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Annotation of 43BSDReno/usr.bin/make/lst.lib/lstMember.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * This code is derived from software contributed to Berkeley by
        !             6:  * Adam de Boor.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms are permitted
        !             9:  * provided that: (1) source distributions retain this entire copyright
        !            10:  * notice and comment, and (2) distributions including binaries display
        !            11:  * the following acknowledgement:  ``This product includes software
        !            12:  * developed by the University of California, Berkeley and its contributors''
        !            13:  * in the documentation or other materials provided with the distribution
        !            14:  * and in all advertising materials mentioning features or use of this
        !            15:  * software. Neither the name of the University nor the names of its
        !            16:  * contributors may be used to endorse or promote products derived
        !            17:  * from this software without specific prior written permission.
        !            18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            19:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            20:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            21:  */
        !            22: 
        !            23: #ifndef lint
        !            24: static char sccsid[] = "@(#)lstMember.c        5.3 (Berkeley) 6/1/90";
        !            25: #endif /* not lint */
        !            26: 
        !            27: /*-
        !            28:  * lstMember.c --
        !            29:  *     See if a given datum is on a given list.
        !            30:  */
        !            31: 
        !            32: #include    "lstInt.h"
        !            33: 
        !            34: LstNode
        !            35: Lst_Member (l, d)
        !            36:     Lst                        l;
        !            37:     ClientData         d;
        !            38: {
        !            39:     List               list = (List) l;
        !            40:     register ListNode  lNode;
        !            41: 
        !            42:     lNode = list->firstPtr;
        !            43:     if (lNode == NilListNode) {
        !            44:        return NILLNODE;
        !            45:     }
        !            46:     
        !            47:     do {
        !            48:        if (lNode->datum == d) {
        !            49:            return (LstNode)lNode;
        !            50:        }
        !            51:        lNode = lNode->nextPtr;
        !            52:     } while (lNode != NilListNode && lNode != list->firstPtr);
        !            53: 
        !            54:     return NILLNODE;
        !            55: }

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