1 /* $OpenBSD: lstSucc.c,v 1.3 1996/11/30 21:09:22 millert Exp $ */ 2 /* $NetBSD: lstSucc.c,v 1.5 1996/11/06 17:59:52 christos Exp $ */ 3 4 /* 5 * Copyright (c) 1988, 1989, 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Adam de Boor. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)lstSucc.c 8.1 (Berkeley) 6/6/93"; 43 #else 44 static char rcsid[] = "$OpenBSD: lstSucc.c,v 1.3 1996/11/30 21:09:22 millert Exp $"; 45 #endif 46 #endif /* not lint */ 47 48 /*- 49 * LstSucc.c -- 50 * return the successor to a given node 51 */ 52 53 #include "lstInt.h" 54 55 /*- 56 *----------------------------------------------------------------------- 57 * Lst_Succ -- 58 * Return the sucessor to the given node on its list. 59 * 60 * Results: 61 * The successor of the node, if it exists (note that on a circular 62 * list, if the node is the only one in the list, it is its own 63 * successor). 64 * 65 * Side Effects: 66 * None. 67 * 68 *----------------------------------------------------------------------- 69 */ 70 LstNode 71 Lst_Succ (ln) 72 LstNode ln; 73 { 74 if (ln == NILLNODE) { 75 return (NILLNODE); 76 } else { 77 return ((LstNode) ((ListNode) ln)->nextPtr); 78 } 79 } 80 81