1 /*
2 * memmove function
3 *
4 * Copyright 1996 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #ifndef HAVE_MEMMOVE
25 void *memmove( void *dest, const void *source, size_t len )
26 {
27 register char *dst = dest;
28 register const char *src = source;
29
30 /* Use memcpy if not overlapping */
31 if ((dst + len <= src) || (src + len <= dst))
32 {
33 memcpy( dst, src, len );
34 }
35 /* Otherwise do it the hard way (FIXME: could do better than this) */
36 else if (dst < src)
37 {
38 while (len--) *dst++ = *src++;
39 }
40 else
41 {
42 dst += len - 1;
43 src += len - 1;
44 while (len--) *dst-- = *src--;
45 }
46 return dest;
47 }
48 #endif /* HAVE_MEMMOVE */
49
This page was automatically generated by the
LXR engine.
Visit the LXR main site for more
information.