1/***********************************************************************
2*                                                                      *
3*               This software is part of the ast package               *
4*          Copyright (c) 1985-2011 AT&T Intellectual Property          *
5*                      and is licensed under the                       *
6*                  Common Public License, Version 1.0                  *
7*                    by AT&T Intellectual Property                     *
8*                                                                      *
9*                A copy of the License is available at                 *
10*            http://www.opensource.org/licenses/cpl1.0.txt             *
11*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12*                                                                      *
13*              Information and Software Systems Research               *
14*                            AT&T Research                             *
15*                           Florham Park NJ                            *
16*                                                                      *
17*                 Glenn Fowler <gsf@research.att.com>                  *
18*                  David Korn <dgk@research.att.com>                   *
19*                   Phong Vo <kpv@research.att.com>                    *
20*                                                                      *
21***********************************************************************/
22#pragma prototyped
23
24#include <ast.h>
25
26#if _lib_memccpy && !_UWIN
27
28NoN(memccpy)
29
30#else
31
32/*
33 * Copy s2 to s1, stopping if character c is copied. Copy no more than n bytes.
34 * Return a pointer to the byte after character c in the copy,
35 * or 0 if c is not found in the first n bytes.
36 */
37
38void*
39memccpy(void* as1, const void* as2, register int c, size_t n)
40{
41	register char*		s1 = (char*)as1;
42	register const char*	s2 = (char*)as2;
43	register const char*	ep = s2 + n;
44
45	while (s2 < ep)
46		if ((*s1++ = *s2++) == c)
47			return(s1);
48	return(0);
49}
50
51#endif
52