strrchr.c revision 53492
11541Srgrimes/* 21541Srgrimes * Copyright (c) 1988, 1993 31541Srgrimes * The Regents of the University of California. All rights reserved. 41541Srgrimes * 51541Srgrimes * Redistribution and use in source and binary forms, with or without 61541Srgrimes * modification, are permitted provided that the following conditions 71541Srgrimes * are met: 81541Srgrimes * 1. Redistributions of source code must retain the above copyright 91541Srgrimes * notice, this list of conditions and the following disclaimer. 101541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111541Srgrimes * notice, this list of conditions and the following disclaimer in the 121541Srgrimes * documentation and/or other materials provided with the distribution. 131541Srgrimes * 3. All advertising materials mentioning features or use of this software 141541Srgrimes * must display the following acknowledgement: 151541Srgrimes * This product includes software developed by the University of 161541Srgrimes * California, Berkeley and its contributors. 171541Srgrimes * 4. Neither the name of the University nor the names of its contributors 181541Srgrimes * may be used to endorse or promote products derived from this software 191541Srgrimes * without specific prior written permission. 201541Srgrimes * 211541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241541Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291541Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301541Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311541Srgrimes * SUCH DAMAGE. 321817Sdg * 3350477Speter * $FreeBSD: head/sys/libkern/rindex.c 53492 1999-11-21 04:26:48Z peter $ 341541Srgrimes */ 351541Srgrimes 3653492Speter#include <sys/param.h> 3753492Speter#include <sys/libkern.h> 381541Srgrimes 391541Srgrimeschar * 401541Srgrimesrindex(p, ch) 4153492Speter char *p; 4253492Speter int ch; 431541Srgrimes{ 4453492Speter char *save; 451541Srgrimes 461541Srgrimes for (save = NULL;; ++p) { 471541Srgrimes if (*p == ch) 4853492Speter save = p; 491541Srgrimes if (!*p) 501541Srgrimes return(save); 511541Srgrimes } 521541Srgrimes /* NOTREACHED */ 531541Srgrimes} 5453492Speter 5553492Speterconst char * 5653492Speterc_rindex(p, ch) 5753492Speter const char *p; 5853492Speter int ch; 5953492Speter{ 6053492Speter const char *save; 6153492Speter 6253492Speter for (save = NULL;; ++p) { 6353492Speter if (*p == ch) 6453492Speter save = p; 6553492Speter if (!*p) 6653492Speter return(save); 6753492Speter } 6853492Speter /* NOTREACHED */ 6953492Speter} 70