1261212Ssjg/* $NetBSD: lstMember.c,v 1.14 2013/11/14 00:01:28 sjg Exp $ */ 2236769Sobrien 3236769Sobrien/* 4236769Sobrien * Copyright (c) 1988, 1989, 1990, 1993 5236769Sobrien * The Regents of the University of California. All rights reserved. 6236769Sobrien * 7236769Sobrien * This code is derived from software contributed to Berkeley by 8236769Sobrien * Adam de Boor. 9236769Sobrien * 10236769Sobrien * Redistribution and use in source and binary forms, with or without 11236769Sobrien * modification, are permitted provided that the following conditions 12236769Sobrien * are met: 13236769Sobrien * 1. Redistributions of source code must retain the above copyright 14236769Sobrien * notice, this list of conditions and the following disclaimer. 15236769Sobrien * 2. Redistributions in binary form must reproduce the above copyright 16236769Sobrien * notice, this list of conditions and the following disclaimer in the 17236769Sobrien * documentation and/or other materials provided with the distribution. 18236769Sobrien * 3. Neither the name of the University nor the names of its contributors 19236769Sobrien * may be used to endorse or promote products derived from this software 20236769Sobrien * without specific prior written permission. 21236769Sobrien * 22236769Sobrien * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23236769Sobrien * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24236769Sobrien * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25236769Sobrien * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26236769Sobrien * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27236769Sobrien * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28236769Sobrien * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29236769Sobrien * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30236769Sobrien * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31236769Sobrien * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32236769Sobrien * SUCH DAMAGE. 33236769Sobrien */ 34236769Sobrien 35236769Sobrien#ifndef MAKE_NATIVE 36261212Ssjgstatic char rcsid[] = "$NetBSD: lstMember.c,v 1.14 2013/11/14 00:01:28 sjg Exp $"; 37236769Sobrien#else 38236769Sobrien#include <sys/cdefs.h> 39236769Sobrien#ifndef lint 40236769Sobrien#if 0 41236769Sobrienstatic char sccsid[] = "@(#)lstMember.c 8.1 (Berkeley) 6/6/93"; 42236769Sobrien#else 43261212Ssjg__RCSID("$NetBSD: lstMember.c,v 1.14 2013/11/14 00:01:28 sjg Exp $"); 44236769Sobrien#endif 45236769Sobrien#endif /* not lint */ 46236769Sobrien#endif 47236769Sobrien 48236769Sobrien/*- 49236769Sobrien * lstMember.c -- 50236769Sobrien * See if a given datum is on a given list. 51236769Sobrien */ 52236769Sobrien 53236769Sobrien#include "lstInt.h" 54236769Sobrien 55236769SobrienLstNode 56236769SobrienLst_Member(Lst l, void *d) 57236769Sobrien{ 58236769Sobrien List list = l; 59236769Sobrien ListNode lNode; 60236769Sobrien 61258113Ssjg if (list == NULL) { 62258113Ssjg return NULL; 63258113Ssjg } 64236769Sobrien lNode = list->firstPtr; 65236769Sobrien if (lNode == NULL) { 66236769Sobrien return NULL; 67236769Sobrien } 68236769Sobrien 69236769Sobrien do { 70236769Sobrien if (lNode->datum == d) { 71236769Sobrien return lNode; 72236769Sobrien } 73236769Sobrien lNode = lNode->nextPtr; 74236769Sobrien } while (lNode != NULL && lNode != list->firstPtr); 75236769Sobrien 76236769Sobrien return NULL; 77236769Sobrien} 78