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