diff options
Diffstat (limited to 'lst.lib/lstMember.c')
| -rw-r--r-- | lst.lib/lstMember.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/lst.lib/lstMember.c b/lst.lib/lstMember.c new file mode 100644 index 0000000..0ff2ed1 --- /dev/null +++ b/lst.lib/lstMember.c @@ -0,0 +1,74 @@ +/* $NetBSD: lstMember.c,v 1.13 2009/01/23 21:26:30 dsl Exp $ */ + +/* + * Copyright (c) 1988, 1989, 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Adam de Boor. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef MAKE_NATIVE +static char rcsid[] = "$NetBSD: lstMember.c,v 1.13 2009/01/23 21:26:30 dsl Exp $"; +#else +#include <sys/cdefs.h> +#ifndef lint +#if 0 +static char sccsid[] = "@(#)lstMember.c 8.1 (Berkeley) 6/6/93"; +#else +__RCSID("$NetBSD: lstMember.c,v 1.13 2009/01/23 21:26:30 dsl Exp $"); +#endif +#endif /* not lint */ +#endif + +/*- + * lstMember.c -- + * See if a given datum is on a given list. + */ + +#include "lstInt.h" + +LstNode +Lst_Member(Lst l, void *d) +{ + List list = l; + ListNode lNode; + + lNode = list->firstPtr; + if (lNode == NULL) { + return NULL; + } + + do { + if (lNode->datum == d) { + return lNode; + } + lNode = lNode->nextPtr; + } while (lNode != NULL && lNode != list->firstPtr); + + return NULL; +} |