[svn-r18660] Description:

	Tweak H5detect to be even more careful about its actions, to allow
gcc 4.5 to use '-O3'.  Also, minor code cleanups in H5Tfloat.c

Tested on:
	FreeBSD/64 6.3 (liberty) w/gcc 4.5 & production mode
	(h5committest not necessary/appropriate)

2 files changed, 105 insertions, 122 deletions

diff --git a/src/H5Tfloat.c b/src/H5Tfloat.c
index 73ccf30..88d13fd 100644
--- a/src/H5Tfloat.c
+++ b/src/H5Tfloat.c
@@ -70,40 +70,41 @@ H5T_init_float_interface(void)
  * Programmer:	Robb Matzke
  *		Wednesday, January  7, 1998
  *
- * Modifications:
- *	Robb Matzke, 22 Dec 1998
- *	Also works with derived datatypes.
  *-------------------------------------------------------------------------
  */
 herr_t
-H5Tget_fields(hid_t type_id, size_t *spos/*out*/,
-	      size_t *epos/*out*/, size_t *esize/*out*/,
-	      size_t *mpos/*out*/, size_t *msize/*out*/)
+H5Tget_fields(hid_t type_id, size_t *spos/*out*/, size_t *epos/*out*/,
+size_t *esize/*out*/, size_t *mpos/*out*/, size_t *msize/*out*/)
 {
-    H5T_t	*dt = NULL;
-    herr_t      ret_value=SUCCEED;       /* Return value */
+    H5T_t	*dt;                    /* Datatype */
+    herr_t      ret_value = SUCCEED;    /* Return value */
 
     FUNC_ENTER_API(H5Tget_fields, FAIL)
     H5TRACE6("e", "ixxxxx", type_id, spos, epos, esize, mpos, msize);
 
     /* Check args */
-    if (NULL == (dt = H5I_object_verify(type_id,H5I_DATATYPE)))
+    if(NULL == (dt = (H5T_t *)H5I_object_verify(type_id, H5I_DATATYPE)))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a datatype")
-    while (dt->shared->parent)
+    while(dt->shared->parent)
         dt = dt->shared->parent; /*defer to parent*/
-    if (H5T_FLOAT != dt->shared->type)
-        HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "operation not defined for datatype class")
+    if(H5T_FLOAT != dt->shared->type)
+        HGOTO_ERROR(H5E_DATATYPE, H5E_BADTYPE, FAIL, "operation not defined for datatype class")
 
     /* Get values */
-    if (spos) *spos = dt->shared->u.atomic.u.f.sign;
-    if (epos) *epos = dt->shared->u.atomic.u.f.epos;
-    if (esize) *esize = dt->shared->u.atomic.u.f.esize;
-    if (mpos) *mpos = dt->shared->u.atomic.u.f.mpos;
-    if (msize) *msize = dt->shared->u.atomic.u.f.msize;
+    if(spos)
+        *spos = dt->shared->u.atomic.u.f.sign;
+    if(epos)
+        *epos = dt->shared->u.atomic.u.f.epos;
+    if(esize)
+        *esize = dt->shared->u.atomic.u.f.esize;
+    if(mpos)
+        *mpos = dt->shared->u.atomic.u.f.mpos;
+    if(msize)
+        *msize = dt->shared->u.atomic.u.f.msize;
 
 done:
     FUNC_LEAVE_API(ret_value)
-}
+} /* end H5Tget_fields() */
 
 
 /*-------------------------------------------------------------------------
@@ -122,45 +123,40 @@ done:
  * Programmer:	Robb Matzke
  *		Wednesday, January  7, 1998
  *
- * Modifications:
- *	Robb Matzke, 22 Dec 1998
- *	Also works for derived datatypes.
- *
  *-------------------------------------------------------------------------
  */
 herr_t
 H5Tset_fields(hid_t type_id, size_t spos, size_t epos, size_t esize,
-	      size_t mpos, size_t msize)
+    size_t mpos, size_t msize)
 {
-    H5T_t	*dt = NULL;
-    herr_t      ret_value=SUCCEED;       /* Return value */
+    H5T_t	*dt;                    /* Datatype */
+    herr_t      ret_value = SUCCEED;    /* Return value */
 
     FUNC_ENTER_API(H5Tset_fields, FAIL)
     H5TRACE6("e", "izzzzz", type_id, spos, epos, esize, mpos, msize);
 
     /* Check args */
-    if (NULL == (dt = H5I_object_verify(type_id,H5I_DATATYPE)))
+    if(NULL == (dt = (H5T_t *)H5I_object_verify(type_id, H5I_DATATYPE)))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a datatype")
-    if (H5T_STATE_TRANSIENT!=dt->shared->state)
-	HGOTO_ERROR(H5E_ARGS, H5E_CANTINIT, FAIL, "datatype is read-only")
-    while (dt->shared->parent)
+    if(H5T_STATE_TRANSIENT != dt->shared->state)
+	HGOTO_ERROR(H5E_ARGS, H5E_CANTSET, FAIL, "datatype is read-only")
+    while(dt->shared->parent)
         dt = dt->shared->parent; /*defer to parent*/
-    if (H5T_FLOAT != dt->shared->type)
-	HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "operation not defined for datatype class")
-    if (epos + esize > dt->shared->u.atomic.prec)
+    if(H5T_FLOAT != dt->shared->type)
+	HGOTO_ERROR(H5E_DATATYPE, H5E_BADTYPE, FAIL, "operation not defined for datatype class")
+    if(epos + esize > dt->shared->u.atomic.prec)
 	HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "exponent bit field size/location is invalid")
-    if (mpos + msize > dt->shared->u.atomic.prec)
+    if(mpos + msize > dt->shared->u.atomic.prec)
 	HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "mantissa bit field size/location is invalid")
-    if (spos >= dt->shared->u.atomic.prec)
+    if(spos >= dt->shared->u.atomic.prec)
 	HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "sign location is not valid")
 
     /* Check for overlap */
-    if (spos >= epos && spos < epos + esize)
+    if(spos >= epos && spos < epos + esize)
 	HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "sign bit appears within exponent field")
-    if (spos >= mpos && spos < mpos + msize)
+    if(spos >= mpos && spos < mpos + msize)
 	HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "sign bit appears within mantissa field")
-    if ((mpos < epos && mpos + msize > epos) ||
-            (epos < mpos && epos + esize > mpos))
+    if((mpos < epos && mpos + msize > epos) || (epos < mpos && epos + esize > mpos))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "exponent and mantissa fields overlap")
 
     /* Commit */
@@ -172,7 +168,7 @@ H5Tset_fields(hid_t type_id, size_t spos, size_t epos, size_t esize,
 
 done:
     FUNC_LEAVE_API(ret_value)
-}
+} /* end H5Tset_fields() */
 
 
 /*-------------------------------------------------------------------------
@@ -187,34 +183,31 @@ done:
  * Programmer:	Robb Matzke
  *		Wednesday, January  7, 1998
  *
- * Modifications:
- *	Robb Matzke, 22 Dec 1998
- *	Also works with derived datatypes.
  *-------------------------------------------------------------------------
  */
 size_t
 H5Tget_ebias(hid_t type_id)
 {
-    H5T_t	*dt = NULL;
-    size_t	ret_value;
+    H5T_t	*dt;                    /* Datatype */
+    size_t	ret_value;              /* Return value */
 
     FUNC_ENTER_API(H5Tget_ebias, 0)
     H5TRACE1("z", "i", type_id);
 
     /* Check args */
-    if (NULL == (dt = H5I_object_verify(type_id,H5I_DATATYPE)))
+    if(NULL == (dt = (H5T_t *)H5I_object_verify(type_id, H5I_DATATYPE)))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, 0, "not a datatype")
-    while (dt->shared->parent)
+    while(dt->shared->parent)
         dt = dt->shared->parent; /*defer to parent*/
-    if (H5T_FLOAT != dt->shared->type)
-	HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, 0, "operation not defined for datatype class")
+    if(H5T_FLOAT != dt->shared->type)
+	HGOTO_ERROR(H5E_DATATYPE, H5E_BADTYPE, 0, "operation not defined for datatype class")
 
     /* bias */
-    H5_ASSIGN_OVERFLOW(ret_value,dt->shared->u.atomic.u.f.ebias,uint64_t,size_t);
+    H5_ASSIGN_OVERFLOW(ret_value, dt->shared->u.atomic.u.f.ebias, uint64_t, size_t);
 
 done:
     FUNC_LEAVE_API(ret_value)
-}
+} /* end H5Tget_ebias() */
 
 
 /*-------------------------------------------------------------------------
@@ -236,28 +229,28 @@ done:
 herr_t
 H5Tset_ebias(hid_t type_id, size_t ebias)
 {
-    H5T_t	*dt = NULL;
-    herr_t      ret_value=SUCCEED;       /* Return value */
+    H5T_t	*dt;                    /* Datatype */
+    herr_t      ret_value = SUCCEED;    /* Return value */
 
     FUNC_ENTER_API(H5Tset_ebias, FAIL)
     H5TRACE2("e", "iz", type_id, ebias);
 
     /* Check args */
-    if (NULL == (dt = H5I_object_verify(type_id,H5I_DATATYPE)))
+    if(NULL == (dt = (H5T_t *)H5I_object_verify(type_id, H5I_DATATYPE)))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a datatype")
-    if (H5T_STATE_TRANSIENT!=dt->shared->state)
-	HGOTO_ERROR(H5E_ARGS, H5E_CANTINIT, FAIL, "datatype is read-only")
-    while (dt->shared->parent)
+    if(H5T_STATE_TRANSIENT != dt->shared->state)
+	HGOTO_ERROR(H5E_ARGS, H5E_CANTSET, FAIL, "datatype is read-only")
+    while(dt->shared->parent)
         dt = dt->shared->parent; /*defer to parent*/
-    if (H5T_FLOAT != dt->shared->type)
-	HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "operation not defined for datatype class")
+    if(H5T_FLOAT != dt->shared->type)
+	HGOTO_ERROR(H5E_DATATYPE, H5E_BADTYPE, FAIL, "operation not defined for datatype class")
 
     /* Commit */
     dt->shared->u.atomic.u.f.ebias = ebias;
 
 done:
     FUNC_LEAVE_API(ret_value)
-}
+} /* end H5Tset_ebias() */
 
 
 /*-------------------------------------------------------------------------
@@ -273,35 +266,31 @@ done:
  * Programmer:	Robb Matzke
  *		Wednesday, January  7, 1998
  *
- * Modifications:
- * 	Robb Matzke, 22 Dec 1998
- *	Also works with derived datatypes.
- *
  *-------------------------------------------------------------------------
  */
 H5T_norm_t
 H5Tget_norm(hid_t type_id)
 {
-    H5T_t	*dt = NULL;
-    H5T_norm_t	ret_value;
+    H5T_t	*dt;            /* Datatype */
+    H5T_norm_t	ret_value;      /* Return value */
 
     FUNC_ENTER_API(H5Tget_norm, H5T_NORM_ERROR)
     H5TRACE1("Tn", "i", type_id);
 
     /* Check args */
-    if (NULL == (dt = H5I_object_verify(type_id,H5I_DATATYPE)))
+    if(NULL == (dt = (H5T_t *)H5I_object_verify(type_id, H5I_DATATYPE)))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5T_NORM_ERROR, "not a datatype")
-    while (dt->shared->parent)
+    while(dt->shared->parent)
         dt = dt->shared->parent; /*defer to parent*/
-    if (H5T_FLOAT != dt->shared->type)
-	HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, H5T_NORM_ERROR, "operation not defined for datatype class")
+    if(H5T_FLOAT != dt->shared->type)
+	HGOTO_ERROR(H5E_DATATYPE, H5E_BADTYPE, H5T_NORM_ERROR, "operation not defined for datatype class")
 
     /* norm */
     ret_value = dt->shared->u.atomic.u.f.norm;
 
 done:
     FUNC_LEAVE_API(ret_value)
-}
+} /* end H5Tget_norm() */
 
 
 /*-------------------------------------------------------------------------
@@ -315,39 +304,35 @@ done:
  * Programmer:	Robb Matzke
  *		Wednesday, January  7, 1998
  *
- * Modifications:
- * 	Robb Matzke, 22 Dec 1998
- *	Also works for derived datatypes.
- *
  *-------------------------------------------------------------------------
  */
 herr_t
 H5Tset_norm(hid_t type_id, H5T_norm_t norm)
 {
-    H5T_t	*dt = NULL;
-    herr_t      ret_value=SUCCEED;       /* Return value */
+    H5T_t	*dt;                    /* Datatype */
+    herr_t      ret_value = SUCCEED;    /* Return value */
 
     FUNC_ENTER_API(H5Tset_norm, FAIL)
     H5TRACE2("e", "iTn", type_id, norm);
 
     /* Check args */
-    if (NULL == (dt = H5I_object_verify(type_id,H5I_DATATYPE)))
+    if(NULL == (dt = (H5T_t *)H5I_object_verify(type_id, H5I_DATATYPE)))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a datatype")
-    if (H5T_STATE_TRANSIENT!=dt->shared->state)
-	HGOTO_ERROR(H5E_ARGS, H5E_CANTINIT, FAIL, "datatype is read-only")
-    if (norm < H5T_NORM_IMPLIED || norm > H5T_NORM_NONE)
+    if(H5T_STATE_TRANSIENT != dt->shared->state)
+	HGOTO_ERROR(H5E_ARGS, H5E_CANTSET, FAIL, "datatype is read-only")
+    if(norm < H5T_NORM_IMPLIED || norm > H5T_NORM_NONE)
 	HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "illegal normalization")
-    while (dt->shared->parent)
+    while(dt->shared->parent)
         dt = dt->shared->parent; /*defer to parent*/
-    if (H5T_FLOAT != dt->shared->type)
-	HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "operation not defined for datatype class")
+    if(H5T_FLOAT != dt->shared->type)
+	HGOTO_ERROR(H5E_DATATYPE, H5E_BADTYPE, FAIL, "operation not defined for datatype class")
 
     /* Commit */
     dt->shared->u.atomic.u.f.norm = norm;
 
 done:
     FUNC_LEAVE_API(ret_value)
-}
+} /* end H5Tset_norm() */
 
 
 /*-------------------------------------------------------------------------
@@ -365,35 +350,31 @@ done:
  * Programmer:	Robb Matzke
  *		Friday, January	 9, 1998
  *
- * Modifications:
- * 	Robb Matzke, 22 Dec 1998
- *	Also works for derived datatypes.
- *
  *-------------------------------------------------------------------------
  */
 H5T_pad_t
 H5Tget_inpad(hid_t type_id)
 {
-    H5T_t	*dt = NULL;
-    H5T_pad_t	ret_value;
+    H5T_t	*dt;            /* Datatype */
+    H5T_pad_t	ret_value;      /* Return value */
 
     FUNC_ENTER_API(H5Tget_inpad, H5T_PAD_ERROR)
     H5TRACE1("Tp", "i", type_id);
 
     /* Check args */
-    if (NULL == (dt = H5I_object_verify(type_id,H5I_DATATYPE)))
+    if(NULL == (dt = (H5T_t *)H5I_object_verify(type_id, H5I_DATATYPE)))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5T_PAD_ERROR, "not a datatype")
-    while (dt->shared->parent)
+    while(dt->shared->parent)
         dt = dt->shared->parent; /*defer to parent*/
-    if (H5T_FLOAT != dt->shared->type)
-	HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, H5T_PAD_ERROR, "operation not defined for datatype class")
+    if(H5T_FLOAT != dt->shared->type)
+	HGOTO_ERROR(H5E_DATATYPE, H5E_BADTYPE, H5T_PAD_ERROR, "operation not defined for datatype class")
 
     /* pad */
     ret_value = dt->shared->u.atomic.u.f.pad;
 
 done:
     FUNC_LEAVE_API(ret_value)
-}
+} /* end H5Tget_inpad() */
 
 
 /*-------------------------------------------------------------------------
@@ -409,37 +390,33 @@ done:
  * Programmer:	Robb Matzke
  *		Friday, January	 9, 1998
  *
- * Modifications:
- * 	Robb Matzke, 22 Dec 1998
- *	Also works for derived datatypes.
- *
  *-------------------------------------------------------------------------
  */
 herr_t
 H5Tset_inpad(hid_t type_id, H5T_pad_t pad)
 {
-    H5T_t	*dt = NULL;
-    herr_t      ret_value=SUCCEED;       /* Return value */
+    H5T_t	*dt;                    /* Datatype */
+    herr_t      ret_value = SUCCEED;    /* Return value */
 
     FUNC_ENTER_API(H5Tset_inpad, FAIL)
     H5TRACE2("e", "iTp", type_id, pad);
 
     /* Check args */
-    if (NULL == (dt = H5I_object_verify(type_id,H5I_DATATYPE)))
+    if(NULL == (dt = (H5T_t *)H5I_object_verify(type_id, H5I_DATATYPE)))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a datatype")
-    if (H5T_STATE_TRANSIENT!=dt->shared->state)
-	HGOTO_ERROR(H5E_ARGS, H5E_CANTINIT, FAIL, "datatype is read-only")
-    if (pad < H5T_PAD_ZERO || pad >= H5T_NPAD)
+    if(H5T_STATE_TRANSIENT != dt->shared->state)
+	HGOTO_ERROR(H5E_ARGS, H5E_CANTSET, FAIL, "datatype is read-only")
+    if(pad < H5T_PAD_ZERO || pad >= H5T_NPAD)
 	HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "illegal internal pad type")
-    while (dt->shared->parent)
+    while(dt->shared->parent)
         dt = dt->shared->parent; /*defer to parent*/
-    if (H5T_FLOAT != dt->shared->type)
-	HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "operation not defined for datatype class")
+    if(H5T_FLOAT != dt->shared->type)
+	HGOTO_ERROR(H5E_DATATYPE, H5E_BADTYPE, FAIL, "operation not defined for datatype class")
 
     /* Commit */
     dt->shared->u.atomic.u.f.pad = pad;
 
 done:
     FUNC_LEAVE_API(ret_value)
-}
+} /* end H5Tset_inpad() */
 
diff --git a/src/H5detect.c b/src/H5detect.c
index 1cfce96..5bae2bb 100644
--- a/src/H5detect.c
+++ b/src/H5detect.c
@@ -288,33 +288,39 @@ precision (detected_t *d)
  *-------------------------------------------------------------------------
  */
 #define DETECT_F(TYPE,VAR,INFO) {					      \
-   volatile TYPE _v1, _v2, _v3;							      \
-   int _i, _j, _first=(-1), _last=(-1);					      \
+   volatile TYPE _v1, _v2, _v3;						      \
+   unsigned char _buf1[sizeof(TYPE)], _buf3[sizeof(TYPE)];		      \
+   int _i, _j, _first = (-1), _last = (-1);				      \
    char *_mesg;								      \
 									      \
-   memset (&INFO, 0, sizeof(INFO));					      \
+   memset(&INFO, 0, sizeof(INFO));					      \
    INFO.varname = #VAR;							      \
    INFO.size = sizeof(TYPE);						      \
 									      \
    /* Completely initialize temporary variables, in case the bits used in */  \
    /* the type take less space than the number of bits used to store the type */  \
-   memset(&_v3,0,sizeof(TYPE));                                               \
-   memset(&_v2,0,sizeof(TYPE));                                               \
-   memset(&_v1,0,sizeof(TYPE));                                               \
+   memset(&_v3, 0, sizeof(TYPE));                                             \
+   memset(&_v2, 0, sizeof(TYPE));                                             \
+   memset(&_v1, 0, sizeof(TYPE));                                             \
 									      \
    /* Byte Order */							      \
-   for (_i=0,_v1=0.0,_v2=1.0; _i<(signed)sizeof(TYPE); _i++) {		      \
-      _v3 = _v1; _v1 += _v2; _v2 /= 256.0;				      \
-      _j=byte_cmp(sizeof(TYPE), &_v3, &_v1);				      \
-      if(_j>=0) {							      \
-	 if (0==_i || INFO.perm[_i-1]!=_j) {				      \
+   for(_i = 0, _v1 = 0.0, _v2 = 1.0; _i < (int)sizeof(TYPE); _i++) {	      \
+      _v3 = _v1;							      \
+      _v1 += _v2;							      \
+      _v2 /= 256.0;							      \
+      memcpy(_buf1, (const void *)&_v1, sizeof(TYPE));			      \
+      memcpy(_buf3, (const void *)&_v3, sizeof(TYPE));			      \
+      _j = byte_cmp(sizeof(TYPE), &_buf3, &_buf1);			      \
+      if(_j >= 0) {							      \
+	 if(0 == _i || INFO.perm[_i - 1] != _j) {			      \
 	    INFO.perm[_i] = _j;						      \
 	    _last = _i;							      \
-	    if (_first<0) _first = _i;					      \
+	    if(_first < 0)						      \
+                _first = _i;						      \
 	 }								      \
       }									      \
    }									      \
-   fix_order (sizeof(TYPE), _first, _last, INFO.perm, (const char**)&_mesg);  \
+   fix_order(sizeof(TYPE), _first, _last, INFO.perm, (const char**)&_mesg);   \
                                                                               \
    if(!strcmp(_mesg, "VAX"))                                                  \
       INFO.is_vax = TRUE;                                                     \