strrchr.c revision 123631 
1224133Sdim/*
2224133Sdim * Copyright (c) 1988, 1993
3224133Sdim *	The Regents of the University of California.  All rights reserved.
4224133Sdim *
5224133Sdim * Redistribution and use in source and binary forms, with or without
6224133Sdim * modification, are permitted provided that the following conditions
7224133Sdim * are met:
8224133Sdim * 1. Redistributions of source code must retain the above copyright
9224133Sdim *    notice, this list of conditions and the following disclaimer.
10224133Sdim * 2. Redistributions in binary form must reproduce the above copyright
11224133Sdim *    notice, this list of conditions and the following disclaimer in the
12224133Sdim *    documentation and/or other materials provided with the distribution.
13224133Sdim * 3. All advertising materials mentioning features or use of this software
14224133Sdim *    must display the following acknowledgement:
15234353Sdim *	This product includes software developed by the University of
16224133Sdim *	California, Berkeley and its contributors.
17224133Sdim * 4. Neither the name of the University nor the names of its contributors
18234353Sdim *    may be used to endorse or promote products derived from this software
19234353Sdim *    without specific prior written permission.
20224133Sdim *
21224133Sdim * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22224133Sdim * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23224133Sdim * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24224133Sdim * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25224133Sdim * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26224133Sdim * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27224133Sdim * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28224133Sdim * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29224133Sdim * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30224133Sdim * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31224133Sdim * SUCH DAMAGE.
32 */
33
34#if defined(LIBC_SCCS) && !defined(lint)
35static char sccsid[] = "@(#)rindex.c	8.1 (Berkeley) 6/4/93";
36#endif /* LIBC_SCCS and not lint */
37#include <sys/cdefs.h>
38__FBSDID("$FreeBSD: head/lib/libc/string/rindex.c 123631 2003-12-18 07:44:53Z jkh $");
39
40#include <stddef.h>
41
42#ifdef STRRCHR
43#include <string.h>
44
45char *
46strrchr
47#else
48#include <strings.h>
49
50char *
51rindex
52#endif
53(const char *p, int ch)
54{
55	char *save;
56	char c;
57
58	c = ch;
59	for (save = NULL;; ++p) {
60		if (*p == c)
61			save = (char *)p;
62		if (*p == '\0')
63			return (save);
64	}
65	/* NOTREACHED */
66}
67