 0; u < ndims; u++)
@@ -2190,7 +2195,7 @@ H5S_hyper_serialize(const H5S_t *space, uint8_t **p)
         /* Encode number of hyperslabs */
         H5_CHECK_OVERFLOW(block_count, hsize_t, uint32_t);
         UINT32ENCODE(pp, (uint32_t)block_count);
-        len+=4;
+        len += 4;
 
         /* Now serialize the information for the regular hyperslab */
 
@@ -2201,14 +2206,14 @@ H5S_hyper_serialize(const H5S_t *space, uint8_t **p)
         } /* end for */
 
         /* We're not done with the iteration */
-        done=0;
+        done = FALSE;
 
         /* Go iterate over the hyperslabs */
-        while(done==0) {
+        while(done == FALSE) {
             /* Iterate over the blocks in the fastest dimension */
-            while(tmp_count[fast_dim]>0) {
+            while(tmp_count[fast_dim] > 0) {
                 /* Add 8 bytes times the rank for each hyperslab selected */
-                len+=8*ndims;
+                len += 8 * ndims;
 
                 /* Encode hyperslab starting location */
                 for(u = 0; u < ndims; u++)
@@ -2230,11 +2235,11 @@ H5S_hyper_serialize(const H5S_t *space, uint8_t **p)
                 int temp_dim;           /* Temporary rank holder */
 
                 /* Reset the block counts */
-                tmp_count[fast_dim]=diminfo[fast_dim].count;
+                tmp_count[fast_dim] = diminfo[fast_dim].count;
 
                 /* Bubble up the decrement to the slower changing dimensions */
                 temp_dim = (int)fast_dim - 1;
-                while(temp_dim >= 0 && done == 0) {
+                while(temp_dim >= 0 && done == FALSE) {
                     /* Decrement the block count */
                     tmp_count[temp_dim]--;
 
@@ -2244,7 +2249,7 @@ H5S_hyper_serialize(const H5S_t *space, uint8_t **p)
 
                     /* Check for getting out of iterator */
                     if(temp_dim == 0)
-                        done = 1;
+                        done = TRUE;
 
                     /* Reset the block count in this dimension */
                     tmp_count[temp_dim] = diminfo[temp_dim].count;
@@ -2257,25 +2262,26 @@ H5S_hyper_serialize(const H5S_t *space, uint8_t **p)
                 break;  /* Break out now, for 1-D selections */
 
             /* Re-compute offset array */
-            for(u = 0; u < ndims; u++) {
-                temp_off = diminfo[u].start + diminfo[u].stride * (diminfo[u].count - tmp_count[u]);
-                offset[u] = temp_off;
-            } /* end for */
+            for(u = 0; u < ndims; u++)
+                offset[u] = diminfo[u].start + diminfo[u].stride * (diminfo[u].count - tmp_count[u]);
         } /* end while */
     } /* end if */
     else {
+        hsize_t start[H5O_LAYOUT_NDIMS];   /* Location of start of hyperslab */
+        hsize_t end[H5O_LAYOUT_NDIMS];     /* Location of end of hyperslab */
+
         /* Encode number of hyperslabs */
-        block_count = H5S_hyper_span_nblocks(space->select.sel_info.hslab->span_lst);
+        block_count = H5S__hyper_span_nblocks(space->select.sel_info.hslab->span_lst);
         H5_CHECK_OVERFLOW(block_count, hsize_t, uint32_t);
         UINT32ENCODE(pp, (uint32_t)block_count);
-        len+=4;
+        len += 4;
 
         /* Add 8 bytes times the rank for each hyperslab selected */
         H5_CHECK_OVERFLOW((8 * space->extent.rank * block_count), hsize_t, size_t);
         len += (uint32_t)(8 * space->extent.rank * block_count);
 
         /* Encode each hyperslab in selection */
-        H5S_hyper_serialize_helper(space->select.sel_info.hslab->span_lst, start, end, (hsize_t)0, &pp);
+        H5S__hyper_serialize_helper(space->select.sel_info.hslab->span_lst, start, end, (hsize_t)0, &pp);
     } /* end else */
 
     /* Encode length */
@@ -2285,16 +2291,16 @@ H5S_hyper_serialize(const H5S_t *space, uint8_t **p)
     *p = pp;
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_hyper_serialize() */
+} /* end H5S__hyper_serialize() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_deserialize
+    H5S__hyper_deserialize
  PURPOSE
     Deserialize the current selection from a user-provided buffer.
  USAGE
-    herr_t H5S_hyper_deserialize(space, p)
+    herr_t H5S__hyper_deserialize(space, p)
         H5S_t *space;           IN/OUT: Dataspace pointer to place
                                 selection into
         uint32_t version        IN: Selection version
@@ -2313,30 +2319,22 @@ H5S_hyper_serialize(const H5S_t *space, uint8_t **p)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t flags,
+H5S__hyper_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t flags,
     const uint8_t **p)
 {
-    unsigned rank;           	/* rank of points */
-    const uint8_t *pp = (*p);   /* Local pointer for decoding */
-    size_t num_elem=0;      	/* number of elements in selection */
-    hsize_t start[H5O_LAYOUT_NDIMS];	/* hyperslab start information */
-    hsize_t end[H5O_LAYOUT_NDIMS];	/* hyperslab end information */
-    hsize_t stride[H5O_LAYOUT_NDIMS];   /* hyperslab stride information */
-    hsize_t count[H5O_LAYOUT_NDIMS];    /* hyperslab count information */
-    hsize_t block[H5O_LAYOUT_NDIMS];    /* hyperslab block information */
-    hsize_t *tstart=NULL;	/* temporary hyperslab pointers */
-    hsize_t *tend=NULL;		/* temporary hyperslab pointers */
-    hsize_t *tstride=NULL;	/* temporary hyperslab pointers */
-    hsize_t *tcount=NULL;	/* temporary hyperslab pointers */
-    hsize_t *tblock=NULL;	/* temporary hyperslab pointers */
-    unsigned i,j;              	/* local counting variables */
-    herr_t ret_value=FAIL;  	/* return value */
+    unsigned rank;           	/* Rank of points */
+    const uint8_t *pp;          /* Local pointer for decoding */
+    hsize_t start[H5O_LAYOUT_NDIMS];	/* Hyperslab start information */
+    hsize_t block[H5O_LAYOUT_NDIMS];    /* Hyperslab block information */
+    unsigned u;             	/* Local counting variable */
+    herr_t ret_value = FAIL;  	/* Return value */
 
-    FUNC_ENTER_NOAPI(FAIL)
+    FUNC_ENTER_STATIC
 
     /* Check args */
     HDassert(space);
     HDassert(p);
+    pp = (*p);
     HDassert(pp);
 
     /* Deserialize slabs to select */
@@ -2345,49 +2343,59 @@ H5S_hyper_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t fla
 
     /* If there is an unlimited dimension, only encode opt_unlim_diminfo */
     if(flags & H5S_SELECT_FLAG_UNLIM) {
+        hsize_t stride[H5O_LAYOUT_NDIMS];	/* Hyperslab stride information */
+        hsize_t count[H5O_LAYOUT_NDIMS];	/* Hyperslab count information */
+
+        /* Sanity checks */
         HDassert(H5S_UNLIMITED == HSIZE_UNDEF);
         HDassert(version >= 2);
 
         /* Iterate over dimensions */
-        for(i = 0; i < space->extent.rank; i++) {
+        for(u = 0; u < rank; u++) {
             /* Decode start/stride/block/count */
-            UINT64DECODE(pp, start[i]);
-            UINT64DECODE(pp, stride[i]);
-            UINT64DECODE(pp, count[i]);
-            UINT64DECODE(pp, block[i]);
+            UINT64DECODE(pp, start[u]);
+            UINT64DECODE(pp, stride[u]);
+            UINT64DECODE(pp, count[u]);
+            UINT64DECODE(pp, block[u]);
         } /* end for */
 
         /* Select the hyperslab to the current selection */
         if((ret_value = H5S_select_hyperslab(space, H5S_SELECT_SET, start, stride, count, block)) < 0)
-            HGOTO_ERROR(H5E_DATASPACE, H5E_CANTDELETE, FAIL, "can't change selection")
+            HGOTO_ERROR(H5E_DATASPACE, H5E_CANTSET, FAIL, "can't change selection")
     } /* end if */
     else {
-        /* decode the number of points */
-        UINT32DECODE(pp,num_elem);
+        const hsize_t *stride;  /* Hyperslab stride information */
+        const hsize_t *count;   /* Hyperslab count information */
+        hsize_t end[H5O_LAYOUT_NDIMS];	/* Hyperslab end information */
+        hsize_t *tstart;	/* Temporary hyperslab pointers */
+        hsize_t *tend;		/* Temporary hyperslab pointers */
+        hsize_t *tblock;	/* Temporary hyperslab pointers */
+        size_t num_elem;      	/* Number of elements in selection */
+        unsigned v;            	/* Local counting variable */
+
+        /* Decode the number of points */
+        UINT32DECODE(pp, num_elem);
 
         /* Set the count & stride for all blocks */
-        for(tcount = count, tstride = stride, j = 0; j < rank; j++, tstride++, tcount++) {
-            *tcount=1;
-            *tstride=1;
-        } /* end for */
+        stride = count = H5S_hyper_ones_g;
 
         /* Retrieve the coordinates from the buffer */
-        for(i = 0; i < num_elem; i++) {
+        for(u = 0; u < num_elem; u++) {
             /* Decode the starting points */
-            for(tstart=start,j=0; j<rank; j++,tstart++)
+            for(tstart = start, v = 0; v < rank; v++, tstart++)
                 UINT32DECODE(pp, *tstart);
 
             /* Decode the ending points */
-            for(tend = end, j = 0; j < rank; j++, tend++)
+            for(tend = end, v = 0; v < rank; v++, tend++)
                 UINT32DECODE(pp, *tend);
 
             /* Change the ending points into blocks */
-            for(tblock=block,tstart=start,tend=end,j=0; j<rank; j++,tstart++,tend++,tblock++)
-                *tblock=(*tend-*tstart)+1;
+            for(tblock = block, tstart = start, tend = end, v = 0; v < rank; v++, tstart++, tend++, tblock++)
+                *tblock = (*tend - *tstart) + 1;
 
             /* Select or add the hyperslab to the current selection */
-            if((ret_value=H5S_select_hyperslab(space,(i==0 ? H5S_SELECT_SET : H5S_SELECT_OR),start,stride,count,block))<0)
-                HGOTO_ERROR(H5E_DATASPACE, H5E_CANTDELETE, FAIL, "can't change selection")
+            if((ret_value = H5S_select_hyperslab(space, (u == 0 ? H5S_SELECT_SET : H5S_SELECT_OR), start, stride, count, block)) < 0)
+                HGOTO_ERROR(H5E_DATASPACE, H5E_CANTSET, FAIL, "can't change selection")
         } /* end for */
     } /* end else */
 
@@ -2396,16 +2404,16 @@ H5S_hyper_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t fla
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_deserialize() */
+} /* end H5S__hyper_deserialize() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_span_blocklist
+    H5S__hyper_span_blocklist
  PURPOSE
     Get a list of hyperslab blocks currently selected
  USAGE
-    herr_t H5S_hyper_span_blocklist(spans, start, end, rank, startblock, numblocks, buf)
+    herr_t H5S__hyper_span_blocklist(spans, start, end, rank, startblock, numblocks, buf)
         H5S_hyper_span_info_t *spans;   IN: Dataspace pointer of selection to query
         hsize_t start[];       IN/OUT: Accumulated start points
         hsize_t end[];         IN/OUT: Accumulated end points
@@ -2433,13 +2441,15 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_span_blocklist(H5S_hyper_span_info_t *spans, hsize_t start[], hsize_t end[], hsize_t rank, hsize_t *startblock, hsize_t *numblocks, hsize_t **buf)
+H5S__hyper_span_blocklist(const H5S_hyper_span_info_t *spans, hsize_t start[],
+    hsize_t end[], hsize_t rank, hsize_t *startblock, hsize_t *numblocks,
+    hsize_t **buf)
 {
-    H5S_hyper_span_t *curr;     /* Pointer to current hyperslab span */
+    const H5S_hyper_span_t *curr;     /* Pointer to current hyperslab span */
     hsize_t u;                  /* Index variable */
     herr_t ret_value = SUCCEED; /* return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC
 
     /* Sanity checks */
     HDassert(spans);
@@ -2460,7 +2470,7 @@ H5S_hyper_span_blocklist(H5S_hyper_span_info_t *spans, hsize_t start[], hsize_t
             end[rank] = curr->high;
 
             /* Recurse down to the next dimension */
-            if(H5S_hyper_span_blocklist(curr->down, start, end, (rank + 1), startblock, numblocks, buf) < 0)
+            if(H5S__hyper_span_blocklist(curr->down, start, end, (rank + 1), startblock, numblocks, buf) < 0)
                 HGOTO_ERROR(H5E_INTERNAL, H5E_CANTFREE, FAIL, "failed to release hyperslab spans")
         } /* end if */
         else {
@@ -2500,16 +2510,16 @@ H5S_hyper_span_blocklist(H5S_hyper_span_info_t *spans, hsize_t start[], hsize_t
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_span_blocklist() */
+} /* end H5S__hyper_span_blocklist() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_get_select_hyper_blocklist
+    H5S__get_select_hyper_blocklist
  PURPOSE
     Get the list of hyperslab blocks currently selected
  USAGE
-    herr_t H5S_get_select_hyper_blocklist(space, startblock, numblocks, buf)
+    herr_t H5S__get_select_hyper_blocklist(space, startblock, numblocks, buf)
         H5S_t *space;           IN: Dataspace pointer of selection to query
         hsize_t startblock;     IN: Hyperslab block to start with
         hsize_t numblocks;      IN: Number of hyperslab blocks to get
@@ -2534,11 +2544,11 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_get_select_hyper_blocklist(H5S_t *space, hbool_t internal, hsize_t startblock, hsize_t numblocks, hsize_t *buf)
+H5S__get_select_hyper_blocklist(H5S_t *space, hbool_t internal, hsize_t startblock, hsize_t numblocks, hsize_t *buf)
 {
     herr_t ret_value = SUCCEED; /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     HDassert(space);
     HDassert(buf);
@@ -2661,11 +2671,11 @@ H5S_get_select_hyper_blocklist(H5S_t *space, hbool_t internal, hsize_t startbloc
         hsize_t start[H5O_LAYOUT_NDIMS];   /* Location of start of hyperslab */
         hsize_t end[H5O_LAYOUT_NDIMS];     /* Location of end of hyperslab */
 
-        ret_value = H5S_hyper_span_blocklist(space->select.sel_info.hslab->span_lst, start, end, (hsize_t)0, &startblock, &numblocks, &buf);
+        ret_value = H5S__hyper_span_blocklist(space->select.sel_info.hslab->span_lst, start, end, (hsize_t)0, &startblock, &numblocks, &buf);
     } /* end else */
 
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_get_select_hyper_blocklist() */
+} /* end H5S__get_select_hyper_blocklist() */
 
 
 /*--------------------------------------------------------------------------
@@ -2712,7 +2722,7 @@ H5Sget_select_hyper_blocklist(hid_t spaceid, hsize_t startblock,
     if(buf == NULL)
         HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid pointer")
     if(NULL == (space = (H5S_t *)H5I_object_verify(spaceid, H5I_DATASPACE)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
     if(H5S_GET_SELECT_TYPE(space)!=H5S_SEL_HYPERSLABS)
         HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a hyperslab selection")
     if(space->select.sel_info.hslab->unlim_dim >= 0)
@@ -2720,13 +2730,13 @@ H5Sget_select_hyper_blocklist(hid_t spaceid, hsize_t startblock,
 
     /* Go get the correct number of blocks */
     if(numblocks > 0)
-        ret_value = H5S_get_select_hyper_blocklist(space, 0, startblock, numblocks, buf);
+        ret_value = H5S__get_select_hyper_blocklist(space, 0, startblock, numblocks, buf);
     else
-        ret_value=SUCCEED;      /* Successfully got 0 blocks... */
+        ret_value = SUCCEED;      /* Successfully got 0 blocks... */
 
 done:
     FUNC_LEAVE_API(ret_value)
-}   /* H5Sget_select_hyper_blocklist() */
+} /* end H5Sget_select_hyper_blocklist() */
 
 
 /*--------------------------------------------------------------------------
@@ -2801,11 +2811,11 @@ done:
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_bounds
+    H5S__hyper_bounds
  PURPOSE
     Gets the bounding box containing the selection.
  USAGE
-    herr_t H5S_hyper_bounds(space, hsize_t *start, hsize_t *end)
+    herr_t H5S__hyper_bounds(space, hsize_t *start, hsize_t *end)
         H5S_t *space;           IN: Dataspace pointer of selection to query
         hsize_t *start;         OUT: Starting coordinate of bounding box
         hsize_t *end;           OUT: Opposite coordinate of bounding box
@@ -2826,14 +2836,15 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_bounds(const H5S_t *space, hsize_t *start, hsize_t *end)
+H5S__hyper_bounds(const H5S_t *space, hsize_t *start, hsize_t *end)
 {
     unsigned rank;              /* Dataspace rank */
     unsigned i;                 /* index variable */
     herr_t ret_value = SUCCEED; /* Return value */
 
-    FUNC_ENTER_NOAPI(FAIL)
+    FUNC_ENTER_STATIC
 
+    /* Sanity check */
     HDassert(space);
     HDassert(start);
     HDassert(end);
@@ -2872,16 +2883,16 @@ H5S_hyper_bounds(const H5S_t *space, hsize_t *start, hsize_t *end)
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_bounds() */
+} /* end H5S__hyper_bounds() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_offset
+    H5S__hyper_offset
  PURPOSE
     Gets the linear offset of the first element for the selection.
  USAGE
-    herr_t H5S_hyper_offset(space, offset)
+    herr_t H5S__hyper_offset(space, offset)
         const H5S_t *space;     IN: Dataspace pointer of selection to query
         hsize_t *offset;        OUT: Linear offset of first element in selection
  RETURNS
@@ -2896,7 +2907,7 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_offset(const H5S_t *space, hsize_t *offset)
+H5S__hyper_offset(const H5S_t *space, hsize_t *offset)
 {
     const hssize_t *sel_offset; /* Pointer to the selection's offset */
     const hsize_t *dim_size;    /* Pointer to a dataspace's extent */
@@ -2905,7 +2916,7 @@ H5S_hyper_offset(const H5S_t *space, hsize_t *offset)
     int i;                      /* index variable */
     herr_t ret_value = SUCCEED; /* Return value */
 
-    FUNC_ENTER_NOAPI(FAIL)
+    FUNC_ENTER_STATIC
 
     HDassert(space && space->extent.rank>0);
     HDassert(offset);
@@ -2980,7 +2991,7 @@ H5S_hyper_offset(const H5S_t *space, hsize_t *offset)
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_offset() */
+} /* end H5S__hyper_offset() */
 
 
 /*--------------------------------------------------------------------------
@@ -3012,11 +3023,11 @@ H5S__hyper_unlim_dim(const H5S_t *space)
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_num_elem_non_unlim
+    H5S__hyper_num_elem_non_unlim
  PURPOSE
     Return number of elements in the non-unlimited dimensions
  USAGE
-    herr_t H5S_hyper_num_elem_non_unlim(space,num_elem_non_unlim)
+    herr_t H5S__hyper_num_elem_non_unlim(space,num_elem_non_unlim)
         H5S_t *space;           IN: Dataspace pointer to check
         hsize_t *num_elem_non_unlim; OUT: Number of elements in the non-unlimited dimensions
  RETURNS
@@ -3031,11 +3042,11 @@ H5S__hyper_unlim_dim(const H5S_t *space)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_num_elem_non_unlim(const H5S_t *space, hsize_t *num_elem_non_unlim)
+H5S__hyper_num_elem_non_unlim(const H5S_t *space, hsize_t *num_elem_non_unlim)
 {
     herr_t ret_value = SUCCEED;
 
-    FUNC_ENTER_NOAPI(FAIL)
+    FUNC_ENTER_STATIC
 
     /* Sanity check */
     HDassert(space);
@@ -3049,16 +3060,16 @@ H5S_hyper_num_elem_non_unlim(const H5S_t *space, hsize_t *num_elem_non_unlim)
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5S_hyper_num_elem_non_unlim() */
+} /* end H5S__hyper_num_elem_non_unlim() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_is_contiguous
+    H5S__hyper_is_contiguous
  PURPOSE
     Check if a hyperslab selection is contiguous within the dataspace extent.
  USAGE
-    htri_t H5S_hyper_is_contiguous(space)
+    htri_t H5S__hyper_is_contiguous(space)
         H5S_t *space;           IN: Dataspace pointer to check
  RETURNS
     TRUE/FALSE/FAIL
@@ -3071,14 +3082,14 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static htri_t
-H5S_hyper_is_contiguous(const H5S_t *space)
+H5S__hyper_is_contiguous(const H5S_t *space)
 {
-    unsigned small_contiguous,      /* Flag for small contiguous block */
+    hbool_t small_contiguous,       /* Flag for small contiguous block */
         large_contiguous;           /* Flag for large contiguous block */
     unsigned u;                     /* index variable */
     htri_t ret_value = FALSE;       /* Return value */
 
-    FUNC_ENTER_NOAPI(FAIL)
+    FUNC_ENTER_STATIC_NOERR
 
     HDassert(space);
 
@@ -3100,31 +3111,31 @@ H5S_hyper_is_contiguous(const H5S_t *space)
          */
 
         /* Initialize flags */
-        large_contiguous=TRUE;	/* assume true and reset if the dimensions don't match */
-        small_contiguous=FALSE;	/* assume false initially */
+        large_contiguous = TRUE;	/* assume true and reset if the dimensions don't match */
+        small_contiguous = FALSE;	/* assume false initially */
 
         /* Check for a "large contigous" block */
-        for(u=0; u<space->extent.rank; u++) {
-            if(diminfo[u].count>1) {
-                large_contiguous=FALSE;
+        for(u = 0; u < space->extent.rank; u++) {
+            if(diminfo[u].count > 1) {
+                large_contiguous = FALSE;
                 break;
             } /* end if */
-            if(u>0 && diminfo[u].block!=space->extent.size[u]) {
-                large_contiguous=FALSE;
+            if(u > 0 && diminfo[u].block != space->extent.size[u]) {
+                large_contiguous = FALSE;
                 break;
             } /* end if */
         } /* end for */
 
         /* If we didn't find a large contiguous block, check for a small one */
-        if(large_contiguous==FALSE) {
-            small_contiguous=TRUE;
-            for(u=0; u<space->extent.rank; u++) {
-                if(diminfo[u].count>1) {
-                    small_contiguous=FALSE;
+        if(!large_contiguous) {
+            small_contiguous = TRUE;
+            for(u = 0; u < space->extent.rank; u++) {
+                if(diminfo[u].count > 1) {
+                    small_contiguous = FALSE;
                     break;
                 } /* end if */
-                if(u<(space->extent.rank-1) && diminfo[u].block!=1) {
-                    small_contiguous=FALSE;
+                if(u < (space->extent.rank - 1) && diminfo[u].block != 1) {
+                    small_contiguous = FALSE;
                     break;
                 } /* end if */
             } /* end for */
@@ -3132,7 +3143,7 @@ H5S_hyper_is_contiguous(const H5S_t *space)
 
         /* Indicate true if it's either a large or small contiguous block */
         if(large_contiguous || small_contiguous)
-            ret_value=TRUE;
+            ret_value = TRUE;
     } /* end if */
     else {
         H5S_hyper_span_info_t *spans;   /* Hyperslab span info node */
@@ -3146,42 +3157,42 @@ H5S_hyper_is_contiguous(const H5S_t *space)
          * block size must be 1 in all but the fastest changing dimension).
          */
         /* Initialize flags */
-        large_contiguous=TRUE;	/* assume true and reset if the dimensions don't match */
-        small_contiguous=FALSE;	/* assume false initially */
+        large_contiguous = TRUE;	/* assume true and reset if the dimensions don't match */
+        small_contiguous = FALSE;	/* assume false initially */
 
         /* Get information for slowest changing information */
-        spans=space->select.sel_info.hslab->span_lst;
-        span=spans->head;
+        spans = space->select.sel_info.hslab->span_lst;
+        span = spans->head;
 
         /* If there are multiple spans in the slowest changing dimension, the selection isn't contiguous */
-        if(span->next!=NULL)
-            large_contiguous=FALSE;
+        if(span->next != NULL)
+            large_contiguous = FALSE;
         else {
             /* Now check the rest of the dimensions */
-            if(span->down!=NULL) {
-                u=1;    /* Current dimension working on */
+            if(span->down != NULL) {
+                u = 1;    /* Current dimension working on */
 
                 /* Get the span information for the next fastest dimension */
-                spans=span->down;
+                spans = span->down;
 
                 /* Cycle down the spans until we run out of down spans or find a non-contiguous span */
-                while(spans!=NULL) {
-                    span=spans->head;
+                while(spans != NULL) {
+                    span = spans->head;
 
                     /* Check that this is the only span and it spans the entire dimension */
-                    if(span->next!=NULL) {
-                        large_contiguous=FALSE;
+                    if(span->next != NULL) {
+                        large_contiguous = FALSE;
                         break;
                     } /* end if */
                     else {
                         /* If this span doesn't cover the entire dimension, then this selection isn't contiguous */
-                        if(((span->high-span->low)+1)!=space->extent.size[u]) {
-                            large_contiguous=FALSE;
+                        if(((span->high - span->low) + 1) != space->extent.size[u]) {
+                            large_contiguous = FALSE;
                             break;
                         } /* end if */
                         else {
                             /* Walk down to the next span */
-                            spans=span->down;
+                            spans = span->down;
 
                             /* Increment dimension */
                             u++;
@@ -3192,34 +3203,34 @@ H5S_hyper_is_contiguous(const H5S_t *space)
         } /* end else */
 
         /* If we didn't find a large contiguous block, check for a small one */
-        if(large_contiguous==FALSE) {
-            small_contiguous=TRUE;
+        if(!large_contiguous) {
+            small_contiguous = TRUE;
 
             /* Get information for slowest changing information */
-            spans=space->select.sel_info.hslab->span_lst;
-            span=spans->head;
+            spans = space->select.sel_info.hslab->span_lst;
+            span = spans->head;
 
             /* Current dimension working on */
-            u=0;
+            u = 0;
 
             /* Cycle down the spans until we run out of down spans or find a non-contiguous span */
-            while(spans!=NULL) {
-                span=spans->head;
+            while(spans != NULL) {
+                span = spans->head;
 
                 /* Check that this is the only span and it spans the entire dimension */
-                if(span->next!=NULL) {
-                    small_contiguous=FALSE;
+                if(span->next != NULL) {
+                    small_contiguous = FALSE;
                     break;
                 } /* end if */
                 else {
                     /* If this span doesn't cover the entire dimension, then this selection isn't contiguous */
-                    if(u<(space->extent.rank-1) && ((span->high-span->low)+1)!=1) {
-                        small_contiguous=FALSE;
+                    if(u < (space->extent.rank - 1) && ((span->high-span->low) + 1) != 1) {
+                        small_contiguous = FALSE;
                         break;
                     } /* end if */
                     else {
                         /* Walk down to the next span */
-                        spans=span->down;
+                        spans = span->down;
 
                         /* Increment dimension */
                         u++;
@@ -3230,21 +3241,20 @@ H5S_hyper_is_contiguous(const H5S_t *space)
 
         /* Indicate true if it's either a large or small contiguous block */
         if(large_contiguous || small_contiguous)
-            ret_value=TRUE;
+            ret_value = TRUE;
     } /* end else */
 
-done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_is_contiguous() */
+} /* end H5S__hyper_is_contiguous() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_is_single
+    H5S__hyper_is_single
  PURPOSE
     Check if a hyperslab selection is a single block within the dataspace extent.
  USAGE
-    htri_t H5S_hyper_is_single(space)
+    htri_t H5S__hyper_is_single(space)
         H5S_t *space;           IN: Dataspace pointer to check
  RETURNS
     TRUE/FALSE/FAIL
@@ -3257,62 +3267,65 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static htri_t
-H5S_hyper_is_single(const H5S_t *space)
+H5S__hyper_is_single(const H5S_t *space)
 {
-    H5S_hyper_span_info_t *spans;   /* Hyperslab span info node */
-    H5S_hyper_span_t *span;         /* Hyperslab span node */
-    unsigned u;                     /* index variable */
-    htri_t ret_value=TRUE;         /* return value */
+    htri_t ret_value = TRUE;        /* return value */
 
-    FUNC_ENTER_NOAPI(FAIL)
+    FUNC_ENTER_STATIC_NOERR
 
     HDassert(space);
 
     /* Check for a "single" hyperslab selection */
     if(space->select.sel_info.hslab->diminfo_valid) {
+        unsigned u;                     /* index variable */
+
         /*
          * For a regular hyperslab to be single, it must have only one
          * block (i.e. count==1 in all dimensions)
          */
 
         /* Check for a single block */
-        for(u=0; u<space->extent.rank; u++) {
-            if(space->select.sel_info.hslab->opt_diminfo[u].count>1)
+        for(u = 0; u < space->extent.rank; u++) {
+            if(space->select.sel_info.hslab->opt_diminfo[u].count > 1)
                 HGOTO_DONE(FALSE)
         } /* end for */
     } /* end if */
     else {
+        H5S_hyper_span_info_t *spans;   /* Hyperslab span info node */
+
         /*
          * For a region to be single, it must have only one block
          */
         /* Get information for slowest changing information */
-        spans=space->select.sel_info.hslab->span_lst;
+        spans = space->select.sel_info.hslab->span_lst;
 
         /* Cycle down the spans until we run out of down spans or find a non-contiguous span */
-        while(spans!=NULL) {
-            span=spans->head;
+        while(spans != NULL) {
+            H5S_hyper_span_t *span;         /* Hyperslab span node */
+
+            span = spans->head;
 
             /* Check that this is the only span and it spans the entire dimension */
-            if(span->next!=NULL)
+            if(span->next != NULL)
                 HGOTO_DONE(FALSE)
             else
                 /* Walk down to the next span */
-                spans=span->down;
+                spans = span->down;
         } /* end while */
     } /* end else */
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_is_single() */
+} /* end H5S__hyper_is_single() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_is_regular
+    H5S__hyper_is_regular
  PURPOSE
     Check if a hyperslab selection is "regular"
  USAGE
-    htri_t H5S_hyper_is_regular(space)
+    htri_t H5S__hyper_is_regular(space)
         const H5S_t *space;     IN: Dataspace pointer to check
  RETURNS
     TRUE/FALSE/FAIL
@@ -3327,32 +3340,32 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static htri_t
-H5S_hyper_is_regular(const H5S_t *space)
+H5S__hyper_is_regular(const H5S_t *space)
 {
     htri_t ret_value = FAIL;    /* return value */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(space);
 
     /* Only simple check for regular hyperslabs for now... */
     if(space->select.sel_info.hslab->diminfo_valid)
-        ret_value=TRUE;
+        ret_value = TRUE;
     else
-        ret_value=FALSE;
+        ret_value = FALSE;
 
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_is_regular() */
+} /* end H5S__hyper_is_regular() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_release
+    H5S__hyper_release
  PURPOSE
     Release hyperslab selection information for a dataspace
  USAGE
-    herr_t H5S_hyper_release(space)
+    herr_t H5S__hyper_release(space)
         H5S_t *space;       IN: Pointer to dataspace
  RETURNS
     Non-negative on success/Negative on failure
@@ -3365,15 +3378,15 @@ H5S_hyper_is_regular(const H5S_t *space)
  * 	Robb Matzke, 1998-08-25
  *	The fields which are freed are set to NULL to prevent them from being
  *	freed again later.  This fixes some allocation problems where
- *	changing the hyperslab selection of one data space causes a core dump
- *	when closing some other data space.
+ *	changing the hyperslab selection of one dataspace causes a core dump
+ *	when closing some other dataspace.
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_release(H5S_t *space)
+H5S__hyper_release(H5S_t *space)
 {
     herr_t ret_value = SUCCEED;
 
-    FUNC_ENTER_NOAPI(FAIL)
+    FUNC_ENTER_STATIC
 
     /* Check args */
     HDassert(space && H5S_SEL_HYPERSLABS == H5S_GET_SELECT_TYPE(space));
@@ -3383,10 +3396,9 @@ H5S_hyper_release(H5S_t *space)
 
     /* Release irregular hyperslab information */
     if(space->select.sel_info.hslab) {
-        if(space->select.sel_info.hslab->span_lst != NULL) {
-            if(H5S_hyper_free_span_info(space->select.sel_info.hslab->span_lst) < 0)
+        if(space->select.sel_info.hslab->span_lst != NULL)
+            if(H5S__hyper_free_span_info(space->select.sel_info.hslab->span_lst) < 0)
                 HGOTO_ERROR(H5E_INTERNAL, H5E_CANTFREE, FAIL, "failed to release hyperslab spans")
-        } /* end if */
 
         /* Release space for the hyperslab selection information */
         space->select.sel_info.hslab = H5FL_FREE(H5S_hyper_sel_t, space->select.sel_info.hslab);
@@ -3394,16 +3406,16 @@ H5S_hyper_release(H5S_t *space)
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_release() */
+} /* end H5S__hyper_release() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_recover_span
+    H5S__hyper_recover_span
  PURPOSE
     Recover a generated span, if appropriate
  USAGE
-    herr_t H5S_hyper_recover_span(recover, curr_span, next_span)
+    herr_t H5S__hyper_recover_span(recover, curr_span, next_span)
         unsigned *recover;                 IN/OUT: Pointer recover flag
         H5S_hyper_span_t **curr_span;   IN/OUT: Pointer to current span in list
         H5S_hyper_span_t *next_span;    IN: Pointer to next span
@@ -3418,33 +3430,33 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_recover_span (unsigned *recover, H5S_hyper_span_t **curr_span, H5S_hyper_span_t *next_span)
+H5S__hyper_recover_span(hbool_t *recover, H5S_hyper_span_t **curr_span, H5S_hyper_span_t *next_span)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     HDassert(recover);
     HDassert(curr_span);
 
     /* Check if the span should be recovered */
     if(*recover) {
-        H5S_hyper_free_span(*curr_span);
-        *recover=0;
+        H5S__hyper_free_span(*curr_span);
+        *recover = FALSE;
     } /* end if */
 
     /* Set the current span to next span */
-    *curr_span=next_span;
+    *curr_span = next_span;
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_hyper_recover_span() */
+}   /* H5S__hyper_recover_span() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_coord_to_span
+    H5S__hyper_coord_to_span
  PURPOSE
     Create a span tree for a single element
  USAGE
-    H5S_hyper_span_t *H5S_hyper_coord_to_span(rank, coords)
+    H5S_hyper_span_t *H5S__hyper_coord_to_span(rank, coords)
         unsigned rank;                  IN: Number of dimensions of coordinate
         hsize_t *coords;               IN: Location of element
  RETURNS
@@ -3457,54 +3469,47 @@ H5S_hyper_recover_span (unsigned *recover, H5S_hyper_span_t **curr_span, H5S_hyp
  REVISION LOG
 --------------------------------------------------------------------------*/
 static H5S_hyper_span_t *
-H5S_hyper_coord_to_span(unsigned rank, hsize_t *coords)
+H5S__hyper_coord_to_span(unsigned rank, const hsize_t *coords)
 {
     H5S_hyper_span_t *new_span;         /* Pointer to new span tree for coordinate */
-    H5S_hyper_span_info_t *down=NULL;   /* Pointer to new span tree for next level down */
-    H5S_hyper_span_t *ret_value=NULL;   /* Return value */
+    H5S_hyper_span_info_t *down = NULL; /* Pointer to new span tree for next level down */
+    H5S_hyper_span_t *ret_value = NULL; /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC
 
     HDassert(rank > 0);
     HDassert(coords);
 
     /* Search for location to insert new element in tree */
-    if(rank>1) {
+    if(rank > 1) {
         /* Allocate a span info node */
-        if((down = H5FL_MALLOC(H5S_hyper_span_info_t))==NULL)
-            HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "can't allocate hyperslab span")
-
-        /* Set the reference count */
-        down->count=0;
+        if(NULL == (down = H5FL_CALLOC(H5S_hyper_span_info_t)))
+            HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, NULL, "can't allocate hyperslab span")
 
-        /* Reset the scratch pad space */
-        down->scratch=0;
 
         /* Build span tree for coordinates below this one */
-        if((down->head=H5S_hyper_coord_to_span(rank-1,&coords[1]))==NULL)
-            HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "can't allocate hyperslab span")
+        if(NULL == (down->head = H5S__hyper_coord_to_span(rank - 1, &coords[1])))
+            HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, NULL, "can't allocate hyperslab span")
     } /* end if */
 
     /* Build span for this coordinate */
-    if((new_span = H5S_hyper_new_span(coords[0],coords[0],down,NULL))==NULL)
-        HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "can't allocate hyperslab span")
+    if(NULL == (new_span = H5S__hyper_new_span(coords[0], coords[0], down, NULL)))
+        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, NULL, "can't allocate hyperslab span")
 
     /* Set return value */
-    ret_value=new_span;
+    ret_value = new_span;
 
 done:
-    if(ret_value==NULL) {
-        if(down!=NULL)
-            H5S_hyper_free_span_info(down);
-    } /* end if */
+    if(ret_value == NULL && down != NULL)
+        H5S__hyper_free_span_info(down);
 
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_coord_to_span() */
+} /* end H5S__hyper_coord_to_span() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_add_span_element_helper
+    H5S__hyper_add_span_element_helper
  PURPOSE
     Add a single elment to a span tree
  USAGE
@@ -3523,17 +3528,19 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_add_span_element_helper(H5S_hyper_span_info_t *span_tree, unsigned rank, hsize_t *coords)
+H5S__hyper_add_span_element_helper(H5S_hyper_span_info_t *span_tree,
+    unsigned rank, const hsize_t *coords)
 {
     H5S_hyper_span_info_t *tspan_info;  /* Temporary pointer to span info */
     H5S_hyper_span_info_t *prev_span_info;  /* Pointer to span info for level above current position */
     H5S_hyper_span_t *tmp_span;         /* Temporary pointer to a span */
     H5S_hyper_span_t *tmp2_span;        /* Another temporary pointer to a span */
     H5S_hyper_span_t *new_span;         /* New span created for element */
-    herr_t ret_value=SUCCEED;           /* Return value */
+    herr_t ret_value = SUCCEED;         /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC
 
+    /* Sanity check */
     HDassert(span_tree);
     HDassert(rank > 0);
     HDassert(coords);
@@ -3581,11 +3588,11 @@ H5S_hyper_add_span_element_helper(H5S_hyper_span_info_t *span_tree, unsigned ran
          */
         tmp2_span=tspan_info->head;
         while(tmp2_span!=tmp_span) {
-            if(H5S_hyper_cmp_spans(tmp2_span->down,tmp_span->down)==TRUE) {
+            if(H5S__hyper_cmp_spans(tmp2_span->down,tmp_span->down)==TRUE) {
                 /* Check for merging into previous span */
                 if(tmp2_span->high+1==tmp_span->low) {
                     /* Release last span created */
-                    H5S_hyper_free_span(tmp_span);
+                    H5S__hyper_free_span(tmp_span);
 
                     /* Increase size of previous span */
                     tmp2_span->high++;
@@ -3597,7 +3604,7 @@ H5S_hyper_add_span_element_helper(H5S_hyper_span_info_t *span_tree, unsigned ran
                 /* Span is disjoint, but has the same "down tree" selection */
                 else {
                     /* Release "down tree" information */
-                    H5S_hyper_free_span_info(tmp_span->down);
+                    H5S__hyper_free_span_info(tmp_span->down);
 
                     /* Point at earlier span's "down tree" */
                     tmp_span->down=tmp2_span->down;
@@ -3615,7 +3622,7 @@ H5S_hyper_add_span_element_helper(H5S_hyper_span_info_t *span_tree, unsigned ran
         } /* end while */
 
         /* Make span tree for current coordinates */
-        if((new_span=H5S_hyper_coord_to_span(rank,coords))==NULL)
+        if(NULL == (new_span = H5S__hyper_coord_to_span(rank, coords)))
             HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't allocate hyperslab span")
 
         /* Add new span tree as span */
@@ -3648,11 +3655,11 @@ H5S_hyper_add_span_element_helper(H5S_hyper_span_info_t *span_tree, unsigned ran
                 tmp2_span=prev_span_info->head;
                 tmp_span=(H5S_hyper_span_t *)prev_span_info->scratch;
                 while(tmp2_span!=tmp_span) {
-                    if(H5S_hyper_cmp_spans(tmp2_span->down,tmp_span->down)==TRUE) {
+                    if(H5S__hyper_cmp_spans(tmp2_span->down,tmp_span->down)==TRUE) {
                         /* Check for merging into previous span */
                         if(tmp2_span->high+1==tmp_span->low) {
                             /* Release last span created */
-                            H5S_hyper_free_span(tmp_span);
+                            H5S__hyper_free_span(tmp_span);
 
                             /* Increase size of previous span */
                             tmp2_span->high++;
@@ -3665,7 +3672,7 @@ H5S_hyper_add_span_element_helper(H5S_hyper_span_info_t *span_tree, unsigned ran
                         /* Span is disjoint, but has the same "down tree" selection */
                         else {
                             /* Release "down tree" information */
-                            H5S_hyper_free_span_info(tmp_span->down);
+                            H5S__hyper_free_span_info(tmp_span->down);
 
                             /* Point at earlier span's "down tree" */
                             tmp_span->down=tmp2_span->down;
@@ -3684,7 +3691,7 @@ H5S_hyper_add_span_element_helper(H5S_hyper_span_info_t *span_tree, unsigned ran
             } /* end if */
         } /* end if */
         else {
-            if((new_span = H5S_hyper_new_span(coords[0],coords[0],NULL,NULL))==NULL)
+            if(NULL == (new_span = H5S__hyper_new_span(coords[0], coords[0], NULL, NULL)))
                 HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't allocate hyperslab span")
 
             /* Add new span tree as span */
@@ -3695,13 +3702,13 @@ H5S_hyper_add_span_element_helper(H5S_hyper_span_info_t *span_tree, unsigned ran
             tspan_info->scratch=(H5S_hyper_span_info_t *)new_span;
 
             /* Set the proper 'pstride' for new span */
-            new_span->pstride=new_span->low-tmp_span->low;
+            new_span->pstride = new_span->low - tmp_span->low;
         } /* end else */
     } /* end else */
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_add_span_element_helper() */
+} /* end H5S__hyper_add_span_element_helper() */
 
 
 /*--------------------------------------------------------------------------
@@ -3725,36 +3732,34 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 herr_t
-H5S_hyper_add_span_element(H5S_t *space, unsigned rank, hsize_t *coords)
+H5S_hyper_add_span_element(H5S_t *space, unsigned rank, const hsize_t *coords)
 {
     H5S_hyper_span_info_t *head = NULL;    /* Pointer to new head of span tree */
     herr_t      ret_value = SUCCEED;       /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_NOAPI(FAIL)
 
     HDassert(space);
     HDassert(rank > 0);
     HDassert(coords);
+    HDassert(space->extent.rank == rank);
 
     /* Check if this is the first element in the selection */
     if(NULL == space->select.sel_info.hslab) {
         /* Allocate a span info node */
-        if(NULL == (head = H5FL_MALLOC(H5S_hyper_span_info_t)))
-            HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't allocate hyperslab span")
+        if(NULL == (head = H5FL_CALLOC(H5S_hyper_span_info_t)))
+            HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, FAIL, "can't allocate hyperslab span info")
 
         /* Set the reference count */
         head->count = 1;
 
-        /* Reset the scratch pad space */
-        head->scratch = 0;
-
         /* Build span tree for this coordinate */
-        if(NULL == (head->head = H5S_hyper_coord_to_span(rank, coords)))
-            HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't allocate hyperslab span")
+        if(NULL == (head->head = H5S__hyper_coord_to_span(rank, coords)))
+            HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, FAIL, "can't allocate hyperslab spans for coordinate")
 
         /* Allocate selection info */
         if(NULL == (space->select.sel_info.hslab = H5FL_MALLOC(H5S_hyper_sel_t)))
-            HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't allocate hyperslab info")
+            HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, FAIL, "can't allocate hyperslab selection")
 
         /* Set the selection to the new span tree */
         space->select.sel_info.hslab->span_lst = head;
@@ -3772,8 +3777,8 @@ H5S_hyper_add_span_element(H5S_t *space, unsigned rank, hsize_t *coords)
         space->select.num_elem = 1;
     } /* end if */
     else {
-        if(H5S_hyper_add_span_element_helper(space->select.sel_info.hslab->span_lst, rank, coords) < 0)
-            HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't allocate hyperslab span")
+        if(H5S__hyper_add_span_element_helper(space->select.sel_info.hslab->span_lst, rank, coords) < 0)
+            HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't insert coordinate into span tree")
 
         /* Increment # of elements in selection */
         space->select.num_elem++;
@@ -3782,10 +3787,10 @@ H5S_hyper_add_span_element(H5S_t *space, unsigned rank, hsize_t *coords)
 done:
     if(ret_value < 0)
         if(head)
-            H5S_hyper_free_span_info(head);
+            H5S__hyper_free_span_info(head);
 
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_add_span_element() */
+} /* end H5S_hyper_add_span_element() */
 
 
 /*--------------------------------------------------------------------------
@@ -3809,17 +3814,20 @@ done:
 herr_t
 H5S_hyper_reset_scratch(H5S_t *space)
 {
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    herr_t      ret_value = SUCCEED;       /* Return value */
+
+    FUNC_ENTER_NOAPI(FAIL)
 
     HDassert(space);
 
     /* Check if there are spans in the span tree */
     if(space->select.sel_info.hslab->span_lst != NULL)
         /* Reset the scratch pointers for the next routine which needs them */
-        H5S_hyper_span_scratch(space->select.sel_info.hslab->span_lst, NULL);
+        H5S__hyper_span_scratch(space->select.sel_info.hslab->span_lst);
 
-    FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_hyper_reset_scratch() */
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5S_hyper_reset_scratch() */
 
 
 /*--------------------------------------------------------------------------
@@ -3845,9 +3853,9 @@ H5S_hyper_reset_scratch(H5S_t *space)
 herr_t
 H5S_hyper_convert(H5S_t *space)
 {
-    herr_t      ret_value=SUCCEED;       /* Return value */
+    herr_t      ret_value = SUCCEED;       /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_NOAPI(FAIL)
 
     HDassert(space);
 
@@ -3856,23 +3864,19 @@ H5S_hyper_convert(H5S_t *space)
         case H5S_SEL_ALL:    /* All elements selected in dataspace */
             /* Convert current "all" selection to "real" hyperslab selection */
             {
-                hsize_t tmp_start[H5O_LAYOUT_NDIMS];   /* Temporary start information */
-                hsize_t tmp_stride[H5O_LAYOUT_NDIMS];   /* Temporary stride information */
-                hsize_t tmp_count[H5O_LAYOUT_NDIMS];    /* Temporary count information */
-                hsize_t tmp_block[H5O_LAYOUT_NDIMS];    /* Temporary block information */
-                unsigned u;                             /* Local index variable */
-
-                /* Fill in temporary information for the dimensions */
-                for(u=0; u<space->extent.rank; u++) {
-                    tmp_start[u]=0;
-                    tmp_stride[u]=1;
-                    tmp_count[u]=1;
-                    tmp_block[u]=space->extent.size[u];
-                } /* end for */
+                const hsize_t *tmp_start;       /* Temporary start information */
+                const hsize_t *tmp_stride;      /* Temporary stride information */
+                const hsize_t *tmp_count;       /* Temporary count information */
+                const hsize_t *tmp_block;       /* Temporary block information */
+
+                /* Set up temporary information for the dimensions */
+                tmp_start = H5S_hyper_zeros_g;
+                tmp_stride = tmp_count = H5S_hyper_ones_g;
+                tmp_block = space->extent.size;
 
                 /* Convert to hyperslab selection */
                 if(H5S_select_hyperslab(space,H5S_SELECT_SET,tmp_start,tmp_stride,tmp_count,tmp_block)<0)
-                    HGOTO_ERROR(H5E_DATASPACE, H5E_CANTDELETE, FAIL, "can't convert selection")
+                    HGOTO_ERROR(H5E_DATASPACE, H5E_CANTSET, FAIL, "can't convert selection")
             } /* end case */
             break;
 
@@ -3889,7 +3893,7 @@ H5S_hyper_convert(H5S_t *space)
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_convert() */
+} /* end H5S_hyper_convert() */
 
 #ifdef LATER
 
@@ -4013,7 +4017,7 @@ done:
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_intersect_block_helper
+    H5S__hyper_intersect_block_helper
  PURPOSE
     Helper routine to detect intersections in span trees
  USAGE
@@ -4031,14 +4035,14 @@ done:
  EXAMPLES
  REVISION LOG
 --------------------------------------------------------------------------*/
-static htri_t
-H5S_hyper_intersect_block_helper (const H5S_hyper_span_info_t *spans, hsize_t *start, hsize_t *end)
+static hbool_t
+H5S__hyper_intersect_block_helper(const H5S_hyper_span_info_t *spans,
+    const hsize_t *start, const hsize_t *end)
 {
-    H5S_hyper_span_t *curr;     /* Pointer to current span in 1st span tree */
-    htri_t status;              /* Status from recursive call */
-    htri_t ret_value=FALSE;     /* Return value */
+    H5S_hyper_span_t *curr;         /* Pointer to current span in 1st span tree */
+    hbool_t ret_value = FALSE;      /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC_NOERR
 
     /* Sanity check */
     HDassert(spans);
@@ -4046,39 +4050,42 @@ H5S_hyper_intersect_block_helper (const H5S_hyper_span_info_t *spans, hsize_t *s
     HDassert(end);
 
     /* Get the span list for spans in this tree */
-    curr=spans->head;
+    curr = spans->head;
 
     /* Iterate over the spans in the tree */
-    while(curr!=NULL) {
+    while(curr != NULL) {
         /* Check for span entirely before block */
         if(curr->high < *start)
             /* Advance to next span in this dimension */
-            curr=curr->next;
+            curr = curr->next;
         /* If this span is past the end of the block, then we're done in this dimension */
         else if(curr->low > *end)
             HGOTO_DONE(FALSE)
         /* block & span overlap */
         else {
-            if(curr->down==NULL)
+            if(curr->down == NULL)
                 HGOTO_DONE(TRUE)
             else {
+                hbool_t status;         /* Status from recursive call */
+
                 /* Recursively check spans in next dimension down */
-                if((status=H5S_hyper_intersect_block_helper(curr->down,start+1,end+1))<0)
-                    HGOTO_ERROR(H5E_DATASPACE, H5E_BADSELECT, FAIL, "can't perform hyperslab intersection check")
+                status = H5S__hyper_intersect_block_helper(curr->down, start + 1, end + 1);
 
                 /* If there is a span intersection in the down dimensions, the span trees overlap */
-                if(status==TRUE)
+                if(status == TRUE)
                     HGOTO_DONE(TRUE);
 
                 /* No intersection in down dimensions, advance to next span */
-                curr=curr->next;
+                curr = curr->next;
             } /* end else */
         } /* end else */
     } /* end while */
 
+    /* Fall through with 'FALSE' return value */
+
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_intersect_block_helper() */
+} /* end H5S__hyper_intersect_block_helper() */
 
 
 /*--------------------------------------------------------------------------
@@ -4101,11 +4108,11 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 htri_t
-H5S_hyper_intersect_block (H5S_t *space, hsize_t *start, hsize_t *end)
+H5S_hyper_intersect_block(H5S_t *space, const hsize_t *start, const hsize_t *end)
 {
-    htri_t ret_value=FAIL;      /* Return value */
+    htri_t ret_value = FAIL;    /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_NOAPI(FAIL)
 
     /* Sanity check */
     HDassert(space);
@@ -4114,34 +4121,33 @@ H5S_hyper_intersect_block (H5S_t *space, hsize_t *start, hsize_t *end)
 
     /* Check for 'all' selection, instead of a hyperslab selection */
     /* (Technically, this shouldn't be in the "hyperslab" routines...) */
-    if(H5S_GET_SELECT_TYPE(space)==H5S_SEL_ALL)
+    if(H5S_GET_SELECT_TYPE(space) == H5S_SEL_ALL)
         HGOTO_DONE(TRUE);
 
     /* Check that the space selection has a span tree */
-    if(space->select.sel_info.hslab->span_lst==NULL)
-        if(H5S_hyper_generate_spans(space)<0)
+    if(NULL == space->select.sel_info.hslab->span_lst)
+        if(H5S__hyper_generate_spans(space) < 0)
             HGOTO_ERROR(H5E_DATASPACE, H5E_UNINITIALIZED, FAIL, "dataspace does not have span tree")
 
     /* Perform the span-by-span intersection check */
-    if((ret_value=H5S_hyper_intersect_block_helper(space->select.sel_info.hslab->span_lst,start,end))<0)
-        HGOTO_ERROR(H5E_DATASPACE, H5E_BADSELECT, FAIL, "can't perform hyperslab intersection check")
+    ret_value = H5S__hyper_intersect_block_helper(space->select.sel_info.hslab->span_lst, start, end);
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_intersect_block() */
+} /* end H5S_hyper_intersect_block() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_adjust_helper_u
+    H5S__hyper_adjust_u_helper
  PURPOSE
     Helper routine to adjust offsets in span trees
  USAGE
-    herr_t H5S_hyper_adjust_helper_u(spans, offset)
+    void H5S__hyper_adjust_u_helper(spans, offset)
         H5S_hyper_span_info_t *spans;   IN: Span tree to operate with
-        const hsize_t *offset;         IN: Offset to subtract
+        const hsize_t *offset;          IN: Offset to subtract
  RETURNS
-    Non-negative on success, negative on failure
+    None
  DESCRIPTION
     Adjust the location of the spans in a span tree by subtracting an offset
  GLOBAL VARIABLES
@@ -4149,56 +4155,57 @@ done:
  EXAMPLES
  REVISION LOG
 --------------------------------------------------------------------------*/
-static herr_t
-H5S_hyper_adjust_helper_u (H5S_hyper_span_info_t *spans, const hsize_t *offset)
+static void
+H5S__hyper_adjust_u_helper(H5S_hyper_span_info_t *spans,
+    const hsize_t *offset)
 {
-    H5S_hyper_span_t *span;     /* Pointer to current span in span tree */
-
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
-    /* Sanity check */
+    /* Sanity checks */
     HDassert(spans);
+    HDassert(spans->scratch == (H5S_hyper_span_info_t *)~((size_t)NULL) ||
+        spans->scratch == NULL);
     HDassert(offset);
 
     /* Check if we've already set this down span tree */
-    if(spans->scratch!=(H5S_hyper_span_info_t *)~((size_t)NULL)) {
-        /* Set the tree's scratch pointer */
-        spans->scratch=(H5S_hyper_span_info_t *)~((size_t)NULL);
+    if(spans->scratch != (H5S_hyper_span_info_t *)~((size_t)NULL)) {
+        H5S_hyper_span_t *span;     /* Pointer to current span in span tree */
 
-        /* Get the span lists for each span in this tree */
-        span=spans->head;
+        /* Set the tree's scratch pointer */
+        spans->scratch = (H5S_hyper_span_info_t *)~((size_t)NULL);
 
         /* Iterate over the spans in tree */
-        while(span!=NULL) {
+        span = spans->head;
+        while(span != NULL) {
             /* Adjust span offset */
-            HDassert(span->low>=*offset);
-            span->low-=*offset;
-            span->high-=*offset;
+            HDassert(span->low >= *offset);
+            span->low -= *offset;
+            span->high -= *offset;
 
             /* Recursively adjust spans in next dimension down */
-            if(span->down!=NULL)
-                H5S_hyper_adjust_helper_u(span->down,offset+1);
+            if(span->down != NULL)
+                H5S__hyper_adjust_u_helper(span->down, offset + 1);
 
             /* Advance to next span in this dimension */
-            span=span->next;
+            span = span->next;
         } /* end while */
     } /* end if */
 
-    FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_hyper_adjust_helper_u() */
+    FUNC_LEAVE_NOAPI_VOID
+} /* end H5S__hyper_adjust_u_helper() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_adjust_u
+    H5S__hyper_adjust_u
  PURPOSE
     Adjust a hyperslab selection by subtracting an offset
  USAGE
-    herr_t H5S_hyper_adjust_u(space,offset)
+    void H5S__hyper_adjust_u(space,offset)
         H5S_t *space;           IN/OUT: Pointer to dataspace to adjust
         const hsize_t *offset; IN: Offset to subtract
  RETURNS
-    Non-negative on success, negative on failure
+    None
  DESCRIPTION
     Moves a hyperslab selection by subtracting an offset from it.
  GLOBAL VARIABLES
@@ -4206,41 +4213,39 @@ H5S_hyper_adjust_helper_u (H5S_hyper_span_info_t *spans, const hsize_t *offset)
  EXAMPLES
  REVISION LOG
 --------------------------------------------------------------------------*/
-static herr_t
-H5S_hyper_adjust_u(H5S_t *space, const hsize_t *offset)
+static void
+H5S__hyper_adjust_u(H5S_t *space, const hsize_t *offset)
 {
-    unsigned u;                         /* Local index variable */
-    herr_t      ret_value=SUCCEED;       /* Return value */
-
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC_NOERR
 
+    /* Sanity check */
     HDassert(space);
     HDassert(offset);
 
     /* Subtract the offset from the "regular" coordinates, if they exist */
     if(space->select.sel_info.hslab->diminfo_valid) {
-        for(u=0; u<space->extent.rank; u++) {
-            HDassert(space->select.sel_info.hslab->opt_diminfo[u].start>=offset[u]);
-            space->select.sel_info.hslab->opt_diminfo[u].start-=offset[u];
+        unsigned u;                         /* Local index variable */
+
+        for(u = 0; u < space->extent.rank; u++) {
+            HDassert(space->select.sel_info.hslab->opt_diminfo[u].start >= offset[u]);
+            space->select.sel_info.hslab->opt_diminfo[u].start -= offset[u];
         } /* end for */
     } /* end if */
 
     /* Subtract the offset from the span tree coordinates, if they exist */
     if(space->select.sel_info.hslab->span_lst) {
-        if(H5S_hyper_adjust_helper_u(space->select.sel_info.hslab->span_lst,offset)<0)
-            HGOTO_ERROR(H5E_DATASPACE, H5E_BADSELECT, FAIL, "can't perform hyperslab offset adjustment")
+        H5S__hyper_adjust_u_helper(space->select.sel_info.hslab->span_lst, offset);
 
         /* Reset the scratch pointers for the next routine which needs them */
-        H5S_hyper_span_scratch(space->select.sel_info.hslab->span_lst, NULL);
+        H5S__hyper_span_scratch(space->select.sel_info.hslab->span_lst);
     } /* end if */
 
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_adjust_u() */
+    FUNC_LEAVE_NOAPI_VOID
+} /* end H5S__hyper_adjust_u() */
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5S_hyper_project_scalar
+ * Function:	H5S__hyper_project_scalar
  *
  * Purpose:	Projects a single element hyperslab selection into a scalar
  *              dataspace
@@ -4253,12 +4258,11 @@ done:
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5S_hyper_project_scalar(const H5S_t *space, hsize_t *offset)
+H5S__hyper_project_scalar(const H5S_t *space, hsize_t *offset)
 {
-    hsize_t block[H5S_MAX_RANK];     /* Block selected in base dataspace */
-    herr_t ret_value = SUCCEED;         /* Return value */
+    hsize_t block[H5S_MAX_RANK];        /* Block selected in base dataspace */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(space && H5S_SEL_HYPERSLABS == H5S_GET_SELECT_TYPE(space));
@@ -4271,11 +4275,8 @@ H5S_hyper_project_scalar(const H5S_t *space, hsize_t *offset)
 
         /* Build the table of the initial offset */
         for(u = 0; u < space->extent.rank; u++) {
+            /* Keep the offset for later */
             block[u] = diminfo[u].start;
-
-            /* Check for more than one hyperslab */
-            if(diminfo[u].count > 1 || diminfo[u].block > 1)
-                HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "hyperslab selection of one element has more than one node!")
         } /* end for */
     } /* end if */
     else {
@@ -4286,9 +4287,9 @@ H5S_hyper_project_scalar(const H5S_t *space, hsize_t *offset)
         curr = space->select.sel_info.hslab->span_lst->head;
         curr_dim = 0;
         while(curr) {
-            /* Check for more than one span */
-            if(curr->next || curr->low != curr->high)
-                HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "hyperslab selection of one element has more than one node!")
+            /* Sanity check for more than one span */
+            HDassert(NULL == curr->next);
+            HDassert(curr->low == curr->high);
 
             /* Save the location of the selection in current dimension */
             block[curr_dim] = curr->low;
@@ -4300,15 +4301,14 @@ H5S_hyper_project_scalar(const H5S_t *space, hsize_t *offset)
     } /* end else */
 
     /* Calculate offset of selection in projected buffer */
-    *offset = H5VM_array_offset(space->extent.rank, space->extent.size, block); 
+    *offset = H5VM_array_offset(space->extent.rank, space->extent.size, block);
 
-done:
-    FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_project_scalar() */
+    FUNC_LEAVE_NOAPI(SUCCEED)
+} /* end H5S__hyper_project_scalar() */
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5S_hyper_project_simple_lower
+ * Function:	H5S__hyper_project_simple_lower
  *
  * Purpose:	Projects a hyperslab selection onto/into a simple dataspace
  *              of a lower rank
@@ -4321,12 +4321,12 @@ done:
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5S_hyper_project_simple_lower(const H5S_t *base_space, H5S_t *new_space)
+H5S__hyper_project_simple_lower(const H5S_t *base_space, H5S_t *new_space)
 {
     H5S_hyper_span_info_t *down;        /* Pointer to list of spans */
     unsigned curr_dim;                  /* Current dimension being operated on */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(base_space && H5S_SEL_HYPERSLABS == H5S_GET_SELECT_TYPE(base_space));
@@ -4351,11 +4351,11 @@ H5S_hyper_project_simple_lower(const H5S_t *base_space, H5S_t *new_space)
     new_space->select.sel_info.hslab->span_lst->count++;
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_hyper_project_simple_lower() */
+} /* end H5S__hyper_project_simple_lower() */
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5S_hyper_project_simple_higher
+ * Function:	H5S__hyper_project_simple_higher
  *
  * Purpose:	Projects a hyperslab selection onto/into a simple dataspace
  *              of a higher rank
@@ -4368,13 +4368,13 @@ H5S_hyper_project_simple_lower(const H5S_t *base_space, H5S_t *new_space)
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5S_hyper_project_simple_higher(const H5S_t *base_space, H5S_t *new_space)
+H5S__hyper_project_simple_higher(const H5S_t *base_space, H5S_t *new_space)
 {
     H5S_hyper_span_t *prev_span = NULL; /* Pointer to previous list of spans */
     unsigned curr_dim;                  /* Current dimension being operated on */
     herr_t ret_value = SUCCEED;         /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC
 
     /* Check args */
     HDassert(base_space && H5S_SEL_HYPERSLABS == H5S_GET_SELECT_TYPE(base_space));
@@ -4389,9 +4389,9 @@ H5S_hyper_project_simple_higher(const H5S_t *base_space, H5S_t *new_space)
         H5S_hyper_span_t *new_span;     /* Temporary hyperslab span */
 
         /* Allocate a new span_info node */
-        if(NULL == (new_span_info = H5FL_MALLOC(H5S_hyper_span_info_t))) {
+        if(NULL == (new_span_info = H5FL_CALLOC(H5S_hyper_span_info_t))) {
             if(prev_span)
-                if(H5S_hyper_free_span(prev_span) < 0)
+                if(H5S__hyper_free_span(prev_span) < 0)
                     HERROR(H5E_DATASPACE, H5E_CANTFREE, "can't free hyperslab span");
             HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, FAIL, "can't allocate hyperslab span info")
         } /* end if */
@@ -4401,7 +4401,7 @@ H5S_hyper_project_simple_higher(const H5S_t *base_space, H5S_t *new_space)
             prev_span->down = new_span_info;
 
         /* Allocate a new node */
-        if(NULL == (new_span = H5S_hyper_new_span(0, 0, NULL, NULL))) {
+        if(NULL == (new_span = H5S__hyper_new_span((hsize_t)0, (hsize_t)0, NULL, NULL))) {
             HDassert(new_span_info);
             if(!prev_span)
                 (void)H5FL_FREE(H5S_hyper_span_info_t, new_span_info);
@@ -4410,7 +4410,6 @@ H5S_hyper_project_simple_higher(const H5S_t *base_space, H5S_t *new_space)
 
         /* Set the span_info information */
         new_span_info->count = 1;
-        new_span_info->scratch = NULL;
         new_span_info->head = new_span;
 
         /* Attach to new space, if top span info */
@@ -4433,19 +4432,18 @@ H5S_hyper_project_simple_higher(const H5S_t *base_space, H5S_t *new_space)
 done:
     if(ret_value < 0 && new_space->select.sel_info.hslab->span_lst) {
         if(new_space->select.sel_info.hslab->span_lst->head)
-            if(H5S_hyper_free_span(
-                    new_space->select.sel_info.hslab->span_lst->head) < 0)
+            if(H5S__hyper_free_span(new_space->select.sel_info.hslab->span_lst->head) < 0)
                 HDONE_ERROR(H5E_DATASPACE, H5E_CANTFREE, FAIL, "can't free hyperslab span")
 
         new_space->select.sel_info.hslab->span_lst = H5FL_FREE(H5S_hyper_span_info_t, new_space->select.sel_info.hslab->span_lst);
     } /* end if */
 
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_project_simple_higher() */
+} /* end H5S__hyper_project_simple_higher() */
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5S_hyper_project_simple
+ * Function:	H5S__hyper_project_simple
  *
  * Purpose:	Projects a hyperslab selection onto/into a simple dataspace
  *              of a different rank
@@ -4458,11 +4456,11 @@ done:
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5S_hyper_project_simple(const H5S_t *base_space, H5S_t *new_space, hsize_t *offset)
+H5S__hyper_project_simple(const H5S_t *base_space, H5S_t *new_space, hsize_t *offset)
 {
     herr_t ret_value = SUCCEED;         /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC
 
     /* Check args */
     HDassert(base_space && H5S_SEL_HYPERSLABS == H5S_GET_SELECT_TYPE(base_space));
@@ -4475,7 +4473,7 @@ H5S_hyper_project_simple(const H5S_t *base_space, H5S_t *new_space, hsize_t *off
 
     /* Allocate space for the hyperslab selection information */
     if(NULL == (new_space->select.sel_info.hslab = H5FL_MALLOC(H5S_hyper_sel_t)))
-        HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't allocate hyperslab info")
+        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, FAIL, "can't allocate hyperslab info")
 
     /* Set unlim_dim */
     new_space->select.sel_info.hslab->unlim_dim = -1;
@@ -4495,7 +4493,7 @@ H5S_hyper_project_simple(const H5S_t *base_space, H5S_t *new_space, hsize_t *off
             HDmemset(block, 0, sizeof(block));
             for(u = 0; u < (base_space->extent.rank - new_space->extent.rank); u++)
                 block[u] = opt_diminfo[u].start;
-            *offset = H5VM_array_offset(base_space->extent.rank, base_space->extent.size, block); 
+            *offset = H5VM_array_offset(base_space->extent.rank, base_space->extent.size, block);
 
             /* Set the correct dimensions for the base & new spaces */
             base_space_dim = base_space->extent.rank - new_space->extent.rank;
@@ -4578,10 +4576,10 @@ H5S_hyper_project_simple(const H5S_t *base_space, H5S_t *new_space, hsize_t *off
             } /* end while */
 
             /* Compute the offset for the down-projection */
-            *offset = H5VM_array_offset(base_space->extent.rank, base_space->extent.size, block); 
+            *offset = H5VM_array_offset(base_space->extent.rank, base_space->extent.size, block);
 
             /* Project the base space's selection down in less dimensions */
-            if(H5S_hyper_project_simple_lower(base_space, new_space) < 0)
+            if(H5S__hyper_project_simple_lower(base_space, new_space) < 0)
                 HGOTO_ERROR(H5E_DATASPACE, H5E_CANTSELECT, FAIL, "can't project hyperslab selection into less dimensions")
         } /* end if */
         else {
@@ -4590,8 +4588,8 @@ H5S_hyper_project_simple(const H5S_t *base_space, H5S_t *new_space, hsize_t *off
             /* The offset is zero when projected into higher dimensions */
             *offset = 0;
 
-            /* Project the base space's selection down in less dimensions */
-            if(H5S_hyper_project_simple_higher(base_space, new_space) < 0)
+            /* Project the base space's selection down in more dimensions */
+            if(H5S__hyper_project_simple_higher(base_space, new_space) < 0)
                 HGOTO_ERROR(H5E_DATASPACE, H5E_CANTSELECT, FAIL, "can't project hyperslab selection into less dimensions")
         } /* end else */
 
@@ -4607,20 +4605,20 @@ H5S_hyper_project_simple(const H5S_t *base_space, H5S_t *new_space, hsize_t *off
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_project_simple() */
+} /* end H5S__hyper_project_simple() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_adjust_helper_s
+    H5S__hyper_adjust_s_helper
  PURPOSE
     Helper routine to adjust offsets in span trees
  USAGE
-    herr_t H5S_hyper_adjust_helper_s(spans, offset)
+    void H5S__hyper_adjust_s_helper(spans, offset)
         H5S_hyper_span_info_t *spans;   IN: Span tree to operate with
         const hssize_t *offset;         IN: Offset to subtract
  RETURNS
-    Non-negative on success, negative on failure
+    None
  DESCRIPTION
     Adjust the location of the spans in a span tree by subtracting an offset
  GLOBAL VARIABLES
@@ -4628,26 +4626,27 @@ done:
  EXAMPLES
  REVISION LOG
 --------------------------------------------------------------------------*/
-static herr_t
-H5S_hyper_adjust_helper_s(H5S_hyper_span_info_t *spans, const hssize_t *offset)
+static void
+H5S__hyper_adjust_s_helper(H5S_hyper_span_info_t *spans,
+    const hssize_t *offset)
 {
-    H5S_hyper_span_t *span;     /* Pointer to current span in span tree */
-
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
-    /* Sanity check */
+    /* Sanity checks */
     HDassert(spans);
+    HDassert(spans->scratch == (H5S_hyper_span_info_t *)~((size_t)NULL) ||
+        spans->scratch == NULL);
     HDassert(offset);
 
     /* Check if we've already set this down span tree */
     if(spans->scratch != (H5S_hyper_span_info_t *)~((size_t)NULL)) {
+        H5S_hyper_span_t *span;     /* Pointer to current span in span tree */
+
         /* Set the tree's scratch pointer */
         spans->scratch = (H5S_hyper_span_info_t *)~((size_t)NULL);
 
-        /* Get the span lists for each span in this tree */
-        span = spans->head;
-
         /* Iterate over the spans in tree */
+        span = spans->head;
         while(span != NULL) {
             /* Adjust span offset */
             HDassert((hssize_t)span->low >= *offset);
@@ -4656,15 +4655,15 @@ H5S_hyper_adjust_helper_s(H5S_hyper_span_info_t *spans, const hssize_t *offset)
 
             /* Recursively adjust spans in next dimension down */
             if(span->down != NULL)
-                H5S_hyper_adjust_helper_s(span->down, offset + 1);
+                H5S__hyper_adjust_s_helper(span->down, offset + 1);
 
             /* Advance to next span in this dimension */
             span = span->next;
         } /* end while */
     } /* end if */
 
-    FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_hyper_adjust_helper_s() */
+    FUNC_LEAVE_NOAPI_VOID
+} /* end H5S__hyper_adjust_s_helper() */
 
 
 /*--------------------------------------------------------------------------
@@ -4688,16 +4687,18 @@ H5S_hyper_adjust_helper_s(H5S_hyper_span_info_t *spans, const hssize_t *offset)
 herr_t
 H5S_hyper_adjust_s(H5S_t *space, const hssize_t *offset)
 {
-    unsigned u;                         /* Local index variable */
-    herr_t      ret_value = SUCCEED;    /* Return value */
+    herr_t ret_value = SUCCEED;         /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_NOAPI(FAIL)
 
+    /* Sanity checks */
     HDassert(space);
     HDassert(offset);
 
     /* Subtract the offset from the "regular" coordinates, if they exist */
     if(space->select.sel_info.hslab->diminfo_valid) {
+        unsigned u;                         /* Local index variable */
+
         for(u = 0; u < space->extent.rank; u++) {
             HDassert((hssize_t)space->select.sel_info.hslab->opt_diminfo[u].start >= offset[u]);
             space->select.sel_info.hslab->opt_diminfo[u].start = (hsize_t)((hssize_t)space->select.sel_info.hslab->opt_diminfo[u].start - offset[u]);
@@ -4706,16 +4707,15 @@ H5S_hyper_adjust_s(H5S_t *space, const hssize_t *offset)
 
     /* Subtract the offset from the span tree coordinates, if they exist */
     if(space->select.sel_info.hslab->span_lst) {
-        if(H5S_hyper_adjust_helper_s(space->select.sel_info.hslab->span_lst, offset) < 0)
-            HGOTO_ERROR(H5E_DATASPACE, H5E_BADSELECT, FAIL, "can't perform hyperslab offset adjustment")
+        H5S__hyper_adjust_s_helper(space->select.sel_info.hslab->span_lst, offset);
 
         /* Reset the scratch pointers for the next routine which needs them */
-        H5S_hyper_span_scratch(space->select.sel_info.hslab->span_lst, NULL);
+        H5S__hyper_span_scratch(space->select.sel_info.hslab->span_lst);
     } /* end if */
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_adjust_s() */
+} /* end H5S_hyper_adjust_s() */
 
 
 /*--------------------------------------------------------------------------
@@ -4725,11 +4725,11 @@ done:
     "Normalize" a hyperslab selection by adjusting it's coordinates by the
     amount of the selection offset.
  USAGE
-    herr_t H5S_hyper_normalize_offset(space, old_offset)
+    hbool_t H5S_hyper_normalize_offset(space, old_offset)
         H5S_t *space;           IN/OUT: Pointer to dataspace to move
         hssize_t *old_offset;   OUT: Pointer to space to store old offset
  RETURNS
-    Non-negative on success, negative on failure
+    TRUE if space has been normalized, FALSE if not
  DESCRIPTION
     Copies the current selection offset into the array provided, then
     inverts the selection offset, subtracts the offset from the hyperslab
@@ -4742,24 +4742,27 @@ done:
 htri_t
 H5S_hyper_normalize_offset(H5S_t *space, hssize_t *old_offset)
 {
-    unsigned u;                         /* Local index variable */
-    herr_t ret_value = FALSE;           /* Return value */
+    htri_t ret_value = FALSE;           /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_NOAPI(FAIL)
 
+    /* Sanity checks */
     HDassert(space);
+    HDassert(old_offset);
 
     /* Check for hyperslab selection & offset changed */
     if(H5S_GET_SELECT_TYPE(space) == H5S_SEL_HYPERSLABS && space->select.offset_changed) {
+        unsigned u;                         /* Local index variable */
+
         /* Copy & invert the selection offset */
-        for(u = 0; u<space->extent.rank; u++) {
+        for(u = 0; u < space->extent.rank; u++) {
             old_offset[u] = space->select.offset[u];
             space->select.offset[u] = -space->select.offset[u];
         } /* end for */
 
-        /* Call the existing 'adjust' routine */
+        /* Call the 'adjust' routine */
         if(H5S_hyper_adjust_s(space, space->select.offset) < 0)
-            HGOTO_ERROR(H5E_DATASPACE, H5E_BADSELECT, FAIL, "can't perform hyperslab normalization")
+            HGOTO_ERROR(H5E_DATASPACE, H5E_CANTSET, FAIL, "can't adjust selection")
 
         /* Zero out the selection offset */
         HDmemset(space->select.offset, 0, sizeof(hssize_t) * space->extent.rank);
@@ -4770,7 +4773,7 @@ H5S_hyper_normalize_offset(H5S_t *space, hssize_t *old_offset)
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_normalize_offset() */
+} /* end H5S_hyper_normalize_offset() */
 
 
 /*--------------------------------------------------------------------------
@@ -4780,7 +4783,7 @@ done:
     "Denormalize" a hyperslab selection by reverse adjusting it's coordinates
     by the amount of the former selection offset.
  USAGE
-    herr_t H5S_hyper_normalize_offset(space, old_offset)
+    herr_t H5S_hyper_denormalize_offset(space, old_offset)
         H5S_t *space;           IN/OUT: Pointer to dataspace to move
         hssize_t *old_offset;   IN: Pointer to old offset array
  RETURNS
@@ -4797,32 +4800,33 @@ done:
 herr_t
 H5S_hyper_denormalize_offset(H5S_t *space, const hssize_t *old_offset)
 {
-    herr_t      ret_value = SUCCEED;    /* Return value */
+    herr_t ret_value = SUCCEED;         /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_NOAPI(FAIL)
 
+    /* Sanity checks */
     HDassert(space);
     HDassert(H5S_GET_SELECT_TYPE(space) == H5S_SEL_HYPERSLABS);
 
-    /* Call the existing 'adjust' routine */
+    /* Call the 'adjust' routine */
     if(H5S_hyper_adjust_s(space, old_offset) < 0)
-        HGOTO_ERROR(H5E_DATASPACE, H5E_BADSELECT, FAIL, "can't perform hyperslab normalization")
+        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTSET, FAIL, "can't adjust selection")
 
     /* Copy the selection offset over */
     HDmemcpy(space->select.offset, old_offset, sizeof(hssize_t) * space->extent.rank);
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_denormalize_offset() */
+} /* end H5S_hyper_denormalize_offset() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_append_span
+    H5S__hyper_append_span
  PURPOSE
     Create a new span and append to span list
  USAGE
-    herr_t H5S_hyper_append_span(prev_span, span_tree, low, high, down, next)
+    herr_t H5S__hyper_append_span(prev_span, span_tree, low, high, down, next)
         H5S_hyper_span_t **prev_span;    IN/OUT: Pointer to previous span in list
         H5S_hyper_span_info_t **span_tree;  IN/OUT: Pointer to span tree to append to
         hsize_t low, high;         IN: Low and high bounds for new span node
@@ -4839,62 +4843,62 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_append_span (H5S_hyper_span_t **prev_span, H5S_hyper_span_info_t ** span_tree, hsize_t low, hsize_t high, H5S_hyper_span_info_t *down, H5S_hyper_span_t *next)
+H5S__hyper_append_span(H5S_hyper_span_t **prev_span,
+    H5S_hyper_span_info_t **span_tree, hsize_t low, hsize_t high, H5S_hyper_span_info_t *down, H5S_hyper_span_t *next)
 {
     H5S_hyper_span_t *new_span = NULL;
     herr_t      ret_value = SUCCEED;       /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC
 
     HDassert(prev_span);
     HDassert(span_tree);
 
     /* Check for adding first node to merged spans */
-    if(*prev_span==NULL) {
+    if(*prev_span == NULL) {
         /* Allocate new span node to append to list */
-        if((new_span = H5S_hyper_new_span(low,high,down,next))==NULL)
-            HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't allocate hyperslab span")
+        if(NULL == (new_span = H5S__hyper_new_span(low, high, down, next)))
+            HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, FAIL, "can't allocate hyperslab span")
 
         /* Make first node in span list */
 
         /* Check that we haven't already allocated a span tree */
-        HDassert(*span_tree==NULL);
+        HDassert(*span_tree == NULL);
 
         /* Allocate a new span_info node */
-        if((*span_tree = H5FL_MALLOC(H5S_hyper_span_info_t))==NULL)
-            HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't allocate hyperslab span")
+        if(NULL == (*span_tree = H5FL_CALLOC(H5S_hyper_span_info_t)))
+            HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, FAIL, "can't allocate hyperslab span")
 
         /* Set the span tree's basic information */
-        (*span_tree)->count=1;
-        (*span_tree)->scratch=NULL;
-        (*span_tree)->head=new_span;
+        (*span_tree)->count = 1;
+        (*span_tree)->head = new_span;
 
         /* Update previous merged span */
-        *prev_span=new_span;
+        *prev_span = new_span;
     } /* end if */
     /* Merge or append to existing merged spans list */
     else {
         /* Check if span can just extend the previous merged span */
-        if((((*prev_span)->high+1)==low) &&
-                H5S_hyper_cmp_spans(down,(*prev_span)->down)==TRUE) {
+        if((((*prev_span)->high + 1) == low) &&
+                H5S__hyper_cmp_spans(down, (*prev_span)->down)==TRUE) {
             /* Extend previous merged span to include new high bound */
-            (*prev_span)->high=high;
-            (*prev_span)->nelem+=(high-low)+1;
+            (*prev_span)->high = high;
+            (*prev_span)->nelem += (high - low) + 1;
         } /* end if */
         else {
             /* Allocate new span node to append to list */
-            if((new_span = H5S_hyper_new_span(low,high,down,next))==NULL)
+            if(NULL == (new_span = H5S__hyper_new_span(low, high, down, next)))
                 HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't allocate hyperslab span")
 
             /* Check if there is actually a down span */
             if(new_span->down) {
                 /* Check if the down spans for the new span node are the same as the previous span node */
-                if(H5S_hyper_cmp_spans(new_span->down,(*prev_span)->down)==TRUE) {
+                if(H5S__hyper_cmp_spans(new_span->down, (*prev_span)->down)) {
                     /* Release the down span for the new node */
-                    H5S_hyper_free_span_info(new_span->down);
+                    H5S__hyper_free_span_info(new_span->down);
 
                     /* Point the new node's down span at the previous node's down span */
-                    new_span->down=(*prev_span)->down;
+                    new_span->down = (*prev_span)->down;
 
                     /* Increment the reference count to the shared down span */
                     new_span->down->count++;
@@ -4902,32 +4906,30 @@ H5S_hyper_append_span (H5S_hyper_span_t **prev_span, H5S_hyper_span_info_t ** sp
             } /* end if */
 
             /* Indicate elements from previous span */
-            new_span->pstride=low-(*prev_span)->low;
+            new_span->pstride = low - (*prev_span)->low;
 
             /* Append to end of merged spans list */
-            (*prev_span)->next=new_span;
-            *prev_span=new_span;
+            (*prev_span)->next = new_span;
+            *prev_span = new_span;
         } /* end else */
     } /* end else */
 
 done:
-    if(ret_value < 0) {
-        if(new_span)
-            if(H5S_hyper_free_span(new_span) < 0)
-                HDONE_ERROR(H5E_DATASPACE, H5E_CANTFREE, FAIL, "failed to release new hyperslab span")
-    } /* end if */
+    if(ret_value < 0)
+        if(new_span && H5S__hyper_free_span(new_span) < 0)
+            HDONE_ERROR(H5E_DATASPACE, H5E_CANTFREE, FAIL, "failed to release new hyperslab span")
 
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_append_span() */
+} /* end H5S__hyper_append_span() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_clip_spans
+    H5S__hyper_clip_spans
  PURPOSE
     Clip a new span tree against the current spans in the hyperslab selection
  USAGE
-    herr_t H5S_hyper_clip_spans(span_a, span_b, a_not_b, a_and_b, b_not_a)
+    herr_t H5S__hyper_clip_spans(span_a, span_b, a_not_b, a_and_b, b_not_a)
         H5S_hyper_span_t *a_spans;    IN: Span tree 'a' to clip with.
         H5S_hyper_span_t *b_spans;    IN: Span tree 'b' to clip with.
         H5S_hyper_span_t **a_not_b;  OUT: Span tree of 'a' hyperslab spans which
@@ -4952,7 +4954,7 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_clip_spans (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_info_t *b_spans,
+H5S__hyper_clip_spans(H5S_hyper_span_info_t *a_spans, H5S_hyper_span_info_t *b_spans,
     H5S_hyper_span_info_t **a_not_b, H5S_hyper_span_info_t **a_and_b,
     H5S_hyper_span_info_t **b_not_a)
 {
@@ -4965,10 +4967,10 @@ H5S_hyper_clip_spans (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_info_t *b_s
     H5S_hyper_span_info_t *down_a_not_b; /* Temporary pointer to a_not_b span tree of down spans for overlapping nodes */
     H5S_hyper_span_info_t *down_a_and_b; /* Temporary pointer to a_and_b span tree of down spans for overlapping nodes */
     H5S_hyper_span_info_t *down_b_not_a; /* Temporary pointer to b_and_a span tree of down spans for overlapping nodes */
-    unsigned recover_a, recover_b;         /* Flags to indicate when to recover temporary spans */
-    herr_t      ret_value=SUCCEED;       /* Return value */
+    hbool_t recover_a, recover_b;         /* Flags to indicate when to recover temporary spans */
+    herr_t      ret_value = SUCCEED;     /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC
 
     /* Check args */
     HDassert(a_spans);
@@ -4978,74 +4980,72 @@ H5S_hyper_clip_spans (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_info_t *b_s
     HDassert(b_not_a);
 
     /* Check if both span trees are not defined */
-    if(a_spans==NULL && b_spans==NULL) {
-        *a_not_b=NULL;
-        *a_and_b=NULL;
-        *b_not_a=NULL;
+    if(a_spans == NULL && b_spans == NULL) {
+        *a_not_b = NULL;
+        *a_and_b = NULL;
+        *b_not_a = NULL;
     } /* end if */
     /* If span 'a' is not defined, but 'b' is, copy 'b' and set the other return span trees to empty */
-    else if(a_spans==NULL) {
-        *a_not_b=NULL;
-        *a_and_b=NULL;
-        if((*b_not_a=H5S_hyper_copy_span(b_spans))==NULL)
+    else if(a_spans == NULL) {
+        *a_not_b = NULL;
+        *a_and_b = NULL;
+        if(NULL == (*b_not_a = H5S__hyper_copy_span(b_spans)))
             HGOTO_ERROR(H5E_INTERNAL, H5E_CANTCOPY, FAIL, "can't copy hyperslab span tree")
     } /* end if */
     /* If span 'b' is not defined, but 'a' is, copy 'a' and set the other return span trees to empty */
-    else if(b_spans==NULL) {
-        if((*a_not_b=H5S_hyper_copy_span(a_spans))==NULL)
+    else if(b_spans == NULL) {
+        if(NULL == (*a_not_b = H5S__hyper_copy_span(a_spans)) )
             HGOTO_ERROR(H5E_INTERNAL, H5E_CANTCOPY, FAIL, "can't copy hyperslab span tree")
-        *a_and_b=NULL;
-        *b_not_a=NULL;
+        *a_and_b = NULL;
+        *b_not_a = NULL;
     } /* end if */
     /* If span 'a' and 'b' are both defined, calculate the proper span trees */
     else {
         /* Check if both span trees completely overlap */
-        if(H5S_hyper_cmp_spans(a_spans,b_spans)==TRUE) {
-            *a_not_b=NULL;
-            if((*a_and_b=H5S_hyper_copy_span(a_spans))==NULL)
+        if(H5S__hyper_cmp_spans(a_spans, b_spans)) {
+            *a_not_b = NULL;
+            if(NULL == (*a_and_b = H5S__hyper_copy_span(a_spans)))
                 HGOTO_ERROR(H5E_INTERNAL, H5E_CANTCOPY, FAIL, "can't copy hyperslab span tree")
-            *b_not_a=NULL;
+            *b_not_a = NULL;
         } /* end if */
         else {
             /* Get the pointers to the new and old span lists */
-            span_a=a_spans->head;
-            span_b=b_spans->head;
+            span_a = a_spans->head;
+            span_b = b_spans->head;
 
-            /* Set the pointer to the previous spans */
-            last_a_not_b=NULL;
-            last_a_and_b=NULL;
-            last_b_not_a=NULL;
+            /* Reset the pointers to the previous spans */
+            last_a_not_b = last_a_and_b = last_b_not_a = NULL;
 
             /* No spans to recover yet */
-            recover_a=recover_b=0;
+            recover_a = recover_b = FALSE;
 
             /* Work through the list of spans in the new list */
-            while(span_a!=NULL && span_b!=NULL) {
+            while(span_a != NULL && span_b != NULL) {
                 /* Check if span 'a' is completely before span 'b' */
                 /*    AAAAAAA                            */
                 /* <-----------------------------------> */
                 /*             BBBBBBBBBB                */
-                if(span_a->high<span_b->low) {
+                if(span_a->high < span_b->low) {
                     /* Copy span 'a' and add to a_not_b list */
 
                     /* Merge/add span 'a' with/to a_not_b list */
-                    if(H5S_hyper_append_span(&last_a_not_b,a_not_b,span_a->low,span_a->high,span_a->down,NULL)==FAIL)
-                        HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
+                    if(H5S__hyper_append_span(&last_a_not_b, a_not_b, span_a->low, span_a->high, span_a->down, NULL) < 0)
+                        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                     /* Advance span 'a', leave span 'b' */
-                    H5S_hyper_recover_span(&recover_a,&span_a,span_a->next);
+                    H5S__hyper_recover_span(&recover_a, &span_a, span_a->next);
                 } /* end if */
                 /* Check if span 'a' overlaps only the lower bound */
                 /*  of span 'b' , up to the upper bound of span 'b' */
                 /*    AAAAAAAAAAAA                       */
                 /* <-----------------------------------> */
                 /*             BBBBBBBBBB                */
-                else if(span_a->low<span_b->low && (span_a->high>=span_b->low && span_a->high<=span_b->high)) {
+                else if(span_a->low < span_b->low && (span_a->high >= span_b->low && span_a->high <= span_b->high)) {
                     /* Split span 'a' into two parts at the low bound of span 'b' */
 
                     /* Merge/add lower part of span 'a' with/to a_not_b list */
-                    if(H5S_hyper_append_span(&last_a_not_b,a_not_b,span_a->low,span_b->low-1,span_a->down,NULL)==FAIL)
-                        HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
+                    if(H5S__hyper_append_span(&last_a_not_b, a_not_b, span_a->low, span_b->low - 1, span_a->down, NULL) < 0)
+                        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                     /* Check for overlaps between upper part of span 'a' and lower part of span 'b' */
 
@@ -5053,50 +5053,50 @@ H5S_hyper_clip_spans (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_info_t *b_s
                     HDassert((span_a->down != NULL && span_b->down != NULL) || (span_a->down == NULL && span_b->down == NULL));
 
                     /* If there are no down spans, just add the overlapping area to the a_and_b list */
-                    if(span_a->down==NULL) {
+                    if(span_a->down == NULL) {
                         /* Merge/add overlapped part with/to a_and_b list */
-                        if(H5S_hyper_append_span(&last_a_and_b,a_and_b,span_b->low,span_a->high,NULL,NULL)==FAIL)
-                            HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
+                        if(H5S__hyper_append_span(&last_a_and_b, a_and_b, span_b->low, span_a->high, NULL, NULL) < 0)
+                            HGOTO_ERROR(H5E_DATASPACE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
                     } /* end if */
                     /* If there are down spans, check for the overlap in them and add to each appropriate list */
                     else {
                         /* NULL out the temporary pointers to clipped areas in down spans */
-                        down_a_not_b=NULL;
-                        down_a_and_b=NULL;
-                        down_b_not_a=NULL;
+                        down_a_not_b = NULL;
+                        down_a_and_b = NULL;
+                        down_b_not_a = NULL;
 
                         /* Check for overlaps in the 'down spans' of span 'a' & 'b' */
-                        if(H5S_hyper_clip_spans(span_a->down,span_b->down,&down_a_not_b,&down_a_and_b,&down_b_not_a)<0)
+                        if(H5S__hyper_clip_spans(span_a->down,span_b->down,&down_a_not_b,&down_a_and_b,&down_b_not_a)<0)
                             HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCLIP, FAIL, "can't clip hyperslab information")
 
                         /* Check for additions to the a_not_b list */
-                        if(down_a_not_b!=NULL) {
+                        if(down_a_not_b) {
                             /* Merge/add overlapped part with/to a_not_b list */
-                            if(H5S_hyper_append_span(&last_a_not_b,a_not_b,span_b->low,span_a->high,down_a_not_b,NULL)==FAIL)
+                            if(H5S__hyper_append_span(&last_a_not_b,a_not_b,span_b->low,span_a->high,down_a_not_b,NULL)==FAIL)
                                 HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                             /* Release the down span tree generated */
-                            H5S_hyper_free_span_info(down_a_not_b);
+                            H5S__hyper_free_span_info(down_a_not_b);
                         } /* end if */
 
                         /* Check for additions to the a_and_b list */
-                        if(down_a_and_b!=NULL) {
+                        if(down_a_and_b) {
                             /* Merge/add overlapped part with/to a_and_b list */
-                            if(H5S_hyper_append_span(&last_a_and_b,a_and_b,span_b->low,span_a->high,down_a_and_b,NULL)==FAIL)
+                            if(H5S__hyper_append_span(&last_a_and_b,a_and_b,span_b->low,span_a->high,down_a_and_b,NULL)==FAIL)
                                 HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                             /* Release the down span tree generated */
-                            H5S_hyper_free_span_info(down_a_and_b);
+                            H5S__hyper_free_span_info(down_a_and_b);
                         } /* end if */
 
                         /* Check for additions to the b_not_a list */
-                        if(down_b_not_a!=NULL) {
+                        if(down_b_not_a) {
                             /* Merge/add overlapped part with/to b_not_a list */
-                            if(H5S_hyper_append_span(&last_b_not_a,b_not_a,span_b->low,span_a->high,down_b_not_a,NULL)==FAIL)
+                            if(H5S__hyper_append_span(&last_b_not_a,b_not_a,span_b->low,span_a->high,down_b_not_a,NULL)==FAIL)
                                 HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                             /* Release the down span tree generated */
-                            H5S_hyper_free_span_info(down_b_not_a);
+                            H5S__hyper_free_span_info(down_b_not_a);
                         } /* end if */
                     } /* end else */
 
@@ -5105,21 +5105,21 @@ H5S_hyper_clip_spans (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_info_t *b_s
                     /* Check if there is actually an upper part of span 'b' to split off */
                     if(span_a->high<span_b->high) {
                         /* Allocate new span node for upper part of span 'b' */
-                        if((tmp_span = H5S_hyper_new_span(span_a->high+1,span_b->high,span_b->down,span_b->next))==NULL)
+                        if(NULL == (tmp_span = H5S__hyper_new_span(span_a->high + 1, span_b->high, span_b->down, span_b->next)))
                             HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't allocate hyperslab span")
 
                         /* Advance span 'a' */
-                        H5S_hyper_recover_span(&recover_a,&span_a,span_a->next);
+                        H5S__hyper_recover_span(&recover_a,&span_a,span_a->next);
 
                         /* Make upper part of span 'b' into new span 'b' */
-                        H5S_hyper_recover_span(&recover_b,&span_b,tmp_span);
-                        recover_b=1;
+                        H5S__hyper_recover_span(&recover_b,&span_b,tmp_span);
+                        recover_b = TRUE;
                     } /* end if */
                     /* No upper part of span 'b' to split */
                     else {
                         /* Advance both 'a' and 'b' */
-                        H5S_hyper_recover_span(&recover_a,&span_a,span_a->next);
-                        H5S_hyper_recover_span(&recover_b,&span_b,span_b->next);
+                        H5S__hyper_recover_span(&recover_a,&span_a,span_a->next);
+                        H5S__hyper_recover_span(&recover_b,&span_b,span_b->next);
                     } /* end else */
                 } /* end if */
                 /* Check if span 'a' overlaps the lower & upper bound */
@@ -5127,11 +5127,11 @@ H5S_hyper_clip_spans (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_info_t *b_s
                 /*    AAAAAAAAAAAAAAAAAAAAA              */
                 /* <-----------------------------------> */
                 /*             BBBBBBBBBB                */
-                else if(span_a->low<span_b->low && span_a->high>span_b->high) {
+                else if(span_a->low < span_b->low && span_a->high > span_b->high) {
                     /* Split off lower part of span 'a' at lower span of span 'b' */
 
                     /* Merge/add lower part of span 'a' with/to a_not_b list */
-                    if(H5S_hyper_append_span(&last_a_not_b,a_not_b,span_a->low,span_b->low-1,span_a->down,NULL)==FAIL)
+                    if(H5S__hyper_append_span(&last_a_not_b,a_not_b,span_a->low,span_b->low-1,span_a->down,NULL)==FAIL)
                         HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                     /* Check for overlaps between middle part of span 'a' and span 'b' */
@@ -5140,77 +5140,77 @@ H5S_hyper_clip_spans (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_info_t *b_s
                     HDassert((span_a->down != NULL && span_b->down != NULL) || (span_a->down == NULL && span_b->down == NULL));
 
                     /* If there are no down spans, just add the overlapping area to the a_and_b list */
-                    if(span_a->down==NULL) {
+                    if(span_a->down == NULL) {
                         /* Merge/add overlapped part with/to a_and_b list */
-                        if(H5S_hyper_append_span(&last_a_and_b,a_and_b,span_b->low,span_b->high,NULL,NULL)==FAIL)
+                        if(H5S__hyper_append_span(&last_a_and_b,a_and_b,span_b->low,span_b->high,NULL,NULL)==FAIL)
                             HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
                     } /* end if */
                     /* If there are down spans, check for the overlap in them and add to each appropriate list */
                     else {
                         /* NULL out the temporary pointers to clipped areas in down spans */
-                        down_a_not_b=NULL;
-                        down_a_and_b=NULL;
-                        down_b_not_a=NULL;
+                        down_a_not_b = NULL;
+                        down_a_and_b = NULL;
+                        down_b_not_a = NULL;
 
                         /* Check for overlaps in the 'down spans' of span 'a' & 'b' */
-                        if(H5S_hyper_clip_spans(span_a->down,span_b->down,&down_a_not_b,&down_a_and_b,&down_b_not_a)<0)
+                        if(H5S__hyper_clip_spans(span_a->down,span_b->down,&down_a_not_b,&down_a_and_b,&down_b_not_a)<0)
                             HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCLIP, FAIL, "can't clip hyperslab information")
 
                         /* Check for additions to the a_not_b list */
-                        if(down_a_not_b!=NULL) {
+                        if(down_a_not_b) {
                             /* Merge/add overlapped part with/to a_not_b list */
-                            if(H5S_hyper_append_span(&last_a_not_b,a_not_b,span_b->low,span_b->high,down_a_not_b,NULL)==FAIL)
+                            if(H5S__hyper_append_span(&last_a_not_b,a_not_b,span_b->low,span_b->high,down_a_not_b,NULL)==FAIL)
                                 HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                             /* Release the down span tree generated */
-                            H5S_hyper_free_span_info(down_a_not_b);
+                            H5S__hyper_free_span_info(down_a_not_b);
                         } /* end if */
 
                         /* Check for additions to the a_and_b list */
-                        if(down_a_and_b!=NULL) {
+                        if(down_a_and_b) {
                             /* Merge/add overlapped part with/to a_and_b list */
-                            if(H5S_hyper_append_span(&last_a_and_b,a_and_b,span_b->low,span_b->high,down_a_and_b,NULL)==FAIL)
+                            if(H5S__hyper_append_span(&last_a_and_b,a_and_b,span_b->low,span_b->high,down_a_and_b,NULL)==FAIL)
                                 HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                             /* Release the down span tree generated */
-                            H5S_hyper_free_span_info(down_a_and_b);
+                            H5S__hyper_free_span_info(down_a_and_b);
                         } /* end if */
 
                         /* Check for additions to the b_not_a list */
-                        if(down_b_not_a!=NULL) {
+                        if(down_b_not_a) {
                             /* Merge/add overlapped part with/to b_not_a list */
-                            if(H5S_hyper_append_span(&last_b_not_a,b_not_a,span_b->low,span_b->high,down_b_not_a,NULL)==FAIL)
+                            if(H5S__hyper_append_span(&last_b_not_a,b_not_a,span_b->low,span_b->high,down_b_not_a,NULL)==FAIL)
                                 HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                             /* Release the down span tree generated */
-                            H5S_hyper_free_span_info(down_b_not_a);
+                            H5S__hyper_free_span_info(down_b_not_a);
                         } /* end if */
                     } /* end else */
 
                     /* Split off upper part of span 'a' at upper span of span 'b' */
 
                     /* Allocate new span node for upper part of span 'a' */
-                    if((tmp_span = H5S_hyper_new_span(span_b->high+1,span_a->high,span_a->down,span_a->next))==NULL)
-                        HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't allocate hyperslab span")
+                    if(NULL == (tmp_span = H5S__hyper_new_span(span_b->high + 1, span_a->high, span_a->down, span_a->next)))
+                        HGOTO_ERROR(H5E_DATASPACE, H5E_NOSPACE, FAIL, "can't allocate hyperslab span")
 
                     /* Make upper part of span 'a' the new span 'a' */
-                    H5S_hyper_recover_span(&recover_a,&span_a,tmp_span);
-                    recover_a=1;
+                    H5S__hyper_recover_span(&recover_a,&span_a,tmp_span);
+                    recover_a = TRUE;
 
                     /* Advance span 'b' */
-                    H5S_hyper_recover_span(&recover_b,&span_b,span_b->next);
+                    H5S__hyper_recover_span(&recover_b,&span_b,span_b->next);
                 } /* end if */
                 /* Check if span 'a' is entirely within span 'b' */
                 /*                AAAAA                  */
                 /* <-----------------------------------> */
                 /*             BBBBBBBBBB                */
-                else if(span_a->low>=span_b->low && span_a->high<=span_b->high) {
+                else if(span_a->low >= span_b->low && span_a->high <= span_b->high) {
                     /* Split off lower part of span 'b' at lower span of span 'a' */
 
                     /* Check if there is actually a lower part of span 'b' to split off */
-                    if(span_a->low>span_b->low) {
+                    if(span_a->low > span_b->low) {
                         /* Merge/add lower part of span 'b' with/to b_not_a list */
-                        if(H5S_hyper_append_span(&last_b_not_a,b_not_a,span_b->low,span_a->low-1,span_b->down,NULL)==FAIL)
+                        if(H5S__hyper_append_span(&last_b_not_a,b_not_a,span_b->low,span_a->low-1,span_b->down,NULL)==FAIL)
                             HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
                     } /* end if */
                     else {
@@ -5223,50 +5223,50 @@ H5S_hyper_clip_spans (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_info_t *b_s
                     HDassert((span_a->down != NULL && span_b->down != NULL) || (span_a->down == NULL && span_b->down == NULL));
 
                     /* If there are no down spans, just add the overlapping area to the a_and_b list */
-                    if(span_a->down==NULL) {
+                    if(span_a->down == NULL) {
                         /* Merge/add overlapped part with/to a_and_b list */
-                        if(H5S_hyper_append_span(&last_a_and_b,a_and_b,span_a->low,span_a->high,NULL,NULL)==FAIL)
+                        if(H5S__hyper_append_span(&last_a_and_b,a_and_b,span_a->low,span_a->high,NULL,NULL)==FAIL)
                             HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
                     } /* end if */
                     /* If there are down spans, check for the overlap in them and add to each appropriate list */
                     else {
                         /* NULL out the temporary pointers to clipped areas in down spans */
-                        down_a_not_b=NULL;
-                        down_a_and_b=NULL;
-                        down_b_not_a=NULL;
+                        down_a_not_b = NULL;
+                        down_a_and_b = NULL;
+                        down_b_not_a = NULL;
 
                         /* Check for overlaps in the 'down spans' of span 'a' & 'b' */
-                        if(H5S_hyper_clip_spans(span_a->down,span_b->down,&down_a_not_b,&down_a_and_b,&down_b_not_a)<0)
+                        if(H5S__hyper_clip_spans(span_a->down,span_b->down,&down_a_not_b,&down_a_and_b,&down_b_not_a)<0)
                             HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCLIP, FAIL, "can't clip hyperslab information")
 
                         /* Check for additions to the a_not_b list */
-                        if(down_a_not_b!=NULL) {
+                        if(down_a_not_b) {
                             /* Merge/add overlapped part with/to a_not_b list */
-                            if(H5S_hyper_append_span(&last_a_not_b,a_not_b,span_a->low,span_a->high,down_a_not_b,NULL)==FAIL)
+                            if(H5S__hyper_append_span(&last_a_not_b,a_not_b,span_a->low,span_a->high,down_a_not_b,NULL)==FAIL)
                                 HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                             /* Release the down span tree generated */
-                            H5S_hyper_free_span_info(down_a_not_b);
+                            H5S__hyper_free_span_info(down_a_not_b);
                         } /* end if */
 
                         /* Check for additions to the a_and_b list */
                         if(down_a_and_b!=NULL) {
                             /* Merge/add overlapped part with/to a_and_b list */
-                            if(H5S_hyper_append_span(&last_a_and_b,a_and_b,span_a->low,span_a->high,down_a_and_b,NULL)==FAIL)
+                            if(H5S__hyper_append_span(&last_a_and_b,a_and_b,span_a->low,span_a->high,down_a_and_b,NULL)==FAIL)
                                 HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                             /* Release the down span tree generated */
-                            H5S_hyper_free_span_info(down_a_and_b);
+                            H5S__hyper_free_span_info(down_a_and_b);
                         } /* end if */
 
                         /* Check for additions to the b_not_a list */
                         if(down_b_not_a!=NULL) {
                             /* Merge/add overlapped part with/to b_not_a list */
-                            if(H5S_hyper_append_span(&last_b_not_a,b_not_a,span_a->low,span_a->high,down_b_not_a,NULL)==FAIL)
+                            if(H5S__hyper_append_span(&last_b_not_a,b_not_a,span_a->low,span_a->high,down_b_not_a,NULL)==FAIL)
                                 HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                             /* Release the down span tree generated */
-                            H5S_hyper_free_span_info(down_b_not_a);
+                            H5S__hyper_free_span_info(down_b_not_a);
                         } /* end if */
                     } /* end else */
 
@@ -5275,20 +5275,20 @@ H5S_hyper_clip_spans (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_info_t *b_s
                         /* Split off upper part of span 'b' at upper span of span 'a' */
 
                         /* Allocate new span node for upper part of spans 'a' */
-                        if((tmp_span = H5S_hyper_new_span(span_a->high+1,span_b->high,span_b->down,span_b->next))==NULL)
+                        if(NULL == (tmp_span = H5S__hyper_new_span(span_a->high + 1, span_b->high, span_b->down, span_b->next)))
                             HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't allocate hyperslab span")
 
                         /* And advance span 'a' */
-                        H5S_hyper_recover_span(&recover_a,&span_a,span_a->next);
+                        H5S__hyper_recover_span(&recover_a,&span_a,span_a->next);
 
                         /* Make upper part of span 'b' the new span 'b' */
-                        H5S_hyper_recover_span(&recover_b,&span_b,tmp_span);
+                        H5S__hyper_recover_span(&recover_b,&span_b,tmp_span);
                         recover_b=1;
                     } /* end if */
                     else {
                         /* Advance both span 'a' & span 'b' */
-                        H5S_hyper_recover_span(&recover_a,&span_a,span_a->next);
-                        H5S_hyper_recover_span(&recover_b,&span_b,span_b->next);
+                        H5S__hyper_recover_span(&recover_a,&span_a,span_a->next);
+                        H5S__hyper_recover_span(&recover_b,&span_b,span_b->next);
                     } /* end else */
                 } /* end if */
                 /* Check if span 'a' overlaps only the upper bound */
@@ -5302,7 +5302,7 @@ H5S_hyper_clip_spans (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_info_t *b_s
                         /* Split off lower part of span 'b' at lower span of span 'a' */
 
                         /* Merge/add lower part of span 'b' with/to b_not_a list */
-                        if(H5S_hyper_append_span(&last_b_not_a,b_not_a,span_b->low,span_a->low-1,span_b->down,NULL)==FAIL)
+                        if(H5S__hyper_append_span(&last_b_not_a,b_not_a,span_b->low,span_a->low-1,span_b->down,NULL)==FAIL)
                             HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
                     } /* end if */
                     else {
@@ -5315,65 +5315,65 @@ H5S_hyper_clip_spans (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_info_t *b_s
                     HDassert((span_a->down != NULL && span_b->down != NULL) || (span_a->down == NULL && span_b->down == NULL));
 
                     /* If there are no down spans, just add the overlapping area to the a_and_b list */
-                    if(span_a->down==NULL) {
+                    if(span_a->down == NULL) {
                         /* Merge/add overlapped part with/to a_and_b list */
-                        if(H5S_hyper_append_span(&last_a_and_b,a_and_b,span_a->low,span_b->high,NULL,NULL)==FAIL)
+                        if(H5S__hyper_append_span(&last_a_and_b,a_and_b,span_a->low,span_b->high,NULL,NULL)==FAIL)
                             HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
                     } /* end if */
                     /* If there are down spans, check for the overlap in them and add to each appropriate list */
                     else {
                         /* NULL out the temporary pointers to clipped areas in down spans */
-                        down_a_not_b=NULL;
-                        down_a_and_b=NULL;
-                        down_b_not_a=NULL;
+                        down_a_not_b = NULL;
+                        down_a_and_b = NULL;
+                        down_b_not_a = NULL;
 
                         /* Check for overlaps in the 'down spans' of span 'a' & 'b' */
-                        if(H5S_hyper_clip_spans(span_a->down,span_b->down,&down_a_not_b,&down_a_and_b,&down_b_not_a)<0)
+                        if(H5S__hyper_clip_spans(span_a->down,span_b->down,&down_a_not_b,&down_a_and_b,&down_b_not_a)<0)
                             HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCLIP, FAIL, "can't clip hyperslab information")
 
                         /* Check for additions to the a_not_b list */
-                        if(down_a_not_b!=NULL) {
+                        if(down_a_not_b) {
                             /* Merge/add overlapped part with/to a_not_b list */
-                            if(H5S_hyper_append_span(&last_a_not_b,a_not_b,span_a->low,span_b->high,down_a_not_b,NULL)==FAIL)
+                            if(H5S__hyper_append_span(&last_a_not_b,a_not_b,span_a->low,span_b->high,down_a_not_b,NULL)==FAIL)
                                 HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                             /* Release the down span tree generated */
-                            H5S_hyper_free_span_info(down_a_not_b);
+                            H5S__hyper_free_span_info(down_a_not_b);
                         } /* end if */
 
                         /* Check for additions to the a_and_b list */
                         if(down_a_and_b!=NULL) {
                             /* Merge/add overlapped part with/to a_and_b list */
-                            if(H5S_hyper_append_span(&last_a_and_b,a_and_b,span_a->low,span_b->high,down_a_and_b,NULL)==FAIL)
+                            if(H5S__hyper_append_span(&last_a_and_b,a_and_b,span_a->low,span_b->high,down_a_and_b,NULL)==FAIL)
                                 HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                             /* Release the down span tree generated */
-                            H5S_hyper_free_span_info(down_a_and_b);
+                            H5S__hyper_free_span_info(down_a_and_b);
                         } /* end if */
 
                         /* Check for additions to the b_not_a list */
-                        if(down_b_not_a!=NULL) {
+                        if(down_b_not_a) {
                             /* Merge/add overlapped part with/to b_not_a list */
-                            if(H5S_hyper_append_span(&last_b_not_a,b_not_a,span_a->low,span_b->high,down_b_not_a,NULL)==FAIL)
+                            if(H5S__hyper_append_span(&last_b_not_a,b_not_a,span_a->low,span_b->high,down_b_not_a,NULL)==FAIL)
                                 HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                             /* Release the down span tree generated */
-                            H5S_hyper_free_span_info(down_b_not_a);
+                            H5S__hyper_free_span_info(down_b_not_a);
                         } /* end if */
                     } /* end else */
 
                     /* Split off upper part of span 'a' at upper span of span 'b' */
 
                     /* Allocate new span node for upper part of span 'a' */
-                    if((tmp_span = H5S_hyper_new_span(span_b->high+1,span_a->high,span_a->down,span_a->next))==NULL)
+                    if(NULL == (tmp_span = H5S__hyper_new_span(span_b->high + 1, span_a->high, span_a->down, span_a->next)))
                         HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't allocate hyperslab span")
 
                     /* Make upper part of span 'a' into new span 'a' */
-                    H5S_hyper_recover_span(&recover_a,&span_a,tmp_span);
+                    H5S__hyper_recover_span(&recover_a,&span_a,tmp_span);
                     recover_a=1;
 
                     /* Advance span 'b' */
-                    H5S_hyper_recover_span(&recover_b,&span_b,span_b->next);
+                    H5S__hyper_recover_span(&recover_b,&span_b,span_b->next);
                 } /* end if */
                 /* span 'a' must be entirely above span 'b' */
                 /*                         AAAAA         */
@@ -5383,38 +5383,38 @@ H5S_hyper_clip_spans (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_info_t *b_s
                     /* Copy span 'b' and add to b_not_a list */
 
                     /* Merge/add span 'b' with/to b_not_a list */
-                    if(H5S_hyper_append_span(&last_b_not_a,b_not_a,span_b->low,span_b->high,span_b->down,NULL)==FAIL)
+                    if(H5S__hyper_append_span(&last_b_not_a,b_not_a,span_b->low,span_b->high,span_b->down,NULL)==FAIL)
                         HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                     /* Advance span 'b', leave span 'a' */
-                    H5S_hyper_recover_span(&recover_b,&span_b,span_b->next);
+                    H5S__hyper_recover_span(&recover_b,&span_b,span_b->next);
                 } /* end else */
             } /* end while */
 
             /* Clean up 'a' spans which haven't been covered yet */
-            if(span_a!=NULL && span_b==NULL) {
-                while(span_a!=NULL) {
+            if(span_a != NULL && span_b == NULL) {
+                while(span_a != NULL) {
                     /* Copy span 'a' and add to a_not_b list */
 
                     /* Merge/add span 'a' with/to a_not_b list */
-                    if(H5S_hyper_append_span(&last_a_not_b,a_not_b,span_a->low,span_a->high,span_a->down,NULL)==FAIL)
+                    if(H5S__hyper_append_span(&last_a_not_b,a_not_b,span_a->low,span_a->high,span_a->down,NULL)==FAIL)
                         HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                     /* Advance to the next 'a' span */
-                    H5S_hyper_recover_span(&recover_a,&span_a,span_a->next);
+                    H5S__hyper_recover_span(&recover_a,&span_a,span_a->next);
                 } /* end while */
             } /* end if */
             /* Clean up 'b' spans which haven't been covered yet */
-            else if(span_a==NULL && span_b!=NULL) {
-                while(span_b!=NULL) {
+            else if(span_a == NULL && span_b != NULL) {
+                while(span_b != NULL) {
                     /* Copy span 'b' and add to b_not_a list */
 
                     /* Merge/add span 'b' with/to b_not_a list */
-                    if(H5S_hyper_append_span(&last_b_not_a,b_not_a,span_b->low,span_b->high,span_b->down,NULL)==FAIL)
+                    if(H5S__hyper_append_span(&last_b_not_a,b_not_a,span_b->low,span_b->high,span_b->down,NULL)==FAIL)
                         HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                     /* Advance to the next 'b' span */
-                    H5S_hyper_recover_span(&recover_b,&span_b,span_b->next);
+                    H5S__hyper_recover_span(&recover_b,&span_b,span_b->next);
                 } /* end while */
             } /* end if */
         } /* end else */
@@ -5422,16 +5422,16 @@ H5S_hyper_clip_spans (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_info_t *b_s
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_clip_spans() */
+} /* end H5S__hyper_clip_spans() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_merge_spans_helper
+    H5S__hyper_merge_spans_helper
  PURPOSE
     Merge two hyperslab span tree together
  USAGE
-    H5S_hyper_span_info_t *H5S_hyper_merge_spans_helper(a_spans, b_spans)
+    H5S_hyper_span_info_t *H5S__hyper_merge_spans_helper(a_spans, b_spans)
         H5S_hyper_span_info_t *a_spans; IN: First hyperslab spans to merge
                                                 together
         H5S_hyper_span_info_t *b_spans; IN: Second hyperslab spans to merge
@@ -5447,104 +5447,104 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static H5S_hyper_span_info_t *
-H5S_hyper_merge_spans_helper (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_info_t *b_spans)
+H5S__hyper_merge_spans_helper(H5S_hyper_span_info_t *a_spans, H5S_hyper_span_info_t *b_spans)
 {
-    H5S_hyper_span_info_t *merged_spans=NULL; /* Pointer to the merged span tree */
+    H5S_hyper_span_info_t *merged_spans = NULL; /* Pointer to the merged span tree */
     H5S_hyper_span_info_t *tmp_spans;   /* Pointer to temporary new span tree */
     H5S_hyper_span_t *tmp_span;         /* Pointer to temporary new span */
     H5S_hyper_span_t *span_a;           /* Pointer to current span 'a' working on */
     H5S_hyper_span_t *span_b;           /* Pointer to current span 'b' working on */
     H5S_hyper_span_t *prev_span_merge;  /* Pointer to previous merged span */
-    unsigned recover_a, recover_b;         /* Flags to indicate when to recover temporary spans */
+    hbool_t recover_a, recover_b;         /* Flags to indicate when to recover temporary spans */
     H5S_hyper_span_info_t *ret_value = NULL;    /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC
 
     /* Make certain both 'a' & 'b' spans have down span trees or neither does */
     HDassert((a_spans != NULL && b_spans != NULL) || (a_spans == NULL && b_spans == NULL));
 
     /* Check if the span trees for the 'a' span and the 'b' span are the same */
-    if(H5S_hyper_cmp_spans(a_spans,b_spans)==TRUE) {
-        if(a_spans==NULL)
-            merged_spans=NULL;
+    if(H5S__hyper_cmp_spans(a_spans, b_spans)) {
+        if(a_spans == NULL)
+            merged_spans = NULL;
         else {
             /* Copy one of the span trees to return */
-            if((merged_spans=H5S_hyper_copy_span(a_spans))==NULL)
+            if(NULL == (merged_spans = H5S__hyper_copy_span(a_spans)))
                 HGOTO_ERROR(H5E_INTERNAL, H5E_CANTCOPY, NULL, "can't copy hyperslab span tree")
         } /* end else */
     } /* end if */
     else {
         /* Get the pointers to the 'a' and 'b' span lists */
-        span_a=a_spans->head;
-        span_b=b_spans->head;
+        span_a = a_spans->head;
+        span_b = b_spans->head;
 
         /* Set the pointer to the previous spans */
-        prev_span_merge=NULL;
+        prev_span_merge = NULL;
 
         /* No spans to recover yet */
-        recover_a=recover_b=0;
+        recover_a = recover_b = FALSE;
 
         /* Work through the list of spans in the new list */
-        while(span_a!=NULL && span_b!=NULL) {
+        while(span_a != NULL && span_b != NULL) {
             /* Check if the 'a' span is completely before 'b' span */
             /*    AAAAAAA                            */
             /* <-----------------------------------> */
             /*             BBBBBBBBBB                */
-            if(span_a->high<span_b->low) {
+            if(span_a->high < span_b->low) {
                 /* Merge/add span 'a' with/to the merged spans */
-                if(H5S_hyper_append_span(&prev_span_merge,&merged_spans,span_a->low,span_a->high,span_a->down,NULL)==FAIL)
+                if(H5S__hyper_append_span(&prev_span_merge,&merged_spans,span_a->low,span_a->high,span_a->down,NULL)==FAIL)
                     HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, NULL, "can't allocate hyperslab span")
 
                 /* Advance span 'a' */
-                H5S_hyper_recover_span(&recover_a,&span_a,span_a->next);
+                H5S__hyper_recover_span(&recover_a,&span_a,span_a->next);
             } /* end if */
             /* Check if span 'a' overlaps only the lower bound */
             /*  of span 'b', up to the upper bound of span 'b' */
             /*    AAAAAAAAAAAA                       */
             /* <-----------------------------------> */
             /*             BBBBBBBBBB                */
-            else if(span_a->low<span_b->low && (span_a->high>=span_b->low && span_a->high<=span_b->high)) {
+            else if(span_a->low < span_b->low && (span_a->high >= span_b->low && span_a->high <= span_b->high)) {
                 /* Check if span 'a' and span 'b' down spans are equal */
-                if(H5S_hyper_cmp_spans(span_a->down,span_b->down)==TRUE) {
+                if(H5S__hyper_cmp_spans(span_a->down, span_b->down)) {
                     /* Merge/add copy of span 'a' with/to merged spans */
-                    if(H5S_hyper_append_span(&prev_span_merge,&merged_spans,span_a->low,span_a->high,span_a->down,NULL)==FAIL)
+                    if(H5S__hyper_append_span(&prev_span_merge,&merged_spans,span_a->low,span_a->high,span_a->down,NULL)==FAIL)
                         HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, NULL, "can't allocate hyperslab span")
                 } /* end if */
                 else {
                     /* Merge/add lower part of span 'a' with/to merged spans */
-                    if(H5S_hyper_append_span(&prev_span_merge,&merged_spans,span_a->low,span_b->low-1,span_a->down,NULL)==FAIL)
+                    if(H5S__hyper_append_span(&prev_span_merge,&merged_spans,span_a->low,span_b->low-1,span_a->down,NULL)==FAIL)
                         HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, NULL, "can't allocate hyperslab span")
 
                     /* Get merged span tree for overlapped section */
-                    tmp_spans=H5S_hyper_merge_spans_helper(span_a->down,span_b->down);
+                    tmp_spans = H5S__hyper_merge_spans_helper(span_a->down,span_b->down);
 
                     /* Merge/add overlapped section to merged spans */
-                    if(H5S_hyper_append_span(&prev_span_merge,&merged_spans,span_b->low,span_a->high,tmp_spans,NULL)==FAIL)
+                    if(H5S__hyper_append_span(&prev_span_merge,&merged_spans,span_b->low,span_a->high,tmp_spans,NULL)==FAIL)
                         HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, NULL, "can't allocate hyperslab span")
 
                     /* Release merged span tree for overlapped section */
-                    H5S_hyper_free_span_info(tmp_spans);
+                    H5S__hyper_free_span_info(tmp_spans);
                 } /* end else */
 
                 /* Check if there is an upper part of span 'b' */
-                if(span_a->high<span_b->high) {
+                if(span_a->high < span_b->high) {
                     /* Copy upper part of span 'b' as new span 'b' */
 
                     /* Allocate new span node to append to list */
-                    if((tmp_span = H5S_hyper_new_span(span_a->high+1,span_b->high,span_b->down,span_b->next))==NULL)
+                    if((tmp_span = H5S__hyper_new_span(span_a->high+1,span_b->high,span_b->down,span_b->next))==NULL)
                         HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "can't allocate hyperslab span")
 
                     /* Advance span 'a' */
-                    H5S_hyper_recover_span(&recover_a,&span_a,span_a->next);
+                    H5S__hyper_recover_span(&recover_a,&span_a,span_a->next);
 
                     /* Set new span 'b' to tmp_span */
-                    H5S_hyper_recover_span(&recover_b,&span_b,tmp_span);
-                    recover_b=1;
+                    H5S__hyper_recover_span(&recover_b,&span_b,tmp_span);
+                    recover_b = TRUE;
                 } /* end if */
                 else {
                     /* Advance both span 'a' & 'b' */
-                    H5S_hyper_recover_span(&recover_a,&span_a,span_a->next);
-                    H5S_hyper_recover_span(&recover_b,&span_b,span_b->next);
+                    H5S__hyper_recover_span(&recover_a,&span_a,span_a->next);
+                    H5S__hyper_recover_span(&recover_b,&span_b,span_b->next);
                 } /* end else */
             } /* end if */
             /* Check if span 'a' overlaps the lower & upper bound */
@@ -5552,58 +5552,58 @@ H5S_hyper_merge_spans_helper (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_inf
             /*    AAAAAAAAAAAAAAAAAAAAA              */
             /* <-----------------------------------> */
             /*             BBBBBBBBBB                */
-            else if(span_a->low<span_b->low && span_a->high>span_b->high) {
+            else if(span_a->low < span_b->low && span_a->high > span_b->high) {
                 /* Check if span 'a' and span 'b' down spans are equal */
-                if(H5S_hyper_cmp_spans(span_a->down,span_b->down)==TRUE) {
+                if(H5S__hyper_cmp_spans(span_a->down, span_b->down)) {
                     /* Merge/add copy of lower & middle parts of span 'a' to merged spans */
-                    if(H5S_hyper_append_span(&prev_span_merge,&merged_spans,span_a->low,span_b->high,span_a->down,NULL)==FAIL)
+                    if(H5S__hyper_append_span(&prev_span_merge,&merged_spans,span_a->low,span_b->high,span_a->down,NULL)==FAIL)
                         HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, NULL, "can't allocate hyperslab span")
                 } /* end if */
                 else {
                     /* Merge/add lower part of span 'a' to merged spans */
-                    if(H5S_hyper_append_span(&prev_span_merge,&merged_spans,span_a->low,span_b->low-1,span_a->down,NULL)==FAIL)
+                    if(H5S__hyper_append_span(&prev_span_merge,&merged_spans,span_a->low,span_b->low-1,span_a->down,NULL)==FAIL)
                         HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, NULL, "can't allocate hyperslab span")
 
                     /* Get merged span tree for overlapped section */
-                    tmp_spans=H5S_hyper_merge_spans_helper(span_a->down,span_b->down);
+                    tmp_spans = H5S__hyper_merge_spans_helper(span_a->down,span_b->down);
 
                     /* Merge/add overlapped section to merged spans */
-                    if(H5S_hyper_append_span(&prev_span_merge,&merged_spans,span_b->low,span_b->high,tmp_spans,NULL)==FAIL)
+                    if(H5S__hyper_append_span(&prev_span_merge,&merged_spans,span_b->low,span_b->high,tmp_spans,NULL)==FAIL)
                         HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, NULL, "can't allocate hyperslab span")
 
                     /* Release merged span tree for overlapped section */
-                    H5S_hyper_free_span_info(tmp_spans);
+                    H5S__hyper_free_span_info(tmp_spans);
                 } /* end else */
 
                 /* Copy upper part of span 'a' as new span 'a' (remember to free) */
 
                 /* Allocate new span node to append to list */
-                if((tmp_span = H5S_hyper_new_span(span_b->high+1,span_a->high,span_a->down,span_a->next))==NULL)
-                    HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "can't allocate hyperslab span")
+                if(NULL == (tmp_span = H5S__hyper_new_span(span_b->high + 1, span_a->high, span_a->down, span_a->next)))
+                    HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, NULL, "can't allocate hyperslab span")
 
                 /* Set new span 'a' to tmp_span */
-                H5S_hyper_recover_span(&recover_a,&span_a,tmp_span);
-                recover_a=1;
+                H5S__hyper_recover_span(&recover_a,&span_a,tmp_span);
+                recover_a = TRUE;
 
                 /* Advance span 'b' */
-                H5S_hyper_recover_span(&recover_b,&span_b,span_b->next);
+                H5S__hyper_recover_span(&recover_b,&span_b,span_b->next);
             } /* end if */
             /* Check if span 'a' is entirely within span 'b' */
             /*                AAAAA                  */
             /* <-----------------------------------> */
             /*             BBBBBBBBBB                */
-            else if(span_a->low>=span_b->low && span_a->high<=span_b->high) {
+            else if(span_a->low >= span_b->low && span_a->high <= span_b->high) {
                 /* Check if span 'a' and span 'b' down spans are equal */
-                if(H5S_hyper_cmp_spans(span_a->down,span_b->down)==TRUE) {
+                if(H5S__hyper_cmp_spans(span_a->down, span_b->down)) {
                     /* Merge/add copy of lower & middle parts of span 'b' to merged spans */
-                    if(H5S_hyper_append_span(&prev_span_merge,&merged_spans,span_b->low,span_a->high,span_a->down,NULL)==FAIL)
+                    if(H5S__hyper_append_span(&prev_span_merge,&merged_spans,span_b->low,span_a->high,span_a->down,NULL)==FAIL)
                         HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, NULL, "can't allocate hyperslab span")
                 } /* end if */
                 else {
                     /* Check if there is a lower part of span 'b' */
-                    if(span_a->low>span_b->low) {
+                    if(span_a->low > span_b->low) {
                         /* Merge/add lower part of span 'b' to merged spans */
-                        if(H5S_hyper_append_span(&prev_span_merge,&merged_spans,span_b->low,span_a->low-1,span_b->down,NULL)==FAIL)
+                        if(H5S__hyper_append_span(&prev_span_merge,&merged_spans,span_b->low,span_a->low-1,span_b->down,NULL)==FAIL)
                             HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, NULL, "can't allocate hyperslab span")
                     } /* end if */
                     else {
@@ -5611,35 +5611,35 @@ H5S_hyper_merge_spans_helper (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_inf
                     } /* end else */
 
                     /* Get merged span tree for overlapped section */
-                    tmp_spans=H5S_hyper_merge_spans_helper(span_a->down,span_b->down);
+                    tmp_spans = H5S__hyper_merge_spans_helper(span_a->down,span_b->down);
 
                     /* Merge/add overlapped section to merged spans */
-                    if(H5S_hyper_append_span(&prev_span_merge,&merged_spans,span_a->low,span_a->high,tmp_spans,NULL)==FAIL)
+                    if(H5S__hyper_append_span(&prev_span_merge,&merged_spans,span_a->low,span_a->high,tmp_spans,NULL)==FAIL)
                         HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, NULL, "can't allocate hyperslab span")
 
                     /* Release merged span tree for overlapped section */
-                    H5S_hyper_free_span_info(tmp_spans);
+                    H5S__hyper_free_span_info(tmp_spans);
                 } /* end else */
 
                 /* Check if there is an upper part of span 'b' */
-                if(span_a->high<span_b->high) {
+                if(span_a->high < span_b->high) {
                     /* Copy upper part of span 'b' as new span 'b' (remember to free) */
 
                     /* Allocate new span node to append to list */
-                    if((tmp_span = H5S_hyper_new_span(span_a->high+1,span_b->high,span_b->down,span_b->next))==NULL)
-                        HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "can't allocate hyperslab span")
+                    if(NULL == (tmp_span = H5S__hyper_new_span(span_a->high + 1, span_b->high, span_b->down, span_b->next)))
+                        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, NULL, "can't allocate hyperslab span")
 
                     /* Advance span 'a' */
-                    H5S_hyper_recover_span(&recover_a,&span_a,span_a->next);
+                    H5S__hyper_recover_span(&recover_a,&span_a,span_a->next);
 
                     /* Set new span 'b' to tmp_span */
-                    H5S_hyper_recover_span(&recover_b,&span_b,tmp_span);
-                    recover_b=1;
+                    H5S__hyper_recover_span(&recover_b,&span_b,tmp_span);
+                    recover_b = TRUE;
                 } /* end if */
                 else {
                     /* Advance both spans */
-                    H5S_hyper_recover_span(&recover_a,&span_a,span_a->next);
-                    H5S_hyper_recover_span(&recover_b,&span_b,span_b->next);
+                    H5S__hyper_recover_span(&recover_a,&span_a,span_a->next);
+                    H5S__hyper_recover_span(&recover_b,&span_b,span_b->next);
                 } /* end else */
             } /* end if */
             /* Check if span 'a' overlaps only the upper bound */
@@ -5647,18 +5647,18 @@ H5S_hyper_merge_spans_helper (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_inf
             /*                AAAAAAAAAA             */
             /* <-----------------------------------> */
             /*             BBBBBBBBBB                */
-            else if((span_a->low>=span_b->low && span_a->low<=span_b->high) && span_a->high>span_b->high) {
+            else if((span_a->low >= span_b->low && span_a->low <= span_b->high) && span_a->high > span_b->high) {
                 /* Check if span 'a' and span 'b' down spans are equal */
-                if(H5S_hyper_cmp_spans(span_a->down,span_b->down)==TRUE) {
+                if(H5S__hyper_cmp_spans(span_a->down, span_b->down)) {
                     /* Merge/add copy of span 'b' to merged spans if so */
-                    if(H5S_hyper_append_span(&prev_span_merge,&merged_spans,span_b->low,span_b->high,span_b->down,NULL)==FAIL)
+                    if(H5S__hyper_append_span(&prev_span_merge,&merged_spans,span_b->low,span_b->high,span_b->down,NULL)==FAIL)
                         HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, NULL, "can't allocate hyperslab span")
                 } /* end if */
                 else {
                     /* Check if there is a lower part of span 'b' */
-                    if(span_a->low>span_b->low) {
+                    if(span_a->low > span_b->low) {
                         /* Merge/add lower part of span 'b' to merged spans */
-                        if(H5S_hyper_append_span(&prev_span_merge,&merged_spans,span_b->low,span_a->low-1,span_b->down,NULL)==FAIL)
+                        if(H5S__hyper_append_span(&prev_span_merge,&merged_spans,span_b->low,span_a->low-1,span_b->down,NULL)==FAIL)
                             HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, NULL, "can't allocate hyperslab span")
                     } /* end if */
                     else {
@@ -5666,28 +5666,28 @@ H5S_hyper_merge_spans_helper (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_inf
                     } /* end else */
 
                     /* Get merged span tree for overlapped section */
-                    tmp_spans=H5S_hyper_merge_spans_helper(span_a->down,span_b->down);
+                    tmp_spans = H5S__hyper_merge_spans_helper(span_a->down,span_b->down);
 
                     /* Merge/add overlapped section to merged spans */
-                    if(H5S_hyper_append_span(&prev_span_merge,&merged_spans,span_a->low,span_b->high,tmp_spans,NULL)==FAIL)
+                    if(H5S__hyper_append_span(&prev_span_merge,&merged_spans,span_a->low,span_b->high,tmp_spans,NULL)==FAIL)
                         HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, NULL, "can't allocate hyperslab span")
 
                     /* Release merged span tree for overlapped section */
-                    H5S_hyper_free_span_info(tmp_spans);
+                    H5S__hyper_free_span_info(tmp_spans);
                 } /* end else */
 
                 /* Copy upper part of span 'a' as new span 'a' */
 
                 /* Allocate new span node to append to list */
-                if((tmp_span = H5S_hyper_new_span(span_b->high+1,span_a->high,span_a->down,span_a->next))==NULL)
-                    HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "can't allocate hyperslab span")
+                if(NULL == (tmp_span = H5S__hyper_new_span(span_b->high + 1, span_a->high, span_a->down, span_a->next)))
+                    HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, NULL, "can't allocate hyperslab span")
 
                 /* Set new span 'a' to tmp_span */
-                H5S_hyper_recover_span(&recover_a,&span_a,tmp_span);
-                recover_a=1;
+                H5S__hyper_recover_span(&recover_a,&span_a,tmp_span);
+                recover_a = TRUE;
 
                 /* Advance span 'b' */
-                H5S_hyper_recover_span(&recover_b,&span_b,span_b->next);
+                H5S__hyper_recover_span(&recover_b,&span_b,span_b->next);
             } /* end if */
             /* Span 'a' must be entirely above span 'b' */
             /*                         AAAAA         */
@@ -5695,35 +5695,35 @@ H5S_hyper_merge_spans_helper (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_inf
             /*             BBBBBBBBBB                */
             else {
                 /* Merge/add span 'b' with the merged spans */
-                if(H5S_hyper_append_span(&prev_span_merge,&merged_spans,span_b->low,span_b->high,span_b->down,NULL)==FAIL)
+                if(H5S__hyper_append_span(&prev_span_merge,&merged_spans,span_b->low,span_b->high,span_b->down,NULL)==FAIL)
                     HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, NULL, "can't allocate hyperslab span")
 
                 /* Advance span 'b' */
-                H5S_hyper_recover_span(&recover_b,&span_b,span_b->next);
+                H5S__hyper_recover_span(&recover_b,&span_b,span_b->next);
             } /* end else */
         } /* end while */
 
         /* Clean up 'a' spans which haven't been added to the list of merged spans */
-        if(span_a!=NULL && span_b==NULL) {
-            while(span_a!=NULL) {
+        if(span_a != NULL && span_b == NULL) {
+            while(span_a != NULL) {
                 /* Merge/add all 'a' spans into the merged spans */
-                if(H5S_hyper_append_span(&prev_span_merge,&merged_spans,span_a->low,span_a->high,span_a->down,NULL)==FAIL)
+                if(H5S__hyper_append_span(&prev_span_merge,&merged_spans,span_a->low,span_a->high,span_a->down,NULL)==FAIL)
                     HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, NULL, "can't allocate hyperslab span")
 
                 /* Advance to next 'a' span, until all processed */
-                H5S_hyper_recover_span(&recover_a,&span_a,span_a->next);
+                H5S__hyper_recover_span(&recover_a,&span_a,span_a->next);
             } /* end while */
         } /* end if */
 
         /* Clean up 'b' spans which haven't been added to the list of merged spans */
-        if(span_a==NULL && span_b!=NULL) {
-            while(span_b!=NULL) {
+        if(span_a == NULL && span_b != NULL) {
+            while(span_b != NULL) {
                 /* Merge/add all 'b' spans into the merged spans */
-                if(H5S_hyper_append_span(&prev_span_merge,&merged_spans,span_b->low,span_b->high,span_b->down,NULL)==FAIL)
+                if(H5S__hyper_append_span(&prev_span_merge,&merged_spans,span_b->low,span_b->high,span_b->down,NULL)==FAIL)
                     HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, NULL, "can't allocate hyperslab span")
 
                 /* Advance to next 'b' span, until all processed */
-                H5S_hyper_recover_span(&recover_b,&span_b,span_b->next);
+                H5S__hyper_recover_span(&recover_b,&span_b,span_b->next);
             } /* end while */
         } /* end if */
     } /* end else */
@@ -5732,23 +5732,21 @@ H5S_hyper_merge_spans_helper (H5S_hyper_span_info_t *a_spans, H5S_hyper_span_inf
     ret_value = merged_spans;
 
 done:
-    if(ret_value == NULL) {
-        if(merged_spans)
-            if(H5S_hyper_free_span_info(merged_spans) < 0)
-                HDONE_ERROR(H5E_INTERNAL, H5E_CANTFREE, NULL, "failed to release merged hyperslab spans")
-    } /* end if */
+    if(ret_value == NULL)
+        if(merged_spans && H5S__hyper_free_span_info(merged_spans) < 0)
+            HDONE_ERROR(H5E_INTERNAL, H5E_CANTFREE, NULL, "failed to release merged hyperslab spans")
 
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_merge_spans_helper() */
+} /* end H5S__hyper_merge_spans_helper() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_merge_spans
+    H5S__hyper_merge_spans
  PURPOSE
     Merge new hyperslab spans to existing hyperslab selection
  USAGE
-    herr_t H5S_hyper_merge_spans(space, new_spans, can_own)
+    herr_t H5S__hyper_merge_spans(space, new_spans, can_own)
         H5S_t *space;             IN: Dataspace to add new spans to hyperslab
                                         selection.
         H5S_hyper_span_t *new_spans;    IN: Span tree of new spans to add to
@@ -5768,7 +5766,7 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_merge_spans (H5S_t *space, H5S_hyper_span_info_t *new_spans, hbool_t can_own)
+H5S__hyper_merge_spans(H5S_t *space, H5S_hyper_span_info_t *new_spans, hbool_t can_own)
 {
     FUNC_ENTER_NOAPI_NOINIT_NOERR
 
@@ -5777,39 +5775,39 @@ H5S_hyper_merge_spans (H5S_t *space, H5S_hyper_span_info_t *new_spans, hbool_t c
     HDassert(new_spans);
 
     /* If this is the first span tree in the hyperslab selection, just use it */
-    if(space->select.sel_info.hslab->span_lst==NULL) {
+    if(space->select.sel_info.hslab->span_lst == NULL) {
         if(can_own)
-            space->select.sel_info.hslab->span_lst=new_spans;
+            space->select.sel_info.hslab->span_lst = new_spans;
         else
-            space->select.sel_info.hslab->span_lst=H5S_hyper_copy_span(new_spans);
+            space->select.sel_info.hslab->span_lst = H5S__hyper_copy_span(new_spans);
     } /* end if */
     else {
         H5S_hyper_span_info_t *merged_spans;
 
         /* Get the merged spans */
-        merged_spans=H5S_hyper_merge_spans_helper(space->select.sel_info.hslab->span_lst, new_spans);
+        merged_spans = H5S__hyper_merge_spans_helper(space->select.sel_info.hslab->span_lst, new_spans);
 
         /* Sanity checking since we started with some spans, we should still have some after the merge */
         HDassert(merged_spans);
 
         /* Free the previous spans */
-        H5S_hyper_free_span_info(space->select.sel_info.hslab->span_lst);
+        H5S__hyper_free_span_info(space->select.sel_info.hslab->span_lst);
 
         /* Point to the new merged spans */
-        space->select.sel_info.hslab->span_lst=merged_spans;
+        space->select.sel_info.hslab->span_lst = merged_spans;
     } /* end else */
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-}   /* H5S_hyper_merge_spans() */
+} /* end H5S__hyper_merge_spans() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_spans_nelem
+    H5S__hyper_spans_nelem
  PURPOSE
     Count the number of elements in a span tree
  USAGE
-    hsize_t H5S_hyper_spans_nelem(spans)
+    hsize_t H5S__hyper_spans_nelem(spans)
         const H5S_hyper_span_info_t *spans; IN: Hyperslan span tree to count elements of
  RETURNS
     Number of elements in span tree on success; negative on failure
@@ -5821,43 +5819,41 @@ H5S_hyper_merge_spans (H5S_t *space, H5S_hyper_span_info_t *new_spans, hbool_t c
  REVISION LOG
 --------------------------------------------------------------------------*/
 static hsize_t
-H5S_hyper_spans_nelem (H5S_hyper_span_info_t *spans)
+H5S__hyper_spans_nelem(const H5S_hyper_span_info_t *spans)
 {
-    H5S_hyper_span_t *span;     /* Hyperslab span */
-    hsize_t ret_value = 0;      /* Return value */
+    hsize_t ret_value = 0;          /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Count the number of elements in the span tree */
-    if(spans==NULL)
-        ret_value=0;
-    else {
-        span=spans->head;
-        ret_value=0;
-        while(span!=NULL) {
+    if(spans != NULL) {
+        const H5S_hyper_span_t *span;     /* Hyperslab span */
+
+        span = spans->head;
+        while(span != NULL) {
             /* If there are down spans, multiply the size of this span by the total down span elements */
-            if(span->down!=NULL)
-                ret_value+=span->nelem*H5S_hyper_spans_nelem(span->down);
+            if(span->down != NULL)
+                ret_value += span->nelem * H5S__hyper_spans_nelem(span->down);
             /* If there are no down spans, just count the elements in this span */
             else
-                ret_value+=span->nelem;
+                ret_value += span->nelem;
 
             /* Advance to next span */
-            span=span->next;
+            span = span->next;
         } /* end while */
     } /* end else */
 
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_spans_nelem() */
+} /* end H5S__hyper_spans_nelem() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_make_spans
+    H5S__hyper_make_spans
  PURPOSE
     Create a span tree
  USAGE
-    H5S_hyper_span_t *H5S_hyper_make_spans(rank, start, stride, count, block)
+    H5S_hyper_span_t *H5S__hyper_make_spans(rank, start, stride, count, block)
         unsigned rank;               IN: # of dimensions of the space
         const hsize_t *start;    IN: Starting location of the hyperslabs
         const hsize_t *stride;    IN: Stride from the beginning of one block to
@@ -5877,7 +5873,7 @@ H5S_hyper_spans_nelem (H5S_hyper_span_info_t *spans)
  REVISION LOG
 --------------------------------------------------------------------------*/
 static H5S_hyper_span_info_t *
-H5S_hyper_make_spans(unsigned rank, const hsize_t *start, const hsize_t *stride,
+H5S__hyper_make_spans(unsigned rank, const hsize_t *start, const hsize_t *stride,
     const hsize_t *count, const hsize_t *block)
 {
     H5S_hyper_span_info_t *down = NULL;     /* Pointer to spans in next dimension down */
@@ -5888,7 +5884,7 @@ H5S_hyper_make_spans(unsigned rank, const hsize_t *start, const hsize_t *stride,
     unsigned               u;               /* Counters */
     H5S_hyper_span_info_t *ret_value = NULL;    /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC
 
     /* Check args */
     HDassert(rank > 0);
@@ -5937,23 +5933,17 @@ H5S_hyper_make_spans(unsigned rank, const hsize_t *start, const hsize_t *stride,
                 span->down = down;
                 down->count++;  /* Increment reference count for shared span */
             } /* end if */
-            else {
+            else
                 span->down = NULL;
-            } /* end else */
         } /* end for */
 
         /* Allocate a span info node */
-        if(NULL == (down = H5FL_MALLOC(H5S_hyper_span_info_t)))
+        if(NULL == (down = H5FL_CALLOC(H5S_hyper_span_info_t)))
             HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, NULL, "can't allocate hyperslab span")
 
-        /* Set the reference count */
-        down->count = 0;
-
-        /* Reset the scratch pad space */
-        down->scratch = 0;
-
         /* Keep the pointer to the next dimension down's completed list */
         down->head = head;
+
     } /* end for */
 
     /* Indicate that there is a pointer to this tree */
@@ -5987,63 +5977,61 @@ done:
     } /* end if */
 
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_make_spans() */
+} /* end H5S__hyper_make_spans() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_rebuild_helper
+    H5S__hyper_rebuild_helper
  PURPOSE
     Helper routine to rebuild optimized hyperslab information if possible.
     (It can be recovered with regular selection)
  USAGE
-    herr_t H5S_hyper_rebuild_helper(space)
+    herr_t H5S__hyper_rebuild_helper(space)
         const H5S_hyper_span_t *span;   IN: Portion of span tree to check
         H5S_hyper_dim_t span_slab[];    OUT: Rebuilt section of hyperslab description
         unsigned rank;                  IN: Current dimension to work on
  RETURNS
-    >=0 on success, <0 on failure
+    TRUE/FALSE for hyperslab selection rebuilt
  DESCRIPTION
     Examine the span tree for a hyperslab selection and rebuild
     the start/stride/count/block information for the selection, if possible.
-
  GLOBAL VARIABLES
  COMMENTS, BUGS, ASSUMPTIONS
     To be able to recover the optimized information, the span tree must conform
     to span tree able to be generated from a single H5S_SELECT_SET operation.
-
  EXAMPLES
  REVISION LOG
     KY, 2005/9/22
 --------------------------------------------------------------------------*/
 static hbool_t
-H5S_hyper_rebuild_helper(const H5S_hyper_span_t *span, H5S_hyper_dim_t span_slab_info[],
+H5S__hyper_rebuild_helper(const H5S_hyper_span_t *span, H5S_hyper_dim_t span_slab_info[],
     unsigned rank)
 {
-    hsize_t curr_stride, next_stride;
-    hsize_t curr_block, next_block;
-    hsize_t curr_start;
-    hsize_t curr_low;
-    size_t outcount;
-    unsigned u;
-    H5S_hyper_dim_t      canon_down_span_slab_info[H5S_MAX_RANK];
-    hbool_t ret_value = TRUE;
+    hbool_t ret_value = TRUE;   /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     if(span) {
+        const H5S_hyper_span_t *prev_span = NULL;     /* Previous span in list */
+        H5S_hyper_dim_t canon_down_span_slab_info[H5S_MAX_RANK];
+        hsize_t curr_stride;
+        hsize_t curr_block;
+        hsize_t curr_start;
+        hsize_t curr_low;
+        size_t outcount;        /* Number of spans encountered in this dimension */
+
         /* Initialization */
-        curr_stride     = 1;
-        curr_block      = 0;
-        outcount        = 0;
-        curr_low        = 0;
+        curr_stride = 1;
+        curr_low = 0;
+        outcount = 0;
 
         /* Get "canonical" down span information */
         if(span->down) {
             HDassert(span->down->head);
 
-            /* Go to the next down span and check whether the selection can be rebuilt.*/
-            if(!H5S_hyper_rebuild_helper(span->down->head, span_slab_info, rank - 1))
+            /* Go to the next down span and check whether the selection can be rebuilt */
+            if(!H5S__hyper_rebuild_helper(span->down->head, span_slab_info, rank - 1))
                 HGOTO_DONE(FALSE)
 
             HDmemcpy(canon_down_span_slab_info, span_slab_info, sizeof(H5S_hyper_dim_t) * rank);
@@ -6053,22 +6041,27 @@ H5S_hyper_rebuild_helper(const H5S_hyper_span_t *span, H5S_hyper_dim_t span_slab
         curr_start = span->low;
         curr_block = (span->high - span->low) + 1;
 
-        /* Loop the span */
+        /* Loop the spans */
         while(span) {
             if(outcount > 0) {
-                if(span->down) {
-                    H5S_hyper_dim_t      *curr_down_span_slab_info;
+                hsize_t next_stride;    /* Stride from previous span */
+                hsize_t next_block;     /* Block size of current span */
+
+                /* Check that down spans match current slab info */
+                /* (Can skip check if previous span's down pointer is same as current one) */
+                if(span->down && (NULL == prev_span || prev_span->down != span->down)) {
+                    H5S_hyper_dim_t *curr_down_span_slab_info;
+                    unsigned u;                 /* Local index variable */
 
                     HDassert(span->down->head);
 
                     /* Go to the next down span and check whether the selection can be rebuilt.*/
-                    if(!H5S_hyper_rebuild_helper(span->down->head, span_slab_info, rank - 1))
+                    if(!H5S__hyper_rebuild_helper(span->down->head, span_slab_info, rank - 1))
                         HGOTO_DONE(FALSE)
 
                     /* Compare the slab information of the adjacent spans in the down span tree.
                        We have to compare all the sub-tree slab information with the canon_down_span_slab_info.*/
-
-                    for( u = 0; u < rank - 1; u++) {
+                    for(u = 0; u < rank - 1; u++) {
                        curr_down_span_slab_info = &span_slab_info[u];
 
                        if(curr_down_span_slab_info->count > 0 && canon_down_span_slab_info[u].count > 0) {
@@ -6078,32 +6071,32 @@ H5S_hyper_rebuild_helper(const H5S_hyper_span_t *span, H5S_hyper_dim_t span_slab
                               || curr_down_span_slab_info->count != canon_down_span_slab_info[u].count)
                           HGOTO_DONE(FALSE)
                        } /* end if */
-                       else if (!((curr_down_span_slab_info->count == 0) && (canon_down_span_slab_info[u].count == 0)))
+                       else if(!((curr_down_span_slab_info->count == 0) && (canon_down_span_slab_info[u].count == 0)))
                           HGOTO_DONE(FALSE)
-                    }
+                    } /* end for */
                 } /* end if */
-            } /* end if */
 
-            /* Obtain values for stride and block */
-            next_stride  = span->low  - curr_low;
-            next_block   = (span->high - span->low) + 1;
+                /* Obtain values for stride and block */
+                next_stride = span->low  - curr_low;
+                next_block = (span->high - span->low) + 1;
 
-            /* Compare stride and block in this span, to compare stride,
-             * three spans are needed. Ignore the first two spans.
-             */
-            if(outcount  > 1  && curr_stride != next_stride)
-                HGOTO_DONE(FALSE)
-            if(outcount != 0  && next_block  != curr_block)
-                HGOTO_DONE(FALSE)
+                /* Compare stride and block in this span, to compare stride,
+                 * three spans are needed. Account for the first two spans.
+                 */
+                if(next_block != curr_block)
+                    HGOTO_DONE(FALSE)
+                if(outcount > 1 && curr_stride != next_stride)
+                    HGOTO_DONE(FALSE)
 
-            /* Keep the isolated stride to be 1 */
-            if(outcount != 0)
+                /* Keep the isolated stride to be 1 */
                 curr_stride = next_stride;
+            } /* end if */
 
             /* Keep current starting point */
-            curr_low    = span->low;
+            curr_low = span->low;
 
             /* Advance to next span */
+            prev_span = span;
             span = span->next;
             outcount++;
         } /* end while */
@@ -6117,47 +6110,42 @@ H5S_hyper_rebuild_helper(const H5S_hyper_span_t *span, H5S_hyper_dim_t span_slab
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5S_hyper_rebuild_helper() */
+} /* end H5S__hyper_rebuild_helper() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_rebuild
+    H5S__hyper_rebuild
  PURPOSE
     Rebuild optimized hyperslab information if possible.
     (It can be recovered with regular selection)
  USAGE
-    herr_t H5S_hyper_rebuild(space)
+    hbool_t H5S__hyper_rebuild(space)
         const H5S_t *space;     IN: Dataspace to check
  RETURNS
-    >=0 on success, <0 on failure
+    TRUE/FALSE for hyperslab selection rebuilt
  DESCRIPTION
     Examine the span tree for a hyperslab selection and rebuild
     the start/stride/count/block information for the selection, if possible.
-
  GLOBAL VARIABLES
  COMMENTS, BUGS, ASSUMPTIONS
     To be able to recover the optimized information, the span tree must conform
     to span tree able to be generated from a single H5S_SELECT_SET operation.
-
  EXAMPLES
  REVISION LOG
-
     This routine is the optimization of the old version. The previous version
     can only detect a singluar selection. This version is general enough to
     detect any regular selection.
     KY, 2005/9/22
 --------------------------------------------------------------------------*/
-static htri_t
-H5S_hyper_rebuild(H5S_t *space)
+static hbool_t
+H5S__hyper_rebuild(H5S_t *space)
 {
     H5S_hyper_dim_t top_span_slab_info[H5O_LAYOUT_NDIMS];
-    H5S_hyper_dim_t *diminfo;
-    H5S_hyper_dim_t *app_diminfo;
     unsigned rank, curr_dim;
-    htri_t ret_value = TRUE;      /* Return value */
+    hbool_t ret_value = TRUE;      /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(space);
@@ -6167,12 +6155,15 @@ H5S_hyper_rebuild(H5S_t *space)
     rank = space->extent.rank;
 
     /* Check whether the slab can be rebuilt. Only regular selection can be rebuilt. If yes, fill in correct values.*/
-    if(!H5S_hyper_rebuild_helper(space->select.sel_info.hslab->span_lst->head, top_span_slab_info, rank)) {
+    if(!H5S__hyper_rebuild_helper(space->select.sel_info.hslab->span_lst->head, top_span_slab_info, rank)) {
         HGOTO_DONE(FALSE)
     } /* end if */
     else {
-        diminfo=space->select.sel_info.hslab->opt_diminfo;
-        app_diminfo=space->select.sel_info.hslab->app_diminfo;
+        H5S_hyper_dim_t *diminfo;
+        H5S_hyper_dim_t *app_diminfo;
+
+        diminfo = space->select.sel_info.hslab->opt_diminfo;
+        app_diminfo = space->select.sel_info.hslab->app_diminfo;
 
         for(curr_dim = 0; curr_dim < rank; curr_dim++) {
 
@@ -6188,16 +6179,16 @@ H5S_hyper_rebuild(H5S_t *space)
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_rebuild() */
+} /* end H5S__hyper_rebuild() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_generate_spans
+    H5S__hyper_generate_spans
  PURPOSE
     Create span tree for a regular hyperslab selection
  USAGE
-    herr_t H5S_hyper_generate_spans(space)
+    herr_t H5S__hyper_generate_spans(space)
         H5S_t *space;           IN/OUT: Pointer to dataspace
  RETURNS
     Non-negative on success, negative on failure
@@ -6210,22 +6201,22 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_generate_spans(H5S_t *space)
+H5S__hyper_generate_spans(H5S_t *space)
 {
-    hsize_t tmp_start[H5O_LAYOUT_NDIMS];   /* Temporary start information */
+    hsize_t tmp_start[H5O_LAYOUT_NDIMS];    /* Temporary start information */
     hsize_t tmp_stride[H5O_LAYOUT_NDIMS];   /* Temporary stride information */
     hsize_t tmp_count[H5O_LAYOUT_NDIMS];    /* Temporary count information */
     hsize_t tmp_block[H5O_LAYOUT_NDIMS];    /* Temporary block information */
-    unsigned u;                             /* Counter */
-    herr_t      ret_value=SUCCEED;       /* Return value */
+    unsigned u;                             /* Local index variable */
+    herr_t ret_value = SUCCEED;             /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC
 
     HDassert(space);
     HDassert(H5S_GET_SELECT_TYPE(space) == H5S_SEL_HYPERSLABS);
 
     /* Get the diminfo */
-    for(u=0; u<space->extent.rank; u++) {
+    for(u = 0; u < space->extent.rank; u++) {
         /* Check for unlimited dimension and return error */
         /* These should be able to be converted to assertions once everything
          * that calls this function checks for unlimited selections first
@@ -6242,17 +6233,17 @@ H5S_hyper_generate_spans(H5S_t *space)
     } /* end for */
 
     /* Build the hyperslab information also */
-    if(H5S_generate_hyperslab (space, H5S_SELECT_SET, tmp_start, tmp_stride, tmp_count, tmp_block)<0)
+    if(H5S__generate_hyperslab(space, H5S_SELECT_SET, tmp_start, tmp_stride, tmp_count, tmp_block) < 0)
         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't generate hyperslabs")
 
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* H5S_hyper_generate_spans() */
+} /* end H5S__hyper_generate_spans() */
 
 #ifndef NEW_HYPERSLAB_API
 
 /*-------------------------------------------------------------------------
- * Function:	H5S_generate_hyperlab
+ * Function:	H5S__generate_hyperlab
  *
  * Purpose:	Generate hyperslab information from H5S_select_hyperslab()
  *
@@ -6266,19 +6257,19 @@ done:
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5S_generate_hyperslab (H5S_t *space, H5S_seloper_t op,
+H5S__generate_hyperslab (H5S_t *space, H5S_seloper_t op,
 		      const hsize_t start[],
 		      const hsize_t stride[],
 		      const hsize_t count[],
 		      const hsize_t block[])
 {
     H5S_hyper_span_info_t *new_spans=NULL;  /* Span tree for new hyperslab */
-    H5S_hyper_span_info_t *a_not_b=NULL;    /* Span tree for hyperslab spans in old span tree and not in new span tree */
-    H5S_hyper_span_info_t *a_and_b=NULL;    /* Span tree for hyperslab spans in both old and new span trees */
-    H5S_hyper_span_info_t *b_not_a=NULL;    /* Span tree for hyperslab spans in new span tree and not in old span tree */
-    herr_t      ret_value=SUCCEED;       /* Return value */
+    H5S_hyper_span_info_t *a_not_b = NULL;      /* Span tree for hyperslab spans in old span tree and not in new span tree */
+    H5S_hyper_span_info_t *a_and_b = NULL;      /* Span tree for hyperslab spans in both old and new span trees */
+    H5S_hyper_span_info_t *b_not_a = NULL;      /* Span tree for hyperslab spans in new span tree and not in old span tree */
+    herr_t ret_value = SUCCEED;         /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC
 
     /* Check args */
     HDassert(space);
@@ -6289,17 +6280,17 @@ H5S_generate_hyperslab (H5S_t *space, H5S_seloper_t op,
     HDassert(block);
 
     /* Generate span tree for new hyperslab information */
-    if((new_spans=H5S_hyper_make_spans(space->extent.rank,start,stride,count,block))==NULL)
+    if(NULL == (new_spans = H5S__hyper_make_spans(space->extent.rank, start, stride, count, block)))
         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't create hyperslab information")
 
     /* Generate list of blocks to add/remove based on selection operation */
     if(op==H5S_SELECT_SET) {
         /* Add new spans to current selection */
-        if(H5S_hyper_merge_spans(space,new_spans,TRUE)<0)
+        if(H5S__hyper_merge_spans(space,new_spans,TRUE)<0)
             HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't insert hyperslabs")
 
         /* Set the number of elements in current selection */
-        space->select.num_elem=H5S_hyper_spans_nelem(new_spans);
+        space->select.num_elem = H5S__hyper_spans_nelem(new_spans);
 
         /* Indicate that the new_spans are owned */
         new_spans=NULL;
@@ -6308,18 +6299,18 @@ H5S_generate_hyperslab (H5S_t *space, H5S_seloper_t op,
         hbool_t updated_spans = FALSE;  /* Whether the spans in the selection were modified */
 
         /* Generate lists of spans which overlap and don't overlap */
-        if(H5S_hyper_clip_spans(space->select.sel_info.hslab->span_lst,new_spans,&a_not_b,&a_and_b,&b_not_a)<0)
+        if(H5S__hyper_clip_spans(space->select.sel_info.hslab->span_lst,new_spans,&a_not_b,&a_and_b,&b_not_a)<0)
             HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCLIP, FAIL, "can't clip hyperslab information")
 
         switch(op) {
             case H5S_SELECT_OR:
                 /* Add any new spans from b_not_a to current selection */
                 if(b_not_a!=NULL) {
-                    if(H5S_hyper_merge_spans(space,b_not_a,FALSE)<0)
+                    if(H5S__hyper_merge_spans(space,b_not_a,FALSE)<0)
                         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't insert hyperslabs")
 
                     /* Update the number of elements in current selection */
-                    space->select.num_elem+=H5S_hyper_spans_nelem(b_not_a);
+                    space->select.num_elem += H5S__hyper_spans_nelem(b_not_a);
 
                     /* Indicate that the spans were updated */
                     updated_spans = TRUE;
@@ -6328,7 +6319,7 @@ H5S_generate_hyperslab (H5S_t *space, H5S_seloper_t op,
 
             case H5S_SELECT_AND:
                 /* Free the current selection */
-                if(H5S_hyper_free_span_info(space->select.sel_info.hslab->span_lst)<0)
+                if(H5S__hyper_free_span_info(space->select.sel_info.hslab->span_lst)<0)
                     HGOTO_ERROR(H5E_INTERNAL, H5E_CANTFREE, FAIL, "failed to release hyperslab spans")
                 space->select.sel_info.hslab->span_lst=NULL;
 
@@ -6337,11 +6328,11 @@ H5S_generate_hyperslab (H5S_t *space, H5S_seloper_t op,
 
                 /* Check if there are any overlapped selections */
                 if(a_and_b!=NULL) {
-                    if(H5S_hyper_merge_spans(space,a_and_b,TRUE)<0)
+                    if(H5S__hyper_merge_spans(space,a_and_b,TRUE)<0)
                         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't insert hyperslabs")
 
                     /* Update the number of elements in current selection */
-                    space->select.num_elem=H5S_hyper_spans_nelem(a_and_b);
+                    space->select.num_elem = H5S__hyper_spans_nelem(a_and_b);
 
                     /* Indicate that the a_and_b spans are owned */
                     a_and_b=NULL;
@@ -6353,7 +6344,7 @@ H5S_generate_hyperslab (H5S_t *space, H5S_seloper_t op,
 
             case H5S_SELECT_XOR:
                 /* Free the current selection */
-                if(H5S_hyper_free_span_info(space->select.sel_info.hslab->span_lst)<0)
+                if(H5S__hyper_free_span_info(space->select.sel_info.hslab->span_lst)<0)
                     HGOTO_ERROR(H5E_INTERNAL, H5E_CANTFREE, FAIL, "failed to release hyperslab spans")
                 space->select.sel_info.hslab->span_lst=NULL;
 
@@ -6362,21 +6353,21 @@ H5S_generate_hyperslab (H5S_t *space, H5S_seloper_t op,
 
                 /* Check if there are any non-overlapped selections */
                 if(a_not_b!=NULL) {
-                    if(H5S_hyper_merge_spans(space,a_not_b,FALSE)<0)
+                    if(H5S__hyper_merge_spans(space,a_not_b,FALSE)<0)
                         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't insert hyperslabs")
 
                     /* Update the number of elements in current selection */
-                    space->select.num_elem=H5S_hyper_spans_nelem(a_not_b);
+                    space->select.num_elem = H5S__hyper_spans_nelem(a_not_b);
 
                     /* Indicate that the spans were updated */
                     updated_spans = TRUE;
                 } /* end if */
                 if(b_not_a!=NULL) {
-                    if(H5S_hyper_merge_spans(space,b_not_a,FALSE)<0)
+                    if(H5S__hyper_merge_spans(space,b_not_a,FALSE)<0)
                         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't insert hyperslabs")
 
                     /* Update the number of elements in current selection */
-                    space->select.num_elem+=H5S_hyper_spans_nelem(b_not_a);
+                    space->select.num_elem += H5S__hyper_spans_nelem(b_not_a);
 
                     /* Indicate that the spans were updated */
                     updated_spans = TRUE;
@@ -6385,7 +6376,7 @@ H5S_generate_hyperslab (H5S_t *space, H5S_seloper_t op,
 
             case H5S_SELECT_NOTB:
                 /* Free the current selection */
-                if(H5S_hyper_free_span_info(space->select.sel_info.hslab->span_lst)<0)
+                if(H5S__hyper_free_span_info(space->select.sel_info.hslab->span_lst)<0)
                     HGOTO_ERROR(H5E_INTERNAL, H5E_CANTFREE, FAIL, "failed to release hyperslab spans")
                 space->select.sel_info.hslab->span_lst=NULL;
 
@@ -6394,11 +6385,11 @@ H5S_generate_hyperslab (H5S_t *space, H5S_seloper_t op,
 
                 /* Check if there are any non-overlapped selections */
                 if(a_not_b!=NULL) {
-                    if(H5S_hyper_merge_spans(space,a_not_b,TRUE)<0)
+                    if(H5S__hyper_merge_spans(space,a_not_b,TRUE)<0)
                         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't insert hyperslabs")
 
                     /* Update the number of elements in current selection */
-                    space->select.num_elem=H5S_hyper_spans_nelem(a_not_b);
+                    space->select.num_elem = H5S__hyper_spans_nelem(a_not_b);
 
                     /* Indicate that the a_not_b are owned */
                     a_not_b=NULL;
@@ -6410,7 +6401,7 @@ H5S_generate_hyperslab (H5S_t *space, H5S_seloper_t op,
 
             case H5S_SELECT_NOTA:
                 /* Free the current selection */
-                if(H5S_hyper_free_span_info(space->select.sel_info.hslab->span_lst)<0)
+                if(H5S__hyper_free_span_info(space->select.sel_info.hslab->span_lst)<0)
                     HGOTO_ERROR(H5E_INTERNAL, H5E_CANTFREE, FAIL, "failed to release hyperslab spans")
                 space->select.sel_info.hslab->span_lst=NULL;
 
@@ -6419,11 +6410,11 @@ H5S_generate_hyperslab (H5S_t *space, H5S_seloper_t op,
 
                 /* Check if there are any non-overlapped selections */
                 if(b_not_a!=NULL) {
-                    if(H5S_hyper_merge_spans(space,b_not_a,TRUE)<0)
+                    if(H5S__hyper_merge_spans(space,b_not_a,TRUE)<0)
                         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't insert hyperslabs")
 
                     /* Update the number of elements in current selection */
-                    space->select.num_elem=H5S_hyper_spans_nelem(b_not_a);
+                    space->select.num_elem = H5S__hyper_spans_nelem(b_not_a);
 
                     /* Indicate that the b_not_a are owned */
                     b_not_a=NULL;
@@ -6471,8 +6462,7 @@ H5S_generate_hyperslab (H5S_t *space, H5S_seloper_t op,
                 /* Attempt to rebuild "optimized" start/stride/count/block information.
                  * from resulting hyperslab span tree
                  */
-                if(H5S_hyper_rebuild(space) < 0)
-                    HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCOUNT, FAIL, "can't rebuild hyperslab info")
+                H5S__hyper_rebuild(space);
             } /* end if */
         } /* end else */
     } /* end else */
@@ -6480,20 +6470,20 @@ H5S_generate_hyperslab (H5S_t *space, H5S_seloper_t op,
 done:
     /* Free resources */
     if(a_not_b)
-        if(H5S_hyper_free_span_info(a_not_b) < 0)
+        if(H5S__hyper_free_span_info(a_not_b) < 0)
             HDONE_ERROR(H5E_INTERNAL, H5E_CANTFREE, FAIL, "failed to release temporary hyperslab spans")
     if(a_and_b)
-        if(H5S_hyper_free_span_info(a_and_b) < 0)
+        if(H5S__hyper_free_span_info(a_and_b) < 0)
             HDONE_ERROR(H5E_INTERNAL, H5E_CANTFREE, FAIL, "failed to release temporary hyperslab spans")
     if(b_not_a)
-        if(H5S_hyper_free_span_info(b_not_a) < 0)
+        if(H5S__hyper_free_span_info(b_not_a) < 0)
             HDONE_ERROR(H5E_INTERNAL, H5E_CANTFREE, FAIL, "failed to release temporary hyperslab spans")
     if(new_spans)
-        if(H5S_hyper_free_span_info(new_spans) < 0)
+        if(H5S__hyper_free_span_info(new_spans) < 0)
             HDONE_ERROR(H5E_INTERNAL, H5E_CANTFREE, FAIL, "failed to release temporary hyperslab spans")
 
     FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5S_generate_hyperslab() */
+} /* end H5S__generate_hyperslab() */
 
 
 /*-------------------------------------------------------------------------
@@ -6509,11 +6499,8 @@ done:
  *-------------------------------------------------------------------------
  */
 herr_t
-H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
-		      const hsize_t start[],
-		      const hsize_t *stride,
-		      const hsize_t count[],
-		      const hsize_t *block)
+H5S_select_hyperslab(H5S_t *space, H5S_seloper_t op, const hsize_t start[],
+    const hsize_t *stride, const hsize_t count[], const hsize_t *block)
 {
     hsize_t int_stride[H5O_LAYOUT_NDIMS];   /* Internal storage for stride information */
     hsize_t int_count[H5O_LAYOUT_NDIMS];    /* Internal storage for count information */
@@ -6521,9 +6508,9 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
     const hsize_t *opt_stride;      /* Optimized stride information */
     const hsize_t *opt_count;       /* Optimized count information */
     const hsize_t *opt_block;       /* Optimized block information */
-    unsigned u;                     /* Counters */
     int unlim_dim = -1;             /* Unlimited dimension in selection, of -1 if none */
-    herr_t      ret_value=SUCCEED;       /* Return value */
+    unsigned u;                     /* Local index variable */
+    herr_t ret_value = SUCCEED;     /* Return value */
 
     FUNC_ENTER_NOAPI(FAIL)
 
@@ -6534,31 +6521,19 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
     HDassert(op > H5S_SELECT_NOOP && op < H5S_SELECT_INVALID);
 
     /* Point to the correct stride values */
-    if(stride==NULL)
-        stride = _ones;
+    if(stride == NULL)
+        stride = H5S_hyper_ones_g;
 
     /* Point to the correct block values */
-    if(block==NULL)
-        block = _ones;
-
-    /* Check for unlimited dimension */
-    for(u = 0; u<space->extent.rank; u++)
-        if((count[u] == H5S_UNLIMITED) || (block[u] == H5S_UNLIMITED)) {
-            if(unlim_dim >= 0)
-                HGOTO_ERROR(H5E_DATASPACE, H5E_UNSUPPORTED, FAIL, "cannot have more than one unlimited dimension in selection")
-            else {
-                if(count[u] == block[u] /* == H5S_UNLIMITED */)
-                    HGOTO_ERROR(H5E_DATASPACE, H5E_UNSUPPORTED, FAIL, "count and block cannot both be unlimited")
-                unlim_dim = (int)u;
-            } /* end else */
-        } /* end if */
+    if(block == NULL)
+        block = H5S_hyper_ones_g;
 
     /*
      * Check new selection.
      */
-    for(u=0; u<space->extent.rank; u++) {
+    for(u = 0; u < space->extent.rank; u++) {
         /* Check for overlapping hyperslab blocks in new selection. */
-        if(count[u]>1 && stride[u]<block[u])
+        if(count[u] > 1 && stride[u] < block[u])
             HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "hyperslab blocks overlap")
 
         /* Detect zero-sized hyperslabs in new selection */
@@ -6568,8 +6543,8 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
                 case H5S_SELECT_AND:   /* Binary "and" operation for hyperslabs */
                 case H5S_SELECT_NOTA:  /* Binary "B not A" operation for hyperslabs */
                     /* Convert to "none" selection */
-                    if(H5S_select_none(space)<0)
-                        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTDELETE, FAIL, "can't convert selection")
+                    if(H5S_select_none(space) < 0)
+                        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTSELECT, FAIL, "can't convert selection")
                     HGOTO_DONE(SUCCEED);
 
                 case H5S_SELECT_OR:    /* Binary "or" operation for hyperslabs */
@@ -6585,13 +6560,24 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
                     HGOTO_ERROR(H5E_ARGS, H5E_UNSUPPORTED, FAIL, "invalid selection operation")
             } /* end switch */
         } /* end if */
+
+        /* Check for unlimited dimension */
+        if((count[u] == H5S_UNLIMITED) || (block[u] == H5S_UNLIMITED)) {
+            if(unlim_dim >= 0)
+                HGOTO_ERROR(H5E_DATASPACE, H5E_UNSUPPORTED, FAIL, "cannot have more than one unlimited dimension in selection")
+            else {
+                if(count[u] == block[u] /* == H5S_UNLIMITED */)
+                    HGOTO_ERROR(H5E_DATASPACE, H5E_UNSUPPORTED, FAIL, "count and block cannot both be unlimited")
+                unlim_dim = (int)u;
+            } /* end else */
+        } /* end if */
     } /* end for */
 
     /* Optimize hyperslab parameters to merge contiguous blocks, etc. */
-    if(stride == _ones && block == _ones) {
+    if(stride == H5S_hyper_ones_g && block == H5S_hyper_ones_g) {
         /* Point to existing arrays */
-        opt_stride = _ones;
-        opt_count = _ones;
+        opt_stride = H5S_hyper_ones_g;
+        opt_count = H5S_hyper_ones_g;
         opt_block = count;
     } /* end if */
     else {
@@ -6599,26 +6585,26 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
         opt_stride = int_stride;
         opt_count = int_count;
         opt_block = int_block;
-        for(u=0; u<space->extent.rank; u++) {
+        for(u = 0; u < space->extent.rank; u++) {
             /* contiguous hyperslabs have the block size equal to the stride */
             if((stride[u] == block[u]) && (count[u] != H5S_UNLIMITED)) {
-                int_count[u]=1;
-                int_stride[u]=1;
-                if(block[u]==1)
-                    int_block[u]=count[u];
+                int_count[u] = 1;
+                int_stride[u] = 1;
+                if(block[u] == 1)
+                    int_block[u] = count[u];
                 else
-                    int_block[u]=block[u]*count[u];
+                    int_block[u] = block[u] * count[u];
             } /* end if */
             else {
-                if(count[u]==1)
-                    int_stride[u]=1;
+                if(count[u] == 1)
+                    int_stride[u] = 1;
                 else {
-                    HDassert((stride[u] > block[u]) || ((stride[u] == block[u])
-                            && (count[u] == H5S_UNLIMITED)));
-                    int_stride[u]=stride[u];
+                    HDassert((stride[u] > block[u]) ||
+                            ((stride[u] == block[u]) && (count[u] == H5S_UNLIMITED)));
+                    int_stride[u] = stride[u];
                 } /* end else */
-                int_count[u]=count[u];
-                int_block[u]=block[u];
+                int_count[u] = count[u];
+                int_block[u] = block[u];
             } /* end else */
         } /* end for */
     } /* end else */
@@ -6626,8 +6612,7 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
     /* Check for operating on unlimited selection */
     if((H5S_GET_SELECT_TYPE(space) == H5S_SEL_HYPERSLABS)
             && (space->select.sel_info.hslab->unlim_dim >= 0)
-            && (op != H5S_SELECT_SET))
-            {
+            && (op != H5S_SELECT_SET)) {
         /* Check for invalid operation */
         if(unlim_dim >= 0)
             HGOTO_ERROR(H5E_DATASPACE, H5E_UNSUPPORTED, FAIL, "cannot modify unlimited selection with another unlimited selection")
@@ -6638,15 +6623,13 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
         /* Clip unlimited selection to include new selection */
         if(H5S_hyper_clip_unlim(space,
                 start[space->select.sel_info.hslab->unlim_dim]
-                + ((opt_count[space->select.sel_info.hslab->unlim_dim]
-                - (hsize_t)1)
-                * opt_stride[space->select.sel_info.hslab->unlim_dim])
-                + opt_block[space->select.sel_info.hslab->unlim_dim]) < 0)
+                    + ((opt_count[space->select.sel_info.hslab->unlim_dim] - (hsize_t)1)
+                        * opt_stride[space->select.sel_info.hslab->unlim_dim])
+                    + opt_block[space->select.sel_info.hslab->unlim_dim]) < 0)
             HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCLIP, FAIL, "failed to clip unlimited selection")
 
         /* If an empty space was returned it must be "none" */
-        HDassert((space->select.num_elem > (hsize_t)0)
-                || (space->select.type->type == H5S_SEL_NONE));
+        HDassert((space->select.num_elem > (hsize_t)0) || (space->select.type->type == H5S_SEL_NONE));
     } /* end if */
 
     /* Fixup operation for non-hyperslab selections */
@@ -6660,7 +6643,7 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
                 case H5S_SELECT_OR:    /* Binary "or" operation for hyperslabs */
                 case H5S_SELECT_XOR:   /* Binary "xor" operation for hyperslabs */
                 case H5S_SELECT_NOTA:  /* Binary "B not A" operation for hyperslabs */
-                    op=H5S_SELECT_SET; /* Maps to "set" operation when applied to "none" selection */
+                    op = H5S_SELECT_SET; /* Maps to "set" operation when applied to "none" selection */
                     break;
 
                 case H5S_SELECT_AND:   /* Binary "and" operation for hyperslabs */
@@ -6686,7 +6669,7 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
                     HGOTO_DONE(SUCCEED);        /* Selection stays "all" */
 
                 case H5S_SELECT_AND:   /* Binary "and" operation for hyperslabs */
-                    op=H5S_SELECT_SET; /* Maps to "set" operation when applied to "none" selection */
+                    op = H5S_SELECT_SET; /* Maps to "set" operation when applied to "none" selection */
                     break;
 
                 case H5S_SELECT_XOR:   /* Binary "xor" operation for hyperslabs */
@@ -6694,29 +6677,26 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
                     /* Convert current "all" selection to "real" hyperslab selection */
                     /* Then allow operation to proceed */
                     {
-                        hsize_t tmp_start[H5O_LAYOUT_NDIMS];   /* Temporary start information */
-                        hsize_t tmp_stride[H5O_LAYOUT_NDIMS];   /* Temporary stride information */
-                        hsize_t tmp_count[H5O_LAYOUT_NDIMS];    /* Temporary count information */
-                        hsize_t tmp_block[H5O_LAYOUT_NDIMS];    /* Temporary block information */
+                        const hsize_t *tmp_start;       /* Temporary start information */
+                        const hsize_t *tmp_stride;      /* Temporary stride information */
+                        const hsize_t *tmp_count;       /* Temporary count information */
+                        const hsize_t *tmp_block;       /* Temporary block information */
 
-                        /* Fill in temporary information for the dimensions */
-                        for(u=0; u<space->extent.rank; u++) {
-                            tmp_start[u]=0;
-                            tmp_stride[u]=1;
-                            tmp_count[u]=1;
-                            tmp_block[u]=space->extent.size[u];
-                        } /* end for */
+                        /* Set up temporary information for the dimensions */
+                        tmp_start = H5S_hyper_zeros_g;
+                        tmp_stride = tmp_count = H5S_hyper_ones_g;
+                        tmp_block = space->extent.size;
 
                         /* Convert to hyperslab selection */
-                        if(H5S_select_hyperslab(space,H5S_SELECT_SET,tmp_start,tmp_stride,tmp_count,tmp_block)<0)
+                        if(H5S_select_hyperslab(space, H5S_SELECT_SET, tmp_start, tmp_stride, tmp_count, tmp_block) < 0)
                             HGOTO_ERROR(H5E_DATASPACE, H5E_CANTDELETE, FAIL, "can't convert selection")
                     } /* end case */
                     break;
 
                 case H5S_SELECT_NOTA:  /* Binary "B not A" operation for hyperslabs */
                     /* Convert to "none" selection */
-                    if(H5S_select_none(space)<0)
-                        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTDELETE, FAIL, "can't convert selection")
+                    if(H5S_select_none(space) < 0)
+                        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTSELECT, FAIL, "can't convert selection")
                     HGOTO_DONE(SUCCEED);
 
                 case H5S_SELECT_NOOP:
@@ -6733,7 +6713,7 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
             break;
 
         case H5S_SEL_POINTS: /* Can't combine hyperslab operations and point selections currently */
-            if(op==H5S_SELECT_SET)      /* Allow only "set" operation to proceed */
+            if(op == H5S_SELECT_SET)      /* Allow only "set" operation to proceed */
                 break;
             /* Else fall through to error */
 
@@ -6789,6 +6769,9 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
             if(space->select.num_elem != (hsize_t)0)
                 space->select.num_elem = H5S_UNLIMITED;
         } /* end if */
+
+        /* Set selection type */
+        space->select.type = H5S_sel_hyper;
     } /* end if */
     else if(op >= H5S_SELECT_OR && op <= H5S_SELECT_NOTA) {
         /* Sanity check */
@@ -6808,19 +6791,19 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
                 HGOTO_ERROR(H5E_DATASPACE, H5E_UNSUPPORTED, FAIL, "unsupported operation with unlimited selection")
 
             /* Get bounds of existing selection */
-            if(H5S_hyper_bounds(space, bounds_start, bounds_end) < 0)
+            if(H5S__hyper_bounds(space, bounds_start, bounds_end) < 0)
                 HGOTO_ERROR(H5E_DATASPACE, H5E_CANTGET, FAIL, "can't get selection bounds")
 
             /* Patch count and block to remove unlimited and include the
              * existing selection */
             H5S__hyper_get_clip_diminfo(start[unlim_dim], opt_stride[unlim_dim], &tmp_count, &tmp_block, bounds_end[unlim_dim] + (hsize_t)1);
-            HDassert((tmp_count == 1) || (opt_count != _ones));
-            HDassert((tmp_block == 1) || (opt_block != _ones));
-            if(opt_count != _ones) {
+            HDassert((tmp_count == 1) || (opt_count != H5S_hyper_ones_g));
+            HDassert((tmp_block == 1) || (opt_block != H5S_hyper_ones_g));
+            if(opt_count != H5S_hyper_ones_g) {
                 HDassert(opt_count == int_count);
                 int_count[unlim_dim] = tmp_count;
             } /* end if */
-            if(opt_block != _ones) {
+            if(opt_block != H5S_hyper_ones_g) {
                 HDassert(opt_block == int_block);
                 int_block[unlim_dim] = tmp_block;
             } /* end if */
@@ -6828,25 +6811,26 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
 
         /* Check if there's no hyperslab span information currently */
         if(NULL == space->select.sel_info.hslab->span_lst)
-            if(H5S_hyper_generate_spans(space) < 0)
+            if(H5S__hyper_generate_spans(space) < 0)
                 HGOTO_ERROR(H5E_DATASPACE, H5E_UNINITIALIZED, FAIL, "dataspace does not have span tree")
 
         /* Indicate that the regular dimensions are no longer valid */
         space->select.sel_info.hslab->diminfo_valid = FALSE;
 
+        /* Set selection type */
+        /* (Could be overridden by resetting selection to 'none', below) */
+        space->select.type = H5S_sel_hyper;
+
         /* Add in the new hyperslab information */
-        if(H5S_generate_hyperslab(space, op, start, opt_stride, opt_count, opt_block) < 0)
+        if(H5S__generate_hyperslab(space, op, start, opt_stride, opt_count, opt_block) < 0)
             HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't generate hyperslabs")
     } /* end if */
     else
         HGOTO_ERROR(H5E_ARGS, H5E_UNSUPPORTED, FAIL, "invalid selection operation")
 
-    /* Set selection type */
-    space->select.type = H5S_sel_hyper;
-
 done:
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* end H5S_select_hyperslab() */
+} /* end H5S_select_hyperslab() */
 
 
 /*--------------------------------------------------------------------------
@@ -6877,10 +6861,9 @@ done:
 --------------------------------------------------------------------------*/
 herr_t
 H5Sselect_hyperslab(hid_t space_id, H5S_seloper_t op, const hsize_t start[],
-         const hsize_t stride[], const hsize_t count[], const hsize_t block[])
+    const hsize_t stride[], const hsize_t count[], const hsize_t block[])
 {
     H5S_t *space;               /* Dataspace to modify selection of */
-    unsigned u;                 /* Local index variable */
     herr_t ret_value = SUCCEED; /* Return value */
 
     FUNC_ENTER_API(FAIL)
@@ -6888,7 +6871,7 @@ H5Sselect_hyperslab(hid_t space_id, H5S_seloper_t op, const hsize_t start[],
 
     /* Check args */
     if(NULL == (space = (H5S_t *)H5I_object_verify(space_id, H5I_DATASPACE)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
     if(H5S_SCALAR == H5S_GET_EXTENT_TYPE(space))
         HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "hyperslab doesn't support H5S_SCALAR space")
     if(H5S_NULL == H5S_GET_EXTENT_TYPE(space))
@@ -6897,15 +6880,16 @@ H5Sselect_hyperslab(hid_t space_id, H5S_seloper_t op, const hsize_t start[],
         HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "hyperslab not specified")
     if(!(op > H5S_SELECT_NOOP && op < H5S_SELECT_INVALID))
         HGOTO_ERROR(H5E_ARGS, H5E_UNSUPPORTED, FAIL, "invalid selection operation")
-    if(stride!=NULL) {
+    if(stride != NULL) {
+        unsigned u;             /* Local index variable */
+
         /* Check for 0-sized strides */
-        for(u=0; u<space->extent.rank; u++) {
-            if(stride[u]==0)
+        for(u = 0; u < space->extent.rank; u++)
+            if(stride[u] == 0)
                 HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid stride==0 value")
-        } /* end for */
     } /* end if */
 
-    if (H5S_select_hyperslab(space, op, start, stride, count, block)<0)
+    if(H5S_select_hyperslab(space, op, start, stride, count, block) < 0)
         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINIT, FAIL, "unable to set hyperslab selection")
 
 done:
@@ -6947,11 +6931,11 @@ H5S_operate_hyperslab (H5S_t *result, H5S_hyper_span_info_t *spans1, H5S_seloper
     /* Just copy the selection from spans2 if we are setting the selection */
     /* ('space1' to 'result' aliasing happens at the next layer up) */
     if(op==H5S_SELECT_SET) {
-        if(H5S_hyper_merge_spans(result,spans2,can_own_span2)<0)
+        if(H5S__hyper_merge_spans(result,spans2,can_own_span2)<0)
             HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't insert hyperslabs")
 
         /* Update the number of elements in current selection */
-        result->select.num_elem=H5S_hyper_spans_nelem(spans2);
+        result->select.num_elem = H5S__hyper_spans_nelem(spans2);
 
         /* Indicate that we took ownership of span2, if allowed */
         if(can_own_span2)
@@ -6963,7 +6947,7 @@ H5S_operate_hyperslab (H5S_t *result, H5S_hyper_span_info_t *spans1, H5S_seloper
         HDassert(spans1);
 
         /* Generate lists of spans which overlap and don't overlap */
-        if(H5S_hyper_clip_spans(spans1,spans2,&a_not_b,&a_and_b,&b_not_a)<0)
+        if(H5S__hyper_clip_spans(spans1,spans2,&a_not_b,&a_and_b,&b_not_a)<0)
             HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCLIP, FAIL, "can't clip hyperslab information")
 
         /* Switch on the operation */
@@ -6971,20 +6955,20 @@ H5S_operate_hyperslab (H5S_t *result, H5S_hyper_span_info_t *spans1, H5S_seloper
             case H5S_SELECT_OR:
                 /* Copy spans from spans1 to current selection */
                 if(spans1!=NULL) {
-                    if(H5S_hyper_merge_spans(result,spans1,FALSE)<0)
+                    if(H5S__hyper_merge_spans(result,spans1,FALSE)<0)
                         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't insert hyperslabs")
 
                     /* Update the number of elements in current selection */
-                    result->select.num_elem=H5S_hyper_spans_nelem(spans1);
+                    result->select.num_elem = H5S__hyper_spans_nelem(spans1);
                 } /* end if */
 
                 /* Add any new spans from spans2 to current selection */
                 if(b_not_a!=NULL) {
-                    if(H5S_hyper_merge_spans(result,b_not_a,FALSE)<0)
+                    if(H5S__hyper_merge_spans(result,b_not_a,FALSE)<0)
                         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't insert hyperslabs")
 
                     /* Update the number of elements in current selection */
-                    result->select.num_elem+=H5S_hyper_spans_nelem(b_not_a);
+                    result->select.num_elem += H5S__hyper_spans_nelem(b_not_a);
 
                     /* Indicate that the spans were updated */
                     updated_spans = TRUE;
@@ -6994,11 +6978,11 @@ H5S_operate_hyperslab (H5S_t *result, H5S_hyper_span_info_t *spans1, H5S_seloper
             case H5S_SELECT_AND:
                 /* Check if there are any overlapped selections */
                 if(a_and_b!=NULL) {
-                    if(H5S_hyper_merge_spans(result,a_and_b,TRUE)<0)
+                    if(H5S__hyper_merge_spans(result,a_and_b,TRUE)<0)
                         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't insert hyperslabs")
 
                     /* Update the number of elements in current selection */
-                    result->select.num_elem=H5S_hyper_spans_nelem(a_and_b);
+                    result->select.num_elem = H5S__hyper_spans_nelem(a_and_b);
 
                     /* Indicate that the result owns the a_and_b spans */
                     a_and_b=NULL;
@@ -7011,21 +6995,21 @@ H5S_operate_hyperslab (H5S_t *result, H5S_hyper_span_info_t *spans1, H5S_seloper
             case H5S_SELECT_XOR:
                 /* Check if there are any non-overlapped selections */
                 if(a_not_b!=NULL) {
-                    if(H5S_hyper_merge_spans(result,a_not_b,FALSE)<0)
+                    if(H5S__hyper_merge_spans(result,a_not_b,FALSE)<0)
                         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't insert hyperslabs")
 
                     /* Update the number of elements in current selection */
-                    result->select.num_elem=H5S_hyper_spans_nelem(a_not_b);
+                    result->select.num_elem = H5S__hyper_spans_nelem(a_not_b);
 
                     /* Indicate that the spans were updated */
                     updated_spans = TRUE;
                 } /* end if */
                 if(b_not_a!=NULL) {
-                    if(H5S_hyper_merge_spans(result,b_not_a,FALSE)<0)
+                    if(H5S__hyper_merge_spans(result,b_not_a,FALSE)<0)
                         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't insert hyperslabs")
 
                     /* Update the number of elements in current selection */
-                    result->select.num_elem+=H5S_hyper_spans_nelem(b_not_a);
+                    result->select.num_elem += H5S__hyper_spans_nelem(b_not_a);
 
                     /* Indicate that the spans were updated */
                     updated_spans = TRUE;
@@ -7035,11 +7019,11 @@ H5S_operate_hyperslab (H5S_t *result, H5S_hyper_span_info_t *spans1, H5S_seloper
             case H5S_SELECT_NOTB:
                 /* Check if there are any non-overlapped selections */
                 if(a_not_b!=NULL) {
-                    if(H5S_hyper_merge_spans(result,a_not_b,TRUE)<0)
+                    if(H5S__hyper_merge_spans(result,a_not_b,TRUE)<0)
                         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't insert hyperslabs")
 
                     /* Update the number of elements in current selection */
-                    result->select.num_elem=H5S_hyper_spans_nelem(a_not_b);
+                    result->select.num_elem = H5S__hyper_spans_nelem(a_not_b);
 
                     /* Indicate that the result owns the a_not_b spans */
                     a_not_b=NULL;
@@ -7052,11 +7036,11 @@ H5S_operate_hyperslab (H5S_t *result, H5S_hyper_span_info_t *spans1, H5S_seloper
             case H5S_SELECT_NOTA:
                 /* Check if there are any non-overlapped selections */
                 if(b_not_a!=NULL) {
-                    if(H5S_hyper_merge_spans(result,b_not_a,TRUE)<0)
+                    if(H5S__hyper_merge_spans(result,b_not_a,TRUE)<0)
                         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't insert hyperslabs")
 
                     /* Update the number of elements in current selection */
-                    result->select.num_elem=H5S_hyper_spans_nelem(b_not_a);
+                    result->select.num_elem = H5S__hyper_spans_nelem(b_not_a);
 
                     /* Indicate that the result owns the b_not_a spans */
                     b_not_a=NULL;
@@ -7072,11 +7056,11 @@ H5S_operate_hyperslab (H5S_t *result, H5S_hyper_span_info_t *spans1, H5S_seloper
 
         /* Free the hyperslab trees generated from the clipping algorithm */
         if(a_not_b)
-            H5S_hyper_free_span_info(a_not_b);
+            H5S__hyper_free_span_info(a_not_b);
         if(a_and_b)
-            H5S_hyper_free_span_info(a_and_b);
+            H5S__hyper_free_span_info(a_and_b);
         if(b_not_a)
-            H5S_hyper_free_span_info(b_not_a);
+            H5S__hyper_free_span_info(b_not_a);
 
         /* Check if the resulting hyperslab span tree is empty */
         if(result->select.sel_info.hslab->span_lst==NULL) {
@@ -7107,8 +7091,7 @@ H5S_operate_hyperslab (H5S_t *result, H5S_hyper_span_info_t *spans1, H5S_seloper
                 /* Attempt to rebuild "optimized" start/stride/count/block information.
                  * from resulting hyperslab span tree
                  */
-                if(H5S_hyper_rebuild(result) < 0)
-                    HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCOUNT, FAIL, "can't rebuild hyperslab info")
+                H5S__hyper_rebuild(result);
             } /* end if */
         } /* end else */
     } /* end else */
@@ -7133,11 +7116,8 @@ done:
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5S_generate_hyperslab (H5S_t *space, H5S_seloper_t op,
-		      const hsize_t start[],
-		      const hsize_t stride[],
-		      const hsize_t count[],
-		      const hsize_t block[])
+H5S__generate_hyperslab(H5S_t *space, H5S_seloper_t op, const hsize_t start[],
+    const hsize_t stride[], const hsize_t count[], const hsize_t block[])
 {
     H5S_hyper_span_info_t *new_spans=NULL;   /* Span tree for new hyperslab */
     H5S_hyper_span_info_t *tmp_spans=NULL;   /* Temporary copy of selection */
@@ -7155,7 +7135,7 @@ H5S_generate_hyperslab (H5S_t *space, H5S_seloper_t op,
     HDassert(block);
 
     /* Generate span tree for new hyperslab information */
-    if((new_spans=H5S_hyper_make_spans(space->extent.rank,start,stride,count,block))==NULL)
+    if(NULL == (new_spans = H5S__hyper_make_spans(space->extent.rank, start, stride, count, block)))
         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't create hyperslab information")
 
     /* Copy the original dataspace */
@@ -7184,14 +7164,14 @@ H5S_generate_hyperslab (H5S_t *space, H5S_seloper_t op,
 done:
     /* Free temporary data structures */
     if(tmp_spans!=NULL)
-        if(H5S_hyper_free_span_info(tmp_spans)<0)
+        if(H5S__hyper_free_span_info(tmp_spans)<0)
             HDONE_ERROR(H5E_INTERNAL, H5E_CANTFREE, FAIL, "failed to release temporary hyperslab spans")
     if(new_spans!=NULL && span2_owned==FALSE)
-        if(H5S_hyper_free_span_info(new_spans)<0)
+        if(H5S__hyper_free_span_info(new_spans)<0)
             HDONE_ERROR(H5E_INTERNAL, H5E_CANTFREE, FAIL, "failed to release temporary hyperslab spans")
 
     FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5S_generate_hyperslab() */
+} /* end H5S__generate_hyperslab() */
 
 
 /*-------------------------------------------------------------------------
@@ -7235,11 +7215,11 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
 
     /* Point to the correct stride values */
     if(stride==NULL)
-        stride = _ones;
+        stride = H5S_hyper_ones_g;
 
     /* Point to the correct block values */
     if(block==NULL)
-        block = _ones;
+        block = H5S_hyper_ones_g;
 
     /* Check for unlimited dimension */
     for(u = 0; u<space->extent.rank; u++)
@@ -7284,10 +7264,10 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
     } /* end for */
 
     /* Optimize hyperslab parameters to merge contiguous blocks, etc. */
-    if(stride == _ones && block == _ones) {
+    if(stride == H5S_hyper_ones_g && block == H5S_hyper_ones_g) {
         /* Point to existing arrays */
-        opt_stride = _ones;
-        opt_count = _ones;
+        opt_stride = H5S_hyper_ones_g;
+        opt_count = H5S_hyper_ones_g;
         opt_block = count;
     } /* end if */
     else {
@@ -7501,13 +7481,13 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
             /* Patch count and block to remove unlimited and include the
              * existing selection */
             H5S__hyper_get_clip_diminfo(start[unlim_dim], opt_stride[unlim_dim], &tmp_count, &tmp_block, bounds_end[unlim_dim] + (hsize_t)1);
-            HDassert((tmp_count == 1) || (opt_count != _ones));
-            HDassert((tmp_block == 1) || (opt_block != _ones));
-            if(opt_count != _ones) {
+            HDassert((tmp_count == 1) || (opt_count != H5S_hyper_ones_g));
+            HDassert((tmp_block == 1) || (opt_block != H5S_hyper_ones_g));
+            if(opt_count != H5S_hyper_ones_g) {
                 HDassert(opt_count == int_count);
                 int_count[unlim_dim] = tmp_count;
             } /* end if */
-            if(opt_block != _ones) {
+            if(opt_block != H5S_hyper_ones_g) {
                 HDassert(opt_block == int_block);
                 int_block[unlim_dim] = tmp_block;
             } /* end if */
@@ -7515,14 +7495,14 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
 
         /* Check if there's no hyperslab span information currently */
         if(NULL == space->select.sel_info.hslab->span_lst)
-            if(H5S_hyper_generate_spans(space) < 0)
+            if(H5S__hyper_generate_spans(space) < 0)
                 HGOTO_ERROR(H5E_DATASPACE, H5E_UNINITIALIZED, FAIL, "dataspace does not have span tree")
 
         /* Indicate that the regular dimensions are no longer valid */
         space->select.sel_info.hslab->diminfo_valid = FALSE;
 
         /* Add in the new hyperslab information */
-        if(H5S_generate_hyperslab (space, op, start, opt_stride, opt_count, opt_block)<0)
+        if(H5S__generate_hyperslab (space, op, start, opt_stride, opt_count, opt_block)<0)
             HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't generate hyperslabs")
     } /* end if */
     else
@@ -7574,7 +7554,7 @@ H5Sselect_hyperslab(hid_t space_id, H5S_seloper_t op, const hsize_t start[],
 
     /* Check args */
     if (NULL == (space=H5I_object_verify(space_id, H5I_DATASPACE)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
     if (H5S_SCALAR==H5S_GET_EXTENT_TYPE(space))
         HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "hyperslab doesn't support H5S_SCALAR space")
     if (H5S_NULL==H5S_GET_EXTENT_TYPE(space))
@@ -7632,38 +7612,37 @@ done:
 --------------------------------------------------------------------------*/
 hid_t
 H5Scombine_hyperslab(hid_t space_id, H5S_seloper_t op, const hsize_t start[],
-         const hsize_t stride[], const hsize_t count[], const hsize_t block[])
+    const hsize_t stride[], const hsize_t count[], const hsize_t block[])
 {
-    H5S_t	*space = NULL;  /* Dataspace to modify selection of */
-    H5S_t	*new_space = NULL;  /* New dataspace created */
-    hid_t	ret_value;
+    H5S_t	*space;                 /* Dataspace to modify selection of */
+    H5S_t	*new_space = NULL;      /* New dataspace created */
+    hid_t	ret_value;              /* Return value */
 
     FUNC_ENTER_API(FAIL)
     H5TRACE6("i", "iSs*h*h*h*h", space_id, op, start, stride, count, block);
 
     /* Check args */
-    if (NULL == (space=H5I_object_verify(space_id, H5I_DATASPACE)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
-    if(start==NULL || count==NULL)
+    if(NULL == (space = (H5S_t *)H5I_object_verify(space_id, H5I_DATASPACE)))
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
+    if(start == NULL || count == NULL)
         HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "hyperslab not specified")
-
-    if(!(op>H5S_SELECT_NOOP && op<H5S_SELECT_INVALID))
+    if(!(op >= H5S_SELECT_SET && op <= H5S_SELECT_NOTA))
         HGOTO_ERROR(H5E_ARGS, H5E_UNSUPPORTED, FAIL, "invalid selection operation")
 
     /* Copy the first dataspace */
     if (NULL == (new_space = H5S_copy (space, TRUE, TRUE)))
-        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINIT, NULL, "unable to copy data space")
+        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINIT, NULL, "unable to copy dataspace")
 
     /* Go modify the selection in the new dataspace */
     if (H5S_select_hyperslab(new_space, op, start, stride, count, block)<0)
         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINIT, FAIL, "unable to set hyperslab selection")
 
     /* Atomize */
-    if ((ret_value=H5I_register (H5I_DATASPACE, new_space, TRUE))<0)
+    if((ret_value = H5I_register(H5I_DATASPACE, new_space, TRUE)) < 0)
         HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register dataspace atom")
 
 done:
-    if (ret_value<0 && new_space)
+    if(ret_value < 0 && new_space)
         H5S_close(new_space);
 
     FUNC_LEAVE_API(ret_value)
@@ -7671,7 +7650,7 @@ done:
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5S_combine_select
+ * Function:	H5S__combine_select
  *
  * Purpose:	Internal version of H5Scombine_select().
  *
@@ -7680,35 +7659,36 @@ done:
  * Programmer:	Quincey Koziol
  *              Tuesday, October 30, 2001
  *
- * Modifications:
+ *              Chao Mei
+ *              Wednesday, June 29, 2011
  *
  *-------------------------------------------------------------------------
  */
 static H5S_t *
-H5S_combine_select (H5S_t *space1, H5S_seloper_t op, H5S_t *space2)
+H5S__combine_select(H5S_t *space1, H5S_seloper_t op, H5S_t *space2)
 {
-    H5S_t *new_space=NULL;    /* New dataspace generated */
+    H5S_t *new_space = NULL;    /* New dataspace generated */
     hbool_t span2_owned=FALSE;          /* Flag to indicate that span2 was used in H5S_operate_hyperslab() */
     H5S_t *ret_value;         /* return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_STATIC
 
     /* Check args */
     HDassert(space1);
     HDassert(space2);
-    HDassert(op > H5S_SELECT_NOOP && op < H5S_SELECT_INVALID);
+    HDassert(op >= H5S_SELECT_OR && op <= H5S_SELECT_NOTA);
 
     /* Check that the space selections both have span trees */
     if(space1->select.sel_info.hslab->span_lst==NULL)
-        if(H5S_hyper_generate_spans(space1)<0)
+        if(H5S__hyper_generate_spans(space1)<0)
             HGOTO_ERROR(H5E_DATASPACE, H5E_UNINITIALIZED, NULL, "dataspace does not have span tree")
     if(space2->select.sel_info.hslab->span_lst==NULL)
-        if(H5S_hyper_generate_spans(space2)<0)
+        if(H5S__hyper_generate_spans(space2)<0)
             HGOTO_ERROR(H5E_DATASPACE, H5E_UNINITIALIZED, NULL, "dataspace does not have span tree")
 
     /* Copy the first dataspace */
     if (NULL == (new_space = H5S_copy (space1, TRUE, TRUE)))
-        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINIT, NULL, "unable to copy data space")
+        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINIT, NULL, "unable to copy dataspace")
 
     /* Free the current selection for the new dataspace */
     if(H5S_SELECT_RELEASE(new_space)<0)
@@ -7726,14 +7706,14 @@ H5S_combine_select (H5S_t *space1, H5S_seloper_t op, H5S_t *space2)
         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCLIP, NULL, "can't clip hyperslab information")
 
     /* Set return value */
-    ret_value=new_space;
+    ret_value = new_space;
 
 done:
-    if(ret_value==NULL && new_space!=NULL)
+    if(ret_value == NULL && new_space)
         H5S_close(new_space);
 
     FUNC_LEAVE_NOAPI(ret_value)
-}   /* end H5S_combine_select() */
+} /* end H5S__combine_select() */
 
 
 /*--------------------------------------------------------------------------
@@ -7764,37 +7744,37 @@ H5Scombine_select(hid_t space1_id, H5S_seloper_t op, hid_t space2_id)
     H5S_t	*space1;                /* First Dataspace */
     H5S_t	*space2;                /* Second Dataspace */
     H5S_t	*new_space = NULL;      /* New Dataspace */
-    hid_t	ret_value;
+    hid_t	ret_value;              /* Return value */
 
     FUNC_ENTER_API(FAIL)
     H5TRACE3("i", "iSsi", space1_id, op, space2_id);
 
     /* Check args */
-    if (NULL == (space1=H5I_object_verify(space1_id, H5I_DATASPACE)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
-    if (NULL == (space2=H5I_object_verify(space2_id, H5I_DATASPACE)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
-    if(!(op>H5S_SELECT_NOOP && op<H5S_SELECT_INVALID))
+    if(NULL == (space1 = (H5S_t *)H5I_object_verify(space1_id, H5I_DATASPACE)))
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
+    if(NULL == (space2 = (H5S_t *)H5I_object_verify(space2_id, H5I_DATASPACE)))
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
+    if(!(op >= H5S_SELECT_OR && op <= H5S_SELECT_NOTA))
         HGOTO_ERROR(H5E_ARGS, H5E_UNSUPPORTED, FAIL, "invalid selection operation")
 
     /* Check that both dataspaces have the same rank */
-    if(space1->extent.rank!=space2->extent.rank)
+    if(space1->extent.rank != space2->extent.rank)
         HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "dataspaces not same rank")
 
     /* Check that both dataspaces have hyperslab selections */
-    if(H5S_GET_SELECT_TYPE(space1)!=H5S_SEL_HYPERSLABS || H5S_GET_SELECT_TYPE(space2)!=H5S_SEL_HYPERSLABS)
+    if(H5S_GET_SELECT_TYPE(space1) != H5S_SEL_HYPERSLABS || H5S_GET_SELECT_TYPE(space2) != H5S_SEL_HYPERSLABS)
         HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "dataspaces don't have hyperslab selections")
 
     /* Go combine the dataspaces */
-    if ((new_space=H5S_combine_select(space1, op, space2))==NULL)
+    if(NULL == (new_space = H5S__combine_select(space1, op, space2)))
         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINIT, FAIL, "unable to create hyperslab selection")
 
     /* Atomize */
-    if ((ret_value=H5I_register (H5I_DATASPACE, new_space, TRUE))<0)
+    if((ret_value = H5I_register(H5I_DATASPACE, new_space, TRUE)) < 0)
         HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register dataspace atom")
 
 done:
-    if (ret_value<0 && new_space)
+    if(ret_value < 0 && new_space)
         H5S_close(new_space);
 
     FUNC_LEAVE_API(ret_value)
@@ -7831,10 +7811,10 @@ H5S_select_select (H5S_t *space1, H5S_seloper_t op, H5S_t *space2)
 
     /* Check that the space selections both have span trees */
     if(space1->select.sel_info.hslab->span_lst==NULL)
-        if(H5S_hyper_generate_spans(space1)<0)
+        if(H5S__hyper_generate_spans(space1)<0)
             HGOTO_ERROR(H5E_DATASPACE, H5E_UNINITIALIZED, FAIL, "dataspace does not have span tree")
     if(space2->select.sel_info.hslab->span_lst==NULL)
-        if(H5S_hyper_generate_spans(space2)<0)
+        if(H5S__hyper_generate_spans(space2)<0)
             HGOTO_ERROR(H5E_DATASPACE, H5E_UNINITIALIZED, FAIL, "dataspace does not have span tree")
 
     /* Take ownership of the dataspace's hyperslab spans */
@@ -7859,7 +7839,7 @@ H5S_select_select (H5S_t *space1, H5S_seloper_t op, H5S_t *space2)
 
 done:
     if(tmp_spans!=NULL)
-        H5S_hyper_free_span_info(tmp_spans);
+        H5S__hyper_free_span_info(tmp_spans);
 
     FUNC_LEAVE_NOAPI(ret_value)
 }   /* end H5S_select_select() */
@@ -7892,25 +7872,25 @@ H5Sselect_select(hid_t space1_id, H5S_seloper_t op, hid_t space2_id)
 {
     H5S_t	*space1;                /* First Dataspace */
     H5S_t	*space2;                /* Second Dataspace */
-    herr_t      ret_value=SUCCEED;       /* Return value */
+    herr_t      ret_value = SUCCEED;    /* Return value */
 
     FUNC_ENTER_API(FAIL)
     H5TRACE3("e", "iSsi", space1_id, op, space2_id);
 
     /* Check args */
-    if (NULL == (space1=H5I_object_verify(space1_id, H5I_DATASPACE)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
-    if (NULL == (space2=H5I_object_verify(space2_id, H5I_DATASPACE)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
-    if(!(op>H5S_SELECT_NOOP && op<H5S_SELECT_INVALID))
+    if(NULL == (space1 = (H5S_t *)H5I_object_verify(space1_id, H5I_DATASPACE)))
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
+    if(NULL == (space2 = (H5S_t *)H5I_object_verify(space2_id, H5I_DATASPACE)))
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
+    if(!(op >= H5S_SELECT_OR && op <= H5S_SELECT_NOTA))
         HGOTO_ERROR(H5E_ARGS, H5E_UNSUPPORTED, FAIL, "invalid selection operation")
 
     /* Check that both dataspaces have the same rank */
-    if(space1->extent.rank!=space2->extent.rank)
+    if(space1->extent.rank != space2->extent.rank)
         HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "dataspaces not same rank")
 
     /* Check that both dataspaces have hyperslab selections */
-    if(H5S_GET_SELECT_TYPE(space1)!=H5S_SEL_HYPERSLABS || H5S_GET_SELECT_TYPE(space2)!=H5S_SEL_HYPERSLABS)
+    if(H5S_GET_SELECT_TYPE(space1) != H5S_SEL_HYPERSLABS || H5S_GET_SELECT_TYPE(space2) != H5S_SEL_HYPERSLABS)
         HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "dataspaces don't have hyperslab selections")
 
     /* Go refine the first selection */
@@ -7925,7 +7905,7 @@ done:
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_get_seq_list_gen
+    H5S__hyper_get_seq_list_gen
  PURPOSE
     Create a list of offsets & lengths for a selection
  USAGE
@@ -7954,7 +7934,7 @@ done:
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_get_seq_list_gen(const H5S_t *space,H5S_sel_iter_t *iter,
+H5S__hyper_get_seq_list_gen(const H5S_t *space, H5S_sel_iter_t *iter,
     size_t maxseq, size_t maxelem, size_t *nseq, size_t *nelem,
     hsize_t *off, size_t *len)
 {
@@ -7978,7 +7958,7 @@ H5S_hyper_get_seq_list_gen(const H5S_t *space,H5S_sel_iter_t *iter,
     unsigned u;        /* Index variable */
     int i;             /* Index variable */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(space);
@@ -8341,12 +8321,12 @@ H5S_hyper_get_seq_list_gen(const H5S_t *space,H5S_sel_iter_t *iter,
     *nelem = io_used;
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-} /* end H5S_hyper_get_seq_list_gen() */
+} /* end H5S__hyper_get_seq_list_gen() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_get_seq_list_opt
+    H5S__hyper_get_seq_list_opt
  PURPOSE
     Create a list of offsets & lengths for a selection
  USAGE
@@ -8375,7 +8355,7 @@ H5S_hyper_get_seq_list_gen(const H5S_t *space,H5S_sel_iter_t *iter,
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_get_seq_list_opt(const H5S_t *space, H5S_sel_iter_t *iter,
+H5S__hyper_get_seq_list_opt(const H5S_t *space, H5S_sel_iter_t *iter,
     size_t maxseq, size_t maxelem, size_t *nseq, size_t *nelem,
     hsize_t *off, size_t *len)
 {
@@ -8412,7 +8392,7 @@ H5S_hyper_get_seq_list_opt(const H5S_t *space, H5S_sel_iter_t *iter,
     unsigned u;         /* Local index variable */
     int i;              /* Local index variable */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(space);
@@ -8787,16 +8767,16 @@ loc += fast_dim_buf_off;
     *nelem += start_io_left - io_left;
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-} /* end H5S_hyper_get_seq_list_opt() */
+} /* end H5S__hyper_get_seq_list_opt() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_get_seq_list_single
+    H5S__hyper_get_seq_list_single
  PURPOSE
     Create a list of offsets & lengths for a selection
  USAGE
-    herr_t H5S_hyper_get_seq_list_single(space, flags, iter, maxseq, maxelem, nseq, nelem, off, len)
+    herr_t H5S__hyper_get_seq_list_single(space, flags, iter, maxseq, maxelem, nseq, nelem, off, len)
         H5S_t *space;           IN: Dataspace containing selection to use.
         unsigned flags;         IN: Flags for extra information about operation
         H5S_sel_iter_t *iter;   IN/OUT: Selection iterator describing last
@@ -8822,7 +8802,7 @@ loc += fast_dim_buf_off;
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_get_seq_list_single(const H5S_t *space, H5S_sel_iter_t *iter,
+H5S__hyper_get_seq_list_single(const H5S_t *space, H5S_sel_iter_t *iter,
     size_t maxseq, size_t maxelem, size_t *nseq, size_t *nelem,
     hsize_t *off, size_t *len)
 {
@@ -8845,7 +8825,7 @@ H5S_hyper_get_seq_list_single(const H5S_t *space, H5S_sel_iter_t *iter,
     unsigned u;                 /* Local index variable */
     int i;                      /* Local index variable */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(space);
@@ -9072,16 +9052,16 @@ H5S_hyper_get_seq_list_single(const H5S_t *space, H5S_sel_iter_t *iter,
     HDassert(*nelem > 0);
 
     FUNC_LEAVE_NOAPI(SUCCEED)
-} /* end H5S_hyper_get_seq_list_single() */
+} /* end H5S__hyper_get_seq_list_single() */
 
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_get_seq_list
+    H5S__hyper_get_seq_list
  PURPOSE
     Create a list of offsets & lengths for a selection
  USAGE
-    herr_t H5S_hyper_get_seq_list(space,flags,iter,maxseq,maxelem,nseq,nelem,off,len)
+    herr_t H5S__hyper_get_seq_list(space,flags,iter,maxseq,maxelem,nseq,nelem,off,len)
         H5S_t *space;           IN: Dataspace containing selection to use.
         unsigned flags;         IN: Flags for extra information about operation
         H5S_sel_iter_t *iter;   IN/OUT: Selection iterator describing last
@@ -9107,13 +9087,13 @@ H5S_hyper_get_seq_list_single(const H5S_t *space, H5S_sel_iter_t *iter,
  REVISION LOG
 --------------------------------------------------------------------------*/
 static herr_t
-H5S_hyper_get_seq_list(const H5S_t *space, unsigned H5_ATTR_UNUSED flags, H5S_sel_iter_t *iter,
+H5S__hyper_get_seq_list(const H5S_t *space, unsigned H5_ATTR_UNUSED flags, H5S_sel_iter_t *iter,
     size_t maxseq, size_t maxelem, size_t *nseq, size_t *nelem,
     hsize_t *off, size_t *len)
 {
     herr_t ret_value = FAIL;    /* return value */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_STATIC_NOERR
 
     /* Check args */
     HDassert(space);
@@ -9206,7 +9186,7 @@ H5S_hyper_get_seq_list(const H5S_t *space, unsigned H5_ATTR_UNUSED flags, H5S_se
             len++;
 
             /* Advance the hyperslab iterator */
-            H5S_hyper_iter_next(iter, actual_elem);
+            H5S__hyper_iter_next(iter, actual_elem);
 
             /* Decrement the number of elements left in selection */
             iter->elmt_left -= actual_elem;
@@ -9240,17 +9220,17 @@ H5S_hyper_get_seq_list(const H5S_t *space, unsigned H5_ATTR_UNUSED flags, H5S_se
         /* Check for single block selection */
         if(single_block)
             /* Use single-block optimized call to generate sequence list */
-            ret_value = H5S_hyper_get_seq_list_single(space, iter, maxseq, maxelem, nseq, nelem, off, len);
+            ret_value = H5S__hyper_get_seq_list_single(space, iter, maxseq, maxelem, nseq, nelem, off, len);
         else
             /* Use optimized call to generate sequence list */
-            ret_value = H5S_hyper_get_seq_list_opt(space, iter, maxseq, maxelem, nseq, nelem, off, len);
+            ret_value = H5S__hyper_get_seq_list_opt(space, iter, maxseq, maxelem, nseq, nelem, off, len);
     } /* end if */
     else
         /* Call the general sequence generator routine */
-        ret_value = H5S_hyper_get_seq_list_gen(space, iter, maxseq, maxelem, nseq, nelem, off, len);
+        ret_value = H5S__hyper_get_seq_list_gen(space, iter, maxseq, maxelem, nseq, nelem, off, len);
 
     FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5S_hyper_get_seq_list() */
+} /* end H5S__hyper_get_seq_list() */
 
 
 /*--------------------------------------------------------------------------
@@ -9379,7 +9359,7 @@ H5S__hyper_project_intersection(const H5S_t *src_space, const H5S_t *dst_space,
     /* Allocate space for the hyperslab selection information (note this sets
      * diminfo_valid to FALSE, diminfo arrays to 0, and span list to NULL) */
     if((proj_space->select.sel_info.hslab = H5FL_CALLOC(H5S_hyper_sel_t)) == NULL)
-        HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "can't allocate hyperslab info")
+        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, FAIL, "can't allocate hyperslab info")
 
     /* Set selection type */
     proj_space->select.type = H5S_sel_hyper;
@@ -9563,13 +9543,13 @@ H5S__hyper_project_intersection(const H5S_t *src_space, const H5S_t *dst_space,
                             /* Append complete lower dimension span tree to
                              * current dimension */
                             low = curr_span_up_dim[i - 1] % proj_space->extent.size[i - 1];
-                            if(H5S_hyper_append_span(&prev_span[i - 1], &curr_span_tree[i - 1], low, low, curr_span_tree[i], NULL) < 0)
-                                HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
+                            if(H5S__hyper_append_span(&prev_span[i - 1], &curr_span_tree[i - 1], low, low, curr_span_tree[i], NULL) < 0)
+                                HGOTO_ERROR(H5E_DATASPACE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                             /* Reset lower dimension's span tree and previous
                              * span since we just committed it and will start
                              * over with a new one */
-                            if(H5S_hyper_free_span_info(curr_span_tree[i]) < 0)
+                            if(H5S__hyper_free_span_info(curr_span_tree[i]) < 0)
                                 HGOTO_ERROR(H5E_DATASPACE, H5E_CANTFREE, FAIL, "can't free span info")
                             curr_span_tree[i] = NULL;
                             prev_span[i] = NULL;
@@ -9588,8 +9568,8 @@ H5S__hyper_project_intersection(const H5S_t *src_space, const H5S_t *dst_space,
                     high = low + (hsize_t)span_len - (hsize_t)1;
 
                     /* Append span in lowest dimension */
-                    if(H5S_hyper_append_span(&prev_span[proj_rank - 1], &curr_span_tree[proj_rank - 1], low, high, NULL, NULL) < 0)
-                        HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
+                    if(H5S__hyper_append_span(&prev_span[proj_rank - 1], &curr_span_tree[proj_rank - 1], low, high, NULL, NULL) < 0)
+                        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
                     /* Update remaining offset and length */
                     proj_off += (hsize_t)span_len;
@@ -9611,11 +9591,11 @@ loop_end:
 
             /* Append remaining span tree to higher dimension */
             low = curr_span_up_dim[i - 1] % proj_space->extent.size[i - 1];
-            if(H5S_hyper_append_span(&prev_span[i - 1], &curr_span_tree[i - 1], low, low, curr_span_tree[i], NULL) < 0)
-                HGOTO_ERROR(H5E_RESOURCE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
+            if(H5S__hyper_append_span(&prev_span[i - 1], &curr_span_tree[i - 1], low, low, curr_span_tree[i], NULL) < 0)
+                HGOTO_ERROR(H5E_DATASPACE, H5E_CANTAPPEND, FAIL, "can't allocate hyperslab span")
 
             /* Reset span tree */
-            if(H5S_hyper_free_span_info(curr_span_tree[i]) < 0)
+            if(H5S__hyper_free_span_info(curr_span_tree[i]) < 0)
                 HGOTO_ERROR(H5E_DATASPACE, H5E_CANTFREE, FAIL, "can't free span info")
             curr_span_tree[i] = NULL;
         } /* end if */
@@ -9626,12 +9606,11 @@ loop_end:
         curr_span_tree[0] = NULL;
 
         /* Set the number of elements in current selection */
-        proj_space->select.num_elem = H5S_hyper_spans_nelem(proj_space->select.sel_info.hslab->span_lst);
+        proj_space->select.num_elem = H5S__hyper_spans_nelem(proj_space->select.sel_info.hslab->span_lst);
 
         /* Attempt to rebuild "optimized" start/stride/count/block information.
          * from resulting hyperslab span tree */
-        if(H5S_hyper_rebuild(proj_space) < 0)
-            HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCOUNT, FAIL, "can't rebuild hyperslab info")
+        H5S__hyper_rebuild(proj_space);
     } /* end if */
     else
         /* If we did not add anything to proj_space, select none instead */
@@ -9666,7 +9645,7 @@ done:
         /* Free span trees */
         for(i = 0; i < proj_rank; i++)
             if(curr_span_tree[i]) {
-                if(H5S_hyper_free_span_info(curr_span_tree[i]) < 0)
+                if(H5S__hyper_free_span_info(curr_span_tree[i]) < 0)
                     HGOTO_ERROR(H5E_DATASPACE, H5E_CANTFREE, FAIL, "can't free span info")
                 curr_span_tree[i] = NULL;
             } /* end if */
@@ -9716,14 +9695,14 @@ H5S__hyper_subtract(H5S_t *space, H5S_t *subtract_space)
 
     /* Check that the space selections both have span trees */
     if(space->select.sel_info.hslab->span_lst == NULL)
-        if(H5S_hyper_generate_spans(space) < 0)
+        if(H5S__hyper_generate_spans(space) < 0)
             HGOTO_ERROR(H5E_DATASPACE, H5E_UNINITIALIZED, FAIL, "dataspace does not have span tree")
     if(subtract_space->select.sel_info.hslab->span_lst == NULL)
-        if(H5S_hyper_generate_spans(subtract_space) < 0)
+        if(H5S__hyper_generate_spans(subtract_space) < 0)
             HGOTO_ERROR(H5E_DATASPACE, H5E_UNINITIALIZED, FAIL, "dataspace does not have span tree")
 
     /* Generate lists of spans which overlap and don't overlap */
-    if(H5S_hyper_clip_spans(space->select.sel_info.hslab->span_lst, subtract_space->select.sel_info.hslab->span_lst, &a_not_b, &a_and_b, &b_not_a)<0)
+    if(H5S__hyper_clip_spans(space->select.sel_info.hslab->span_lst, subtract_space->select.sel_info.hslab->span_lst, &a_not_b, &a_and_b, &b_not_a)<0)
         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCLIP, FAIL, "can't clip hyperslab information")
 
     /* Reset the other dataspace selection information */
@@ -9732,7 +9711,7 @@ H5S__hyper_subtract(H5S_t *space, H5S_t *subtract_space)
 
     /* Allocate space for the hyperslab selection information */
     if((space->select.sel_info.hslab = H5FL_CALLOC(H5S_hyper_sel_t)) == NULL)
-        HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't allocate hyperslab info")
+        HGOTO_ERROR(H5E_DATASPACE, H5E_NOSPACE, FAIL, "can't allocate hyperslab info")
 
     /* Set unlim_dim */
     space->select.sel_info.hslab->unlim_dim = -1;
@@ -9744,12 +9723,11 @@ H5S__hyper_subtract(H5S_t *space, H5S_t *subtract_space)
         a_not_b = NULL;
 
         /* Update number of elements */
-        space->select.num_elem = H5S_hyper_spans_nelem(space->select.sel_info.hslab->span_lst);
+        space->select.num_elem = H5S__hyper_spans_nelem(space->select.sel_info.hslab->span_lst);
 
         /* Attempt to rebuild "optimized" start/stride/count/block information.
          * from resulting hyperslab span tree */
-        if(H5S_hyper_rebuild(space) < 0)
-            HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCOUNT, FAIL, "can't rebuild hyperslab info")
+        H5S__hyper_rebuild(space);
     } /* end if */
     else {
         H5S_hyper_span_info_t *spans;     /* Empty hyperslab span tree */
@@ -9759,7 +9737,7 @@ H5S__hyper_subtract(H5S_t *space, H5S_t *subtract_space)
 
         /* Allocate a span info node */
         if(NULL == (spans = H5FL_MALLOC(H5S_hyper_span_info_t)))
-            HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "can't allocate hyperslab span")
+            HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, FAIL, "can't allocate hyperslab span")
 
         /* Set the reference count */
         spans->count = 1;
@@ -9777,12 +9755,12 @@ H5S__hyper_subtract(H5S_t *space, H5S_t *subtract_space)
 done:
     /* Free span trees */
     if(a_and_b)
-        H5S_hyper_free_span_info(a_and_b);
+        H5S__hyper_free_span_info(a_and_b);
     if(b_not_a)
-        H5S_hyper_free_span_info(b_not_a);
+        H5S__hyper_free_span_info(b_not_a);
     if(a_not_b) {
         HDassert(ret_value < 0);
-        H5S_hyper_free_span_info(b_not_a);
+        H5S__hyper_free_span_info(b_not_a);
     } /* end if */
 
     FUNC_LEAVE_NOAPI(ret_value)
@@ -9940,7 +9918,7 @@ H5S_hyper_clip_unlim(H5S_t *space, hsize_t clip_size)
 
             /* Generate span tree in selection */
             if(!hslab->span_lst)
-                if(H5S_hyper_generate_spans(space) < 0)
+                if(H5S__hyper_generate_spans(space) < 0)
                     HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINIT, FAIL, "unable to generate span tree")
 
             /* Indicate that the regular dimensions are no longer valid */
@@ -9948,7 +9926,7 @@ H5S_hyper_clip_unlim(H5S_t *space, hsize_t clip_size)
 
             /* "And" selection with calculated block to perform clip operation
              */
-            if(H5S_generate_hyperslab(space, H5S_SELECT_AND, start, _ones, _ones, block) < 0)
+            if(H5S__generate_hyperslab(space, H5S_SELECT_AND, start, H5S_hyper_ones_g, H5S_hyper_ones_g, block) < 0)
                 HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINSERT, FAIL, "can't generate hyperslabs")
         } /* end if */
         else
@@ -10382,7 +10360,7 @@ H5Sis_regular_hyperslab(hid_t spaceid)
     if(H5S_GET_SELECT_TYPE(space) != H5S_SEL_HYPERSLABS)
         HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a hyperslab selection")
 
-    ret_value = H5S_hyper_is_regular(space);
+    ret_value = H5S__hyper_is_regular(space);
 
 done:
     FUNC_LEAVE_API(ret_value)
@@ -10431,7 +10409,7 @@ H5Sget_regular_hyperslab(hid_t spaceid, hsize_t start[], hsize_t stride[],
         HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
     if(H5S_GET_SELECT_TYPE(space) != H5S_SEL_HYPERSLABS)
         HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a hyperslab selection")
-    if(TRUE != H5S_hyper_is_regular(space))
+    if(TRUE != H5S__hyper_is_regular(space))
         HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a regular hyperslab selection")
 
     /* Retrieve hyperslab parameters */
diff --git a/src/H5Smpio.c b/src/H5Smpio.c
index 1f97bc8..0431590 100644
--- a/src/H5Smpio.c
+++ b/src/H5Smpio.c
@@ -1086,7 +1086,7 @@ H5S_mpio_space_type(const H5S_t *space, size_t elmt_size, MPI_Datatype *new_type
 
         case H5S_NO_CLASS:
         default:
-            HDassert("unknown data space type" && 0);
+            HDassert("unknown dataspace type" && 0);
             break;
     } /* end switch */
 
diff --git a/src/H5Snone.c b/src/H5Snone.c
index 3492325..55db358 100644
--- a/src/H5Snone.c
+++ b/src/H5Snone.c
@@ -17,7 +17,7 @@
  * Programmer:  Quincey Koziol <koziol@ncsa.uiuc.edu>
  *              Tuesday, November 10, 1998
  *
- * Purpose:	"None" selection data space I/O functions.
+ * Purpose:	"None" selection dataspace I/O functions.
  */
 
 #include "H5Smodule.h"          /* This source code file is part of the H5S module */
@@ -49,7 +49,7 @@ static int H5S__none_unlim_dim(const H5S_t *space);
 static htri_t H5S_none_is_contiguous(const H5S_t *space);
 static htri_t H5S_none_is_single(const H5S_t *space);
 static htri_t H5S_none_is_regular(const H5S_t *space);
-static herr_t H5S_none_adjust_u(H5S_t *space, const hsize_t *offset);
+static void H5S_none_adjust_u(H5S_t *space, const hsize_t *offset);
 static herr_t H5S_none_project_scalar(const H5S_t *space, hsize_t *offset);
 static herr_t H5S_none_project_simple(const H5S_t *space, H5S_t *new_space, hsize_t *offset);
 static herr_t H5S_none_iter_init(H5S_sel_iter_t *iter, const H5S_t *space);
@@ -746,11 +746,11 @@ H5S_none_is_regular(const H5S_t H5_ATTR_UNUSED *space)
  PURPOSE
     Adjust an "none" selection by subtracting an offset
  USAGE
-    herr_t H5S_none_adjust_u(space, offset)
+    void H5S_none_adjust_u(space, offset)
         H5S_t *space;           IN/OUT: Pointer to dataspace to adjust
         const hsize_t *offset; IN: Offset to subtract
  RETURNS
-    Non-negative on success, negative on failure
+    None
  DESCRIPTION
     Moves selection by subtracting an offset from it.
  GLOBAL VARIABLES
@@ -758,7 +758,7 @@ H5S_none_is_regular(const H5S_t H5_ATTR_UNUSED *space)
  EXAMPLES
  REVISION LOG
 --------------------------------------------------------------------------*/
-static herr_t
+static void
 H5S_none_adjust_u(H5S_t H5_ATTR_UNUSED *space, const hsize_t H5_ATTR_UNUSED *offset)
 {
     FUNC_ENTER_NOAPI_NOINIT_NOERR
@@ -767,7 +767,7 @@ H5S_none_adjust_u(H5S_t H5_ATTR_UNUSED *space, const hsize_t H5_ATTR_UNUSED *off
     HDassert(space);
     HDassert(offset);
 
-    FUNC_LEAVE_NOAPI(FAIL)
+    FUNC_LEAVE_NOAPI_VOID
 }   /* H5S_none_adjust_u() */
 
 
@@ -900,7 +900,7 @@ H5Sselect_none(hid_t spaceid)
 
     /* Check args */
     if(NULL == (space = (H5S_t *)H5I_object_verify(spaceid, H5I_DATASPACE)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
 
     /* Change to "none" selection */
     if(H5S_select_none(space) < 0)
diff --git a/src/H5Spkg.h b/src/H5Spkg.h
index e57650a..1d65a57 100644
--- a/src/H5Spkg.h
+++ b/src/H5Spkg.h
@@ -101,7 +101,7 @@ struct H5S_hyper_span_t {
     struct H5S_hyper_span_t *next;     /* Pointer to next span in list */
 };
 
-/* Information about a list of hyperslab spans */
+/* Information about a list of hyperslab spans in one dimension */
 struct H5S_hyper_span_info_t {
     unsigned count;                    /* Ref. count of number of spans which share this span */
     struct H5S_hyper_span_info_t *scratch;  /* Scratch pointer
@@ -163,7 +163,7 @@ typedef htri_t (*H5S_sel_is_single_func_t)(const H5S_t *space);
 /* Method to determine if current selection is "regular" */
 typedef htri_t (*H5S_sel_is_regular_func_t)(const H5S_t *space);
 /* Method to adjust a selection by an offset */
-typedef herr_t (*H5S_sel_adjust_u_func_t)(H5S_t *space, const hsize_t *offset);
+typedef void (*H5S_sel_adjust_u_func_t)(H5S_t *space, const hsize_t *offset);
 /* Method to construct single element projection onto scalar dataspace */
 typedef herr_t (*H5S_sel_project_scalar)(const H5S_t *space, hsize_t *offset);
 /* Method to construct selection projection onto/into simple dataspace */
@@ -185,7 +185,7 @@ typedef struct {
     H5S_sel_deserialize_func_t deserialize;     /* Method to store create selection from "serialized" form (a byte sequence suitable for storing on disk) */
     H5S_sel_bounds_func_t bounds;               /* Method to determine to smallest n-D bounding box containing the current selection */
     H5S_sel_offset_func_t offset;               /* Method to determine linear offset of initial element in selection within dataspace */
-    H5S_sel_unlim_dim_func_t unlim_dim;              /* Method to get unlimited dimension of selection (or -1 for none) */
+    H5S_sel_unlim_dim_func_t unlim_dim;         /* Method to get unlimited dimension of selection (or -1 for none) */
     H5S_sel_num_elem_non_unlim_func_t num_elem_non_unlim; /* Method to get the number of elements in a slice through the unlimited dimension */
     H5S_sel_is_contiguous_func_t is_contiguous; /* Method to determine if current selection is contiguous */
     H5S_sel_is_single_func_t is_single;         /* Method to determine if current selection is a single block */
@@ -199,12 +199,15 @@ typedef struct {
 /* Selection information object */
 typedef struct {
     const H5S_select_class_t *type;     /* Pointer to selection's class info */
+
     hbool_t offset_changed;             /* Indicate that the offset for the selection has been changed */
     hssize_t offset[H5S_MAX_RANK];      /* Offset within the extent */
-    hsize_t num_elem;   /* Number of elements in selection */
+
+    hsize_t num_elem;                   /* Number of elements in selection */
+
     union {
-        H5S_pnt_list_t *pnt_lst; /* List of selected points (order is important) */
-        H5S_hyper_sel_t *hslab;  /* Info about hyperslab selections */
+        H5S_pnt_list_t *pnt_lst;        /* Info about list of selected points (order is important) */
+        H5S_hyper_sel_t *hslab;         /* Info about hyperslab selection */
     } sel_info;
 } H5S_select_t;
 
diff --git a/src/H5Spoint.c b/src/H5Spoint.c
index 1531bac..9f273db 100644
--- a/src/H5Spoint.c
+++ b/src/H5Spoint.c
@@ -17,7 +17,7 @@
  * Programmer:  Quincey Koziol <koziol@ncsa.uiuc.edu>
  *              Tuesday, June 16, 1998
  *
- * Purpose:	Point selection data space I/O functions.
+ * Purpose:	Point selection dataspace I/O functions.
  */
 
 #include "H5Smodule.h"          /* This source code file is part of the H5S module */
@@ -50,7 +50,7 @@ static int H5S__point_unlim_dim(const H5S_t *space);
 static htri_t H5S_point_is_contiguous(const H5S_t *space);
 static htri_t H5S_point_is_single(const H5S_t *space);
 static htri_t H5S_point_is_regular(const H5S_t *space);
-static herr_t H5S_point_adjust_u(H5S_t *space, const hsize_t *offset);
+static void H5S_point_adjust_u(H5S_t *space, const hsize_t *offset);
 static herr_t H5S_point_project_scalar(const H5S_t *space, hsize_t *offset);
 static herr_t H5S_point_project_simple(const H5S_t *space, H5S_t *new_space, hsize_t *offset);
 static herr_t H5S_point_iter_init(H5S_sel_iter_t *iter, const H5S_t *space);
@@ -428,7 +428,7 @@ H5S_point_add(H5S_t *space, H5S_seloper_t op, size_t num_elem, const hsize_t *co
     /* Insert the list of points selected in the proper place */
     if(op == H5S_SELECT_SET || op == H5S_SELECT_PREPEND) {
         /* Append current list, if there is one */
-        if(space->select.sel_info.pnt_lst->head != NULL)
+        if(NULL != space->select.sel_info.pnt_lst->head)
             curr->next = space->select.sel_info.pnt_lst->head;
 
         /* Put new list in point selection */
@@ -689,8 +689,8 @@ static htri_t
 H5S_point_is_valid (const H5S_t *space)
 {
     H5S_pnt_node_t *curr;      /* Point information nodes */
-    unsigned u;                   /* Counter */
-    htri_t ret_value=TRUE;     /* return value */
+    unsigned u;                 /* Counter */
+    htri_t ret_value = TRUE;    /* Return value */
 
     FUNC_ENTER_NOAPI_NOINIT_NOERR
 
@@ -744,7 +744,7 @@ H5Sget_select_elem_npoints(hid_t spaceid)
 
     /* Check args */
     if(NULL == (space = (H5S_t *)H5I_object_verify(spaceid, H5I_DATASPACE)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
     if(H5S_GET_SELECT_TYPE(space) != H5S_SEL_POINTS)
         HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an element selection")
 
@@ -788,7 +788,7 @@ H5S_point_serial_size (const H5S_t *space)
      *  <type (4 bytes)> + <version (4 bytes)> + <padding (4 bytes)> +
      *      <length (4 bytes)> + <rank (4 bytes)> + <# of points (4 bytes)> = 24 bytes
      */
-    ret_value=24;
+    ret_value = 24;
 
     /* Count points in selection */
     curr=space->select.sel_info.pnt_lst->head;
@@ -1057,7 +1057,7 @@ H5Sget_select_elem_pointlist(hid_t spaceid, hsize_t startpoint,
     if(NULL == buf)
         HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid pointer")
     if(NULL == (space = (H5S_t *)H5I_object_verify(spaceid, H5I_DATASPACE)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
     if(H5S_GET_SELECT_TYPE(space) != H5S_SEL_POINTS)
         HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a point selection")
 
@@ -1099,11 +1099,12 @@ H5S_point_bounds(const H5S_t *space, hsize_t *start, hsize_t *end)
 {
     H5S_pnt_node_t *node;       /* Point node */
     unsigned rank;              /* Dataspace rank */
-    unsigned u;                 /* index variable */
-    herr_t ret_value = SUCCEED;   /* Return value */
+    unsigned u;                 /* Local index variable */
+    herr_t ret_value = SUCCEED; /* Return value */
 
     FUNC_ENTER_NOAPI_NOINIT
 
+    /* Sanity check */
     HDassert(space);
     HDassert(start);
     HDassert(end);
@@ -1355,11 +1356,11 @@ H5S_point_is_regular(const H5S_t *space)
  PURPOSE
     Adjust a "point" selection by subtracting an offset
  USAGE
-    herr_t H5S_point_adjust_u(space, offset)
+    void H5S_point_adjust_u(space, offset)
         H5S_t *space;           IN/OUT: Pointer to dataspace to adjust
         const hsize_t *offset; IN: Offset to subtract
  RETURNS
-    Non-negative on success, negative on failure
+    None
  DESCRIPTION
     Moves a point selection by subtracting an offset from it.
  GLOBAL VARIABLES
@@ -1367,7 +1368,7 @@ H5S_point_is_regular(const H5S_t *space)
  EXAMPLES
  REVISION LOG
 --------------------------------------------------------------------------*/
-static herr_t
+static void
 H5S_point_adjust_u(H5S_t *space, const hsize_t *offset)
 {
     H5S_pnt_node_t *node;               /* Point node */
@@ -1397,7 +1398,7 @@ H5S_point_adjust_u(H5S_t *space, const hsize_t *offset)
         node = node->next;
     } /* end while */
 
-    FUNC_LEAVE_NOAPI(SUCCEED)
+    FUNC_LEAVE_NOAPI_VOID
 }   /* H5S_point_adjust_u() */
 
 
@@ -1694,7 +1695,7 @@ H5S_point_get_seq_list(const H5S_t *space, unsigned flags, H5S_sel_iter_t *iter,
 
     /* Get the dataspace dimensions */
     if((ndims = H5S_get_simple_extent_dims (space, dims, NULL)) < 0)
-        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINIT, FAIL, "unable to retrieve data space dimensions")
+        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINIT, FAIL, "unable to retrieve dataspace dimensions")
 
     /* Walk through the points in the selection, starting at the current */
     /*  location in the iterator */
diff --git a/src/H5Sprivate.h b/src/H5Sprivate.h
index d00b5be..ca8d067 100644
--- a/src/H5Sprivate.h
+++ b/src/H5Sprivate.h
@@ -148,7 +148,6 @@ typedef struct H5S_sel_iter_op_t {
 #define H5S_GET_SELECT_TYPE(S)          ((S)->select.type->type)
 #define H5S_SELECT_GET_SEQ_LIST(S,FLAGS,ITER,MAXSEQ,MAXBYTES,NSEQ,NBYTES,OFF,LEN)             ((*(S)->select.type->get_seq_list)(S,FLAGS,ITER,MAXSEQ,MAXBYTES,NSEQ,NBYTES,OFF,LEN))
 #define H5S_SELECT_VALID(S)             ((*(S)->select.type->is_valid)(S))
-#define H5S_SELECT_RELEASE(S)           ((*(S)->select.type->release)(S))
 #define H5S_SELECT_SERIAL_SIZE(S)       ((*(S)->select.type->serial_size)(S))
 #define H5S_SELECT_SERIALIZE(S,BUF)     ((*(S)->select.type->serialize)(S,BUF))
 #define H5S_SELECT_BOUNDS(S,START,END)  ((*(S)->select.type->bounds)(S,START,END))
@@ -174,7 +173,6 @@ typedef struct H5S_sel_iter_op_t {
 #define H5S_GET_SELECT_TYPE(S)          (H5S_get_select_type(S))
 #define H5S_SELECT_GET_SEQ_LIST(S,FLAGS,ITER,MAXSEQ,MAXBYTES,NSEQ,NBYTES,OFF,LEN)       (H5S_select_get_seq_list(S,FLAGS,ITER,MAXSEQ,MAXBYTES,NSEQ,NBYTES,OFF,LEN))
 #define H5S_SELECT_VALID(S)             (H5S_select_valid(S))
-#define H5S_SELECT_RELEASE(S)           (H5S_select_release(S))
 #define H5S_SELECT_SERIAL_SIZE(S)       (H5S_select_serial_size(S))
 #define H5S_SELECT_SERIALIZE(S,BUF)     (H5S_select_serialize(S,BUF))
 #define H5S_SELECT_BOUNDS(S,START,END)  (H5S_get_select_bounds(S,START,END))
@@ -193,8 +191,9 @@ typedef struct H5S_sel_iter_op_t {
 #define H5S_SELECT_ITER_NEXT_BLOCK(ITER)        (H5S_select_iter_next_block(ITER))
 #define H5S_SELECT_ITER_RELEASE(ITER)   (H5S_select_iter_release(ITER))
 #endif /* H5S_MODULE */
-/* Handle these two callbacks in a special way, since they have prologs that need to be executed */
+/* Handle these callbacks in a special way, since they have prologs that need to be executed */
 #define H5S_SELECT_COPY(DST,SRC,SHARE)  (H5S_select_copy(DST,SRC,SHARE))
+#define H5S_SELECT_RELEASE(S)           (H5S_select_release(S))
 #define H5S_SELECT_DESERIALIZE(S,BUF)   (H5S_select_deserialize(S,BUF))
 
 
@@ -263,7 +262,7 @@ H5_DLL herr_t H5S_select_serialize(const H5S_t *space, uint8_t **p);
 H5_DLL htri_t H5S_select_is_contiguous(const H5S_t *space);
 H5_DLL htri_t H5S_select_is_single(const H5S_t *space);
 H5_DLL htri_t H5S_select_is_regular(const H5S_t *space);
-H5_DLL herr_t H5S_select_adjust_u(H5S_t *space, const hsize_t *offset);
+H5_DLL void H5S_select_adjust_u(H5S_t *space, const hsize_t *offset);
 H5_DLL herr_t H5S_select_project_scalar(const H5S_t *space, hsize_t *offset);
 H5_DLL herr_t H5S_select_project_simple(const H5S_t *space, H5S_t *new_space, hsize_t *offset);
 H5_DLL herr_t H5S_select_project_intersection(const H5S_t *src_space,
@@ -282,16 +281,16 @@ H5_DLL herr_t H5S_select_elements(H5S_t *space, H5S_seloper_t op,
     size_t num_elem, const hsize_t *coord);
 
 /* Operations on hyperslab selections */
-H5_DLL herr_t H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op, const hsize_t start[],
+H5_DLL herr_t H5S_select_hyperslab(H5S_t *space, H5S_seloper_t op, const hsize_t start[],
     const hsize_t *stride, const hsize_t count[], const hsize_t *block);
 H5_DLL herr_t H5S_hyper_add_span_element(H5S_t *space, unsigned rank,
-    hsize_t *coords);
+    const hsize_t *coords);
 H5_DLL herr_t H5S_hyper_reset_scratch(H5S_t *space);
 H5_DLL herr_t H5S_hyper_convert(H5S_t *space);
 #ifdef LATER
 H5_DLL htri_t H5S_hyper_intersect (H5S_t *space1, H5S_t *space2);
 #endif /* LATER */
-H5_DLL htri_t H5S_hyper_intersect_block (H5S_t *space, hsize_t *start, hsize_t *end);
+H5_DLL htri_t H5S_hyper_intersect_block(H5S_t *space, const hsize_t *start, const hsize_t *end);
 H5_DLL herr_t H5S_hyper_adjust_s(H5S_t *space, const hssize_t *offset);
 H5_DLL htri_t H5S_hyper_normalize_offset(H5S_t *space, hssize_t *old_offset);
 H5_DLL herr_t H5S_hyper_denormalize_offset(H5S_t *space, const hssize_t *old_offset);
diff --git a/src/H5Spublic.h b/src/H5Spublic.h
index 721c4bf..37bcef0 100644
--- a/src/H5Spublic.h
+++ b/src/H5Spublic.h
@@ -34,8 +34,8 @@
 typedef enum H5S_class_t {
     H5S_NO_CLASS         = -1,  /*error                                      */
     H5S_SCALAR           = 0,   /*scalar variable                            */
-    H5S_SIMPLE           = 1,   /*simple data space                          */
-    H5S_NULL             = 2    /*null data space                            */
+    H5S_SIMPLE           = 1,   /*simple dataspace                           */
+    H5S_NULL             = 2    /*null dataspace                             */
 } H5S_class_t;
 
 /* Different ways of combining selections */
diff --git a/src/H5Sselect.c b/src/H5Sselect.c
index 2968bed..c5bd73a 100644
--- a/src/H5Sselect.c
+++ b/src/H5Sselect.c
@@ -114,7 +114,7 @@ H5S_select_offset(H5S_t *space, const hssize_t *offset)
  REVISION LOG
 --------------------------------------------------------------------------*/
 herr_t
-H5S_select_copy (H5S_t *dst, const H5S_t *src, hbool_t share_selection)
+H5S_select_copy(H5S_t *dst, const H5S_t *src, hbool_t share_selection)
 {
     herr_t ret_value = FAIL;    /* Return value */
 
@@ -125,10 +125,10 @@ H5S_select_copy (H5S_t *dst, const H5S_t *src, hbool_t share_selection)
     HDassert(src);
 
     /* Copy regular fields */
-    dst->select=src->select;
+    dst->select = src->select;
 
     /* Perform correct type of copy based on the type of selection */
-    if((ret_value=(*src->select.type->copy)(dst,src,share_selection))<0)
+    if((ret_value = (*src->select.type->copy)(dst,src,share_selection)) < 0)
         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCOPY, FAIL, "can't copy selection specific information")
 
 done:
@@ -150,8 +150,6 @@ done:
  *      pattern, don't call it directly, use the appropriate macro
  *      defined in H5Sprivate.h.
  *
- * Modifications:
- *
  *-------------------------------------------------------------------------
  */
 herr_t
@@ -159,13 +157,15 @@ H5S_select_release(H5S_t *ds)
 {
     herr_t ret_value = FAIL;    /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_NOAPI_NOINIT
 
     HDassert(ds);
 
     /* Call the selection type's release function */
-    ret_value=(*ds->select.type->release)(ds);
+    if((ret_value = (*ds->select.type->release)(ds)) < 0)
+        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTRELEASE, FAIL, "unable to release selection")
 
+done:
     FUNC_LEAVE_NOAPI(ret_value)
 }   /* end H5S_select_release() */
 
@@ -185,8 +185,6 @@ H5S_select_release(H5S_t *ds)
  *      pattern, don't call it directly, use the appropriate macro
  *      defined in H5Sprivate.h.
  *
- * Modifications:
- *
  *-------------------------------------------------------------------------
  */
 herr_t
@@ -196,13 +194,15 @@ H5S_select_get_seq_list(const H5S_t *space, unsigned flags,
 {
     herr_t ret_value = FAIL;    /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOERR
+    FUNC_ENTER_NOAPI_NOINIT
 
     HDassert(space);
 
     /* Call the selection type's get_seq_list function */
-    ret_value = (*space->select.type->get_seq_list)(space, flags, iter, maxseq, maxbytes, nseq, nbytes, off, len);
+    if((ret_value = (*space->select.type->get_seq_list)(space, flags, iter, maxseq, maxbytes, nseq, nbytes, off, len)) < 0)
+        HGOTO_ERROR(H5E_DATASPACE, H5E_CANTGET, FAIL, "unable to get selection sequence list")
 
+done:
     FUNC_LEAVE_NOAPI(ret_value)
 }   /* end H5S_select_get_seq_list() */
 
@@ -222,8 +222,6 @@ H5S_select_get_seq_list(const H5S_t *space, unsigned flags,
  *      pattern, don't call it directly, use the appropriate macro
  *      defined in H5Sprivate.h.
  *
- * Modifications:
- *
  *-------------------------------------------------------------------------
  */
 hssize_t
@@ -897,11 +895,11 @@ H5S_select_is_regular(const H5S_t *space)
  PURPOSE
     Adjust a selection by subtracting an offset
  USAGE
-    herr_t H5S_select_adjust_u(space, offset)
+    void H5S_select_adjust_u(space, offset)
         H5S_t *space;           IN/OUT: Pointer to dataspace to adjust
         const hsize_t *offset; IN: Offset to subtract
  RETURNS
-    Non-negative on success, negative on failure
+    None
  DESCRIPTION
     Moves a selection by subtracting an offset from it.
  GLOBAL VARIABLES
@@ -912,7 +910,7 @@ H5S_select_is_regular(const H5S_t *space)
  EXAMPLES
  REVISION LOG
 --------------------------------------------------------------------------*/
-herr_t
+void
 H5S_select_adjust_u(H5S_t *space, const hsize_t *offset)
 {
     herr_t ret_value = FAIL;    /* Return value */
@@ -921,10 +919,11 @@ H5S_select_adjust_u(H5S_t *space, const hsize_t *offset)
 
     /* Check args */
     HDassert(space);
+    HDassert(offset);
 
-    ret_value = (*space->select.type->adjust_u)(space, offset);
+    (*space->select.type->adjust_u)(space, offset);
 
-    FUNC_LEAVE_NOAPI(ret_value)
+    FUNC_LEAVE_NOAPI_VOID
 }   /* H5S_select_adjust_u() */
 
 
@@ -1612,8 +1611,8 @@ H5S_select_shape_same(const H5S_t *space1, const H5S_t *space2)
 {
     H5S_sel_iter_t *iter_a = NULL;  /* Selection a iteration info */
     H5S_sel_iter_t *iter_b = NULL;  /* Selection b iteration info */
-    hbool_t iter_a_init = 0;  /* Selection a iteration info has been initialized */
-    hbool_t iter_b_init = 0;  /* Selection b iteration info has been initialized */
+    hbool_t iter_a_init = FALSE;  /* Selection a iteration info has been initialized */
+    hbool_t iter_b_init = FALSE;  /* Selection b iteration info has been initialized */
     htri_t ret_value = TRUE; /* Return value */
 
     FUNC_ENTER_NOAPI(FAIL)
@@ -1698,7 +1697,7 @@ H5S_select_shape_same(const H5S_t *space1, const H5S_t *space2)
                 space_b_dim--;
             } /* end while */
 
-            /* Since we are selecting the entire spaces, we must also verify that space_a 
+            /* Since we are selecting the entire space, we must also verify that space_a 
              * has size 1 in all dimensions that it does not share with space_b.
              */
             while(space_a_dim >= 0) {
@@ -1748,13 +1747,13 @@ H5S_select_shape_same(const H5S_t *space1, const H5S_t *space2)
         } /* end if */
         /* Iterate through all the blocks in the selection */
         else {
-            hsize_t start_a[H5O_LAYOUT_NDIMS]; /* Start point of selection block in dataspace a */
-            hsize_t start_b[H5O_LAYOUT_NDIMS]; /* Start point of selection block in dataspace b */
-            hsize_t end_a[H5O_LAYOUT_NDIMS];   /* End point of selection block in dataspace a */
-            hsize_t end_b[H5O_LAYOUT_NDIMS];   /* End point of selection block in dataspace b */
-            hsize_t off_a[H5O_LAYOUT_NDIMS];   /* Offset of selection a blocks */
-            hsize_t off_b[H5O_LAYOUT_NDIMS];   /* Offset of selection b blocks */
-            hbool_t first_block = TRUE;        /* Flag to indicate the first block */
+            hsize_t start_a[H5O_LAYOUT_NDIMS];  /* Start point of selection block in dataspace a */
+            hsize_t start_b[H5O_LAYOUT_NDIMS];  /* Start point of selection block in dataspace b */
+            hsize_t end_a[H5O_LAYOUT_NDIMS];    /* End point of selection block in dataspace a */
+            hsize_t end_b[H5O_LAYOUT_NDIMS];    /* End point of selection block in dataspace b */
+            hsize_t off_a[H5O_LAYOUT_NDIMS];    /* Offset of selection a blocks */
+            hsize_t off_b[H5O_LAYOUT_NDIMS];    /* Offset of selection b blocks */
+            hbool_t first_block = TRUE;         /* Flag to indicate the first block */
 
             /* Allocate the selection iterators */
             if(NULL == (iter_a = H5FL_MALLOC(H5S_sel_iter_t)))
@@ -1769,10 +1768,10 @@ H5S_select_shape_same(const H5S_t *space1, const H5S_t *space2)
              */
             if(H5S_select_iter_init(iter_a, space_a, (size_t)0) < 0)
                 HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINIT, FAIL, "unable to initialize selection iterator a")
-            iter_a_init = 1;
+            iter_a_init = TRUE;
             if(H5S_select_iter_init(iter_b, space_b, (size_t)0) < 0)
                 HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINIT, FAIL, "unable to initialize selection iterator b")
-            iter_b_init = 1;
+            iter_b_init = TRUE;
 
             /* Iterate over all the blocks in each selection */
             while(1) {
@@ -1901,7 +1900,7 @@ done:
     topologically identical to that in b (as verified by 
     H5S_select_shape_same().
 
-    This function exists, as some I/O code chokes of topologically 
+    This function exists, as some I/O code chokes on topologically 
     identical selections with different ranks.  At least to begin 
     with, we will deal with the issue by constructing projections
     of the memory dataspace with ranks equaling those of the file 
@@ -2151,10 +2150,9 @@ H5S_select_construct_projection(const H5S_t *base_space, H5S_t **new_space_ptr,
 
 done:
     /* Cleanup on error */
-    if(ret_value < 0) {
+    if(ret_value < 0)
         if(new_space && H5S_close(new_space) < 0)
             HDONE_ERROR(H5E_DATASPACE, H5E_CANTRELEASE, FAIL, "unable to release dataspace")
-    } /* end if */
 
     FUNC_LEAVE_NOAPI(ret_value)
 }   /* H5S_select_construct_projection() */
diff --git a/src/H5Z.c b/src/H5Z.c
index 0be0bbe..f601039 100644
--- a/src/H5Z.c
+++ b/src/H5Z.c
@@ -848,7 +848,7 @@ H5Z_prepare_prelude_callback_dcpl(hid_t dcpl_id, hid_t type_id, H5Z_prelude_type
                 H5S_t *space;           /* Dataspace describing chunk */
                 size_t u;               /* Local index variable */
 
-                /* Create a data space for a chunk & set the extent */
+                /* Create a dataspace for a chunk & set the extent */
                 for(u = 0; u < dcpl_layout.u.chunk.ndims; u++)
                     chunk_dims[u] = dcpl_layout.u.chunk.dim[u];
                 if(NULL == (space = H5S_create_simple(dcpl_layout.u.chunk.ndims, chunk_dims, NULL)))
diff --git a/src/H5Znbit.c b/src/H5Znbit.c
index 7a41d16..b041613 100644
--- a/src/H5Znbit.c
+++ b/src/H5Znbit.c
@@ -890,7 +890,7 @@ H5Z_set_local_nbit(hid_t dcpl_id, hid_t type_id, hid_t space_id)
 
     /* Get dataspace */
     if(NULL == (ds = (H5S_t *)H5I_object_verify(space_id, H5I_DATASPACE)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
 
     /* Get total number of elements in the chunk */
     if((npoints = H5S_GET_EXTENT_NPOINTS(ds)) < 0)
diff --git a/src/H5Zscaleoffset.c b/src/H5Zscaleoffset.c
index 1cca9b1..449847f 100644
--- a/src/H5Zscaleoffset.c
+++ b/src/H5Zscaleoffset.c
@@ -892,7 +892,7 @@ H5Z_set_local_scaleoffset(hid_t dcpl_id, hid_t type_id, hid_t space_id)
 
     /* Get dataspace */
     if(NULL == (ds = (H5S_t *)H5I_object_verify(space_id, H5I_DATASPACE)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
 
     /* Get total number of elements in the chunk */
     if((npoints = H5S_GET_EXTENT_NPOINTS(ds)) < 0)
diff --git a/src/H5Zszip.c b/src/H5Zszip.c
index 557e923..a8ce84b 100644
--- a/src/H5Zszip.c
+++ b/src/H5Zszip.c
@@ -190,7 +190,7 @@ H5Z_set_local_szip(hid_t dcpl_id, hid_t type_id, hid_t space_id)
 
     /* Get dataspace */
     if(NULL == (ds = (H5S_t *)H5I_object_verify(space_id, H5I_DATASPACE)))
-        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space")
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace")
 
     /* Get dimensions for dataspace */
     if((ndims = H5S_get_simple_extent_dims(ds, dims, NULL)) < 0)
diff --git a/src/H5trace.c b/src/H5trace.c
index 48c357a..c4e5473 100644
--- a/src/H5trace.c
+++ b/src/H5trace.c
@@ -1303,7 +1303,7 @@ H5_trace(const double *returning, const char *func, const char *type, ...)
 
                             case H5I_DATASPACE:
                                 fprintf(out, "%ld (dspace)", (long)obj);
-                                /* Save the rank of simple data spaces for arrays */
+                                /* Save the rank of simple dataspaces for arrays */
                                 /* This may generate recursive call to the library... -QAK */
                                 {
                                     H5S_t *space;