1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2010 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 28 NoN(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 38 void* 39 memccpy(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