From ad6408e3849dae8bbb1fb25597ccd2f44af7cb36 Mon Sep 17 00:00:00 2001
From: Quincey Koziol <koziol@hdfgroup.org>
Date: Thu, 5 Feb 2004 11:10:40 -0500
Subject: [svn-r8154] Purpose:     Code cleanup

Description:
    Minor tweaks, cleanups & optimizations to new bit operation routines.

Platforms tested:
    FreeBSD 4.9 (sleipnir)
    too minor to require h5committest
---
 src/H5Tbit.c  | 35 +++++++++++++++++++++--------------
 src/H5Tconv.c |  7 +++----
 src/H5Tpkg.h  |  2 +-
 3 files changed, 25 insertions(+), 19 deletions(-)

diff --git a/src/H5Tbit.c b/src/H5Tbit.c
index d063137..ef62f31 100644
--- a/src/H5Tbit.c
+++ b/src/H5Tbit.c
@@ -27,6 +27,7 @@
 #include "H5private.h"		/*generic functions			  */
 #include "H5Eprivate.h"		/*error handling			  */
 #include "H5Iprivate.h"		/*ID functions		   		  */
+#include "H5MMprivate.h"	/* Memory management			*/
 #include "H5Tpkg.h"		/*data-type functions			  */
 
 /* Interface initialization */
@@ -177,36 +178,38 @@ H5T_bit_copy (uint8_t *dst, size_t dst_offset, const uint8_t *src,
  *-------------------------------------------------------------------------
  */
 void
-H5T_bit_shift (uint8_t *buf, hssize_t shift_dist, size_t buf_size)
+H5T_bit_shift (uint8_t *buf, ssize_t shift_dist, size_t buf_size)
 {
     uint8_t *tmp_buf;
     size_t  buf_size_bit = 8*buf_size;
-    size_t  i;
 
-    FUNC_ENTER_NOAPI_NOINIT(H5T_bit_shift);
+    FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5T_bit_shift);
+
+    /* Sanity check */
+    assert(buf);
+    assert(buf_size);
 
     if(!shift_dist)
         goto done;    
-    if(abs(shift_dist) >= buf_size_bit) {
-        H5T_bit_set (buf, 0, buf_size_bit, FALSE);
+    if(ABS(shift_dist) >= buf_size_bit) {
+        HDmemset(buf,0,buf_size);
         goto done;
     }
     
-    tmp_buf = (uint8_t*)HDcalloc(buf_size, 1);
+    tmp_buf = (uint8_t*)H5MM_calloc(buf_size);
+    assert(tmp_buf);
 
     /* Shift vector by making copies */    
     if(shift_dist > 0)  /* left shift */ 
-        H5T_bit_copy (tmp_buf, shift_dist, buf, 0, buf_size_bit-shift_dist);
-    else { /* right shift */
-        shift_dist = -shift_dist;
-        H5T_bit_copy(tmp_buf, 0, buf, shift_dist, buf_size_bit-shift_dist);
-    }
+        H5T_bit_copy (tmp_buf, (size_t)shift_dist, buf, 0, (size_t)(buf_size_bit-shift_dist));
+    else  /* right shift */
+        H5T_bit_copy(tmp_buf, 0, buf, (size_t)-shift_dist, (size_t)(buf_size_bit+shift_dist));
 
     /* Copy back the vector */
-    for(i=0; i<buf_size; i++)
-        buf[i] = tmp_buf[i];
+    HDmemcpy(buf,tmp_buf,buf_size);
 
-    HDfree(tmp_buf);
+    /* Free temporary buffer */
+    H5MM_xfree(tmp_buf);
 
 done:
     FUNC_LEAVE_NOAPI_VOID
@@ -558,6 +561,8 @@ H5T_bit_dec(uint8_t *buf, size_t start, size_t size)
     size_t	idx;
 
     assert(buf);
+    assert(size);
+    assert(start==0);
 
     for(idx=0; idx < size/8; idx++) {
         if(buf[idx] != 0x00) {
@@ -591,6 +596,8 @@ H5T_bit_neg(uint8_t *buf, size_t start, size_t size)
     size_t i;
 
     assert(buf);
+    assert(size);
+    assert(start==0);
 
     for(i=0; i<size/8; i++)
         buf[i] = ~(buf[i]);
diff --git a/src/H5Tconv.c b/src/H5Tconv.c
index cd7a301..280f82c 100644
--- a/src/H5Tconv.c
+++ b/src/H5Tconv.c
@@ -2935,7 +2935,6 @@ H5T_conv_i_i (hid_t src_id, hid_t dst_id, H5T_cdata_t *cdata, hsize_t nelmts,
                         }
                     } else if (src->u.atomic.prec<dst->u.atomic.prec) {
                         H5T_bit_copy (d, dst->u.atomic.offset, s, src->u.atomic.offset, src->u.atomic.prec);
-                        /* Why is it set to TRUE? */
                         H5T_bit_set (d, dst->u.atomic.offset+src->u.atomic.prec, dst->u.atomic.prec-src->u.atomic.prec, TRUE);
                     } else {
                         H5T_bit_copy (d, dst->u.atomic.offset, s, src->u.atomic.offset, dst->u.atomic.prec);
@@ -8468,8 +8467,8 @@ H5T_conv_f_i (hid_t src_id, hid_t dst_id, H5T_cdata_t *cdata, hsize_t nelmts,
             /* Allocate enough space for the buffer holding temporary 
              * converted value
              */ 
-            buf_size = (int)pow(2, src.u.f.esize) / 8 + 1;          
-            int_buf = (uint8_t*)HDcalloc(buf_size, 1);
+            buf_size = (int)HDpow((double)2.0, (double)src.u.f.esize) / 8 + 1;          
+            int_buf = (uint8_t*)H5MM_calloc(buf_size);
 
             /* The conversion loop */
             for (elmtno=0; elmtno<nelmts; elmtno++) {
@@ -8734,7 +8733,7 @@ H5T_conv_f_i (hid_t src_id, hid_t dst_id, H5T_cdata_t *cdata, hsize_t nelmts,
                 HDmemset(int_buf, 0, buf_size);
             }
            
-            HDfree(int_buf);
+            H5MM_xfree(int_buf);
 
             break;
                 
diff --git a/src/H5Tpkg.h b/src/H5Tpkg.h
index e068c25..27fa5da 100644
--- a/src/H5Tpkg.h
+++ b/src/H5Tpkg.h
@@ -1066,7 +1066,7 @@ H5_DLL herr_t H5T_conv_i32le_f64le(hid_t src_id, hid_t dst_id,
 /* Bit twiddling functions */
 H5_DLL void H5T_bit_copy(uint8_t *dst, size_t dst_offset, const uint8_t *src,
 			  size_t src_offset, size_t size);
-H5_DLL void H5T_bit_shift(uint8_t *buf, hssize_t shift_dist, size_t buf_size);
+H5_DLL void H5T_bit_shift(uint8_t *buf, ssize_t shift_dist, size_t buf_size);
 H5_DLL void H5T_bit_set(uint8_t *buf, size_t offset, size_t size,
 			 hbool_t value);
 H5_DLL hsize_t H5T_bit_get_d(uint8_t *buf, size_t offset, size_t size);
-- 
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