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_memcmp 27 28NoN(memcmp) 29 30#else 31 32int 33memcmp(const void* ab1, const void* ab2, size_t n) 34{ 35 register const unsigned char* b1 = (const unsigned char*)ab1; 36 register const unsigned char* b2 = (const unsigned char*)ab2; 37 register const unsigned char* e = b1 + n; 38 39 while (b1 < e) 40 if (*b1++ != *b2++) 41 return(*--b1 - *--b2); 42 return(0); 43} 44 45#endif 46