1 /*---------------------------------------------------------------------------*
2 * pendian.c *
3 * *
4 * Copyright 2007, 2008 Nuance Communciations, Inc. *
5 * *
6 * Licensed under the Apache License, Version 2.0 (the 'License'); *
7 * you may not use this file except in compliance with the License. *
8 * *
9 * You may obtain a copy of the License at *
10 * http://www.apache.org/licenses/LICENSE-2.0 *
11 * *
12 * Unless required by applicable law or agreed to in writing, software *
13 * distributed under the License is distributed on an 'AS IS' BASIS, *
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
15 * See the License for the specific language governing permissions and *
16 * limitations under the License. *
17 * *
18 *---------------------------------------------------------------------------*/
19
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23
24
25 #include "pendian.h"
26
swap_byte_order(void * buffer,size_t count,size_t itemSize)27 void swap_byte_order(void *buffer, size_t count, size_t itemSize)
28 {
29 char *data = (char *) buffer;
30 register char *p, *q, c;
31
32 /* Process every item */
33 while (count > 0)
34 {
35 p = data;
36 q = data + itemSize - 1;
37
38 while (p < q)
39 {
40 c = *p;
41 *p++ = *q;
42 *q-- = c;
43 }
44
45 /* Prepare for next pass */
46 data += itemSize;
47 count--;
48 }
49 }
50