1/*	$NetBSD: lstEnQueue.c,v 1.13 2009/01/23 21:26:30 dsl Exp $	*/
2
3/*
4 * Copyright (c) 1988, 1989, 1990, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Adam de Boor.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#ifndef MAKE_NATIVE
36static char rcsid[] = "$NetBSD: lstEnQueue.c,v 1.13 2009/01/23 21:26:30 dsl Exp $";
37#else
38#include <sys/cdefs.h>
39#ifndef lint
40#if 0
41static char sccsid[] = "@(#)lstEnQueue.c	8.1 (Berkeley) 6/6/93";
42#else
43__RCSID("$NetBSD: lstEnQueue.c,v 1.13 2009/01/23 21:26:30 dsl Exp $");
44#endif
45#endif /* not lint */
46#endif
47
48/*-
49 * LstEnQueue.c--
50 *	Treat the list as a queue and place a datum at its end
51 */
52
53#include	"lstInt.h"
54
55/*-
56 *-----------------------------------------------------------------------
57 * Lst_EnQueue --
58 *	Add the datum to the tail of the given list.
59 *
60 * Results:
61 *	SUCCESS or FAILURE as returned by Lst_InsertAfter.
62 *
63 * Side Effects:
64 *	the lastPtr field is altered all the time and the firstPtr field
65 *	will be altered if the list used to be empty.
66 *
67 *-----------------------------------------------------------------------
68 */
69ReturnStatus
70Lst_EnQueue(Lst l, void *d)
71{
72    if (LstValid (l) == FALSE) {
73	return (FAILURE);
74    }
75
76    return (Lst_InsertAfter(l, Lst_Last(l), d));
77}
78
79