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Diffstat (limited to 'lst.lib/lstAtFront.c')
| -rw-r--r-- | lst.lib/lstAtFront.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/lst.lib/lstAtFront.c b/lst.lib/lstAtFront.c new file mode 100644 index 0000000..d8be166 --- /dev/null +++ b/lst.lib/lstAtFront.c @@ -0,0 +1,76 @@ +/* $NetBSD: lstAtFront.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: lstAtFront.c,v 1.13 2009/01/23 21:26:30 dsl Exp $"; +#else +#include <sys/cdefs.h> +#ifndef lint +#if 0 +static char sccsid[] = "@(#)lstAtFront.c 8.1 (Berkeley) 6/6/93"; +#else +__RCSID("$NetBSD: lstAtFront.c,v 1.13 2009/01/23 21:26:30 dsl Exp $"); +#endif +#endif /* not lint */ +#endif + +/*- + * LstAtFront.c -- + * Add a node at the front of the list + */ + +#include "lstInt.h" + +/*- + *----------------------------------------------------------------------- + * Lst_AtFront -- + * Place a piece of data at the front of a list + * + * Results: + * SUCCESS or FAILURE + * + * Side Effects: + * A new ListNode is created and stuck at the front of the list. + * hence, firstPtr (and possible lastPtr) in the list are altered. + * + *----------------------------------------------------------------------- + */ +ReturnStatus +Lst_AtFront(Lst l, void *d) +{ + LstNode front; + + front = Lst_First(l); + return (Lst_InsertBefore(l, front, d)); +} |