diff options
Diffstat (limited to 'usr/src/lib/libast/common/comp/memcmp.c')
| -rw-r--r-- | usr/src/lib/libast/common/comp/memcmp.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/usr/src/lib/libast/common/comp/memcmp.c b/usr/src/lib/libast/common/comp/memcmp.c new file mode 100644 index 0000000000..89c713422b --- /dev/null +++ b/usr/src/lib/libast/common/comp/memcmp.c @@ -0,0 +1,45 @@ +/*********************************************************************** +* * +* 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_memcmp + +NoN(memcmp) + +#else + +int +memcmp(const void* ab1, const void* ab2, size_t n) +{ + register const unsigned char* b1 = (const unsigned char*)ab1; + register const unsigned char* b2 = (const unsigned char*)ab2; + register const unsigned char* e = b1 + n; + + while (b1 < e) + if (*b1++ != *b2++) + return(*--b1 - *--b2); + return(0); +} + +#endif |