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Diffstat (limited to 'usr/src/lib/libast/common/comp/memccpy.c')
| -rw-r--r-- | usr/src/lib/libast/common/comp/memccpy.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/usr/src/lib/libast/common/comp/memccpy.c b/usr/src/lib/libast/common/comp/memccpy.c new file mode 100644 index 0000000000..17967374b0 --- /dev/null +++ b/usr/src/lib/libast/common/comp/memccpy.c @@ -0,0 +1,51 @@ +/*********************************************************************** +* * +* This software is part of the ast package * +* Copyright (c) 1985-2007 AT&T Knowledge Ventures * +* and is licensed under the * +* Common Public License, Version 1.0 * +* by AT&T Knowledge Ventures * +* * +* A copy of the License is available at * +* http://www.opensource.org/licenses/cpl1.0.txt * +* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * +* * +* Information and Software Systems Research * +* AT&T Research * +* Florham Park NJ * +* * +* Glenn Fowler <gsf@research.att.com> * +* David Korn <dgk@research.att.com> * +* Phong Vo <kpv@research.att.com> * +* * +***********************************************************************/ +#pragma prototyped + +#include <ast.h> + +#if _lib_memccpy && !_UWIN + +NoN(memccpy) + +#else + +/* + * Copy s2 to s1, stopping if character c is copied. Copy no more than n bytes. + * Return a pointer to the byte after character c in the copy, + * or 0 if c is not found in the first n bytes. + */ + +void* +memccpy(void* as1, const void* as2, register int c, size_t n) +{ + register char* s1 = (char*)as1; + register const char* s2 = (char*)as2; + register const char* ep = s2 + n; + + while (s2 < ep) + if ((*s1++ = *s2++) == c) + return(s1); + return(0); +} + +#endif |