140412Sbostic /* 262087Sbostic * Copyright (c) 1988, 1989, 1990, 1993 362087Sbostic * The Regents of the University of California. All rights reserved. 440411Sbostic * 540412Sbostic * This code is derived from software contributed to Berkeley by 640412Sbostic * Adam de Boor. 740411Sbostic * 842741Sbostic * %sccs.include.redist.c% 940411Sbostic */ 1040412Sbostic 1140411Sbostic #ifndef lint 12*69094Schristos static char sccsid[] = "@(#)lstLast.c 8.2 (Berkeley) 04/28/95"; 1340412Sbostic #endif /* not lint */ 1440411Sbostic 1540412Sbostic /*- 1640412Sbostic * LstLast.c -- 1740412Sbostic * Return the last element of a list 1840412Sbostic */ 1940412Sbostic 2040411Sbostic #include "lstInt.h" 2140411Sbostic 2240411Sbostic /*- 2340411Sbostic *----------------------------------------------------------------------- 2440411Sbostic * Lst_Last -- 2540411Sbostic * Return the last node on the list l. 2640411Sbostic * 2740411Sbostic * Results: 2840411Sbostic * The requested node or NILLNODE if the list is empty. 2940411Sbostic * 3040411Sbostic * Side Effects: 3140411Sbostic * None. 3240411Sbostic * 3340411Sbostic *----------------------------------------------------------------------- 3440411Sbostic */ 3540411Sbostic LstNode Lst_Last(l)3640411SbosticLst_Last (l) 3740411Sbostic Lst l; 3840411Sbostic { 3940411Sbostic if (!LstValid(l) || LstIsEmpty (l)) { 4040411Sbostic return (NILLNODE); 4140411Sbostic } else { 4240411Sbostic return ((LstNode)((List)l)->lastPtr); 4340411Sbostic } 4440411Sbostic } 4540411Sbostic 46