/* $Revision: 1.1.1.1 $ ** ** This file has been modified to get it to compile more easily ** on pre-4.4BSD systems. Rich $alz, June 1991. */ #define const /* NULL */ #define void char #define size_t int #define NULL 0 /*- * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Chris Torek. * * Redistribution and use in source and binary forms are permitted * provided that: (1) source distributions retain this entire copyright * notice and comment, and (2) distributions including binaries display * the following acknowledgement: ``This product includes software * developed by the University of California, Berkeley and its contributors'' * in the documentation or other materials provided with the distribution * and in all advertising materials mentioning features or use of this * software. Neither the name of the University nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ #if 0 #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "@(#)memchr.c 5.5 (Berkeley) 5/15/90"; #endif /* LIBC_SCCS and not lint */ #include #include #endif void * memchr(s, c, n) const void *s; register unsigned char c; register size_t n; { if (n != 0) { register const unsigned char *p = (unsigned char *)s; do { if (*p++ == c) return ((void *)(p - 1)); } while (--n != 0); } return (NULL); }