1 /* Copy piece of UTF-8/UTF-16/UTF-32 string.
2 Copyright (C) 1999, 2002, 2006, 2009-2014 Free Software Foundation, Inc.
3 Written by Bruno Haible <bruno@clisp.org>, 2002.
4
5 This program is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Lesser General Public License as published
7 by the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17
18 #include <string.h>
19
20 UNIT *
FUNC(UNIT * dest,const UNIT * src,size_t n)21 FUNC (UNIT *dest, const UNIT *src, size_t n)
22 {
23 #if 0
24 if (dest < src)
25 {
26 UNIT *destptr = dest;
27 const UNIT *srcptr = src;
28
29 for (; n > 0; n--)
30 *destptr++ = *srcptr++;
31 }
32 else if (dest > src)
33 {
34 UNIT *destptr = dest + n - 1;
35 const UNIT *srcptr = src + n - 1;
36
37 for (; n > 0; n--)
38 *destptr-- = *srcptr--;
39 }
40 #else
41 memmove ((char *) dest, (const char *) src, n * sizeof (UNIT));
42 #endif
43 return dest;
44 }
45