xref: /rk3399_ARM-atf/lib/libc/strrchr.c (revision 668afe261dc118eea7d01074ac0f4a04fee14b50)
1*668afe26SAntonio Nino Diaz /*-
2*668afe26SAntonio Nino Diaz  * SPDX-License-Identifier: BSD-3-Clause
3*668afe26SAntonio Nino Diaz  *
4*668afe26SAntonio Nino Diaz  * Copyright (c) 1988, 1993
5*668afe26SAntonio Nino Diaz  *	The Regents of the University of California.  All rights reserved.
6*668afe26SAntonio Nino Diaz  *
7*668afe26SAntonio Nino Diaz  * Redistribution and use in source and binary forms, with or without
8*668afe26SAntonio Nino Diaz  * modification, are permitted provided that the following conditions
9*668afe26SAntonio Nino Diaz  * are met:
10*668afe26SAntonio Nino Diaz  * 1. Redistributions of source code must retain the above copyright
11*668afe26SAntonio Nino Diaz  *    notice, this list of conditions and the following disclaimer.
12*668afe26SAntonio Nino Diaz  * 2. Redistributions in binary form must reproduce the above copyright
13*668afe26SAntonio Nino Diaz  *    notice, this list of conditions and the following disclaimer in the
14*668afe26SAntonio Nino Diaz  *    documentation and/or other materials provided with the distribution.
15*668afe26SAntonio Nino Diaz  * 3. Neither the name of the University nor the names of its contributors
16*668afe26SAntonio Nino Diaz  *    may be used to endorse or promote products derived from this software
17*668afe26SAntonio Nino Diaz  *    without specific prior written permission.
18*668afe26SAntonio Nino Diaz  *
19*668afe26SAntonio Nino Diaz  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20*668afe26SAntonio Nino Diaz  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21*668afe26SAntonio Nino Diaz  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22*668afe26SAntonio Nino Diaz  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23*668afe26SAntonio Nino Diaz  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24*668afe26SAntonio Nino Diaz  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25*668afe26SAntonio Nino Diaz  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26*668afe26SAntonio Nino Diaz  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27*668afe26SAntonio Nino Diaz  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28*668afe26SAntonio Nino Diaz  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29*668afe26SAntonio Nino Diaz  * SUCH DAMAGE.
30*668afe26SAntonio Nino Diaz  */
31*668afe26SAntonio Nino Diaz 
32*668afe26SAntonio Nino Diaz #if defined(LIBC_SCCS) && !defined(lint)
33*668afe26SAntonio Nino Diaz static char sccsid[] = "@(#)rindex.c	8.1 (Berkeley) 6/4/93";
34*668afe26SAntonio Nino Diaz #endif /* LIBC_SCCS and not lint */
35*668afe26SAntonio Nino Diaz #include <sys/cdefs.h>
36*668afe26SAntonio Nino Diaz __FBSDID("$FreeBSD$");
37*668afe26SAntonio Nino Diaz 
38*668afe26SAntonio Nino Diaz #include <stddef.h>
39*668afe26SAntonio Nino Diaz #include <string.h>
40*668afe26SAntonio Nino Diaz 
41*668afe26SAntonio Nino Diaz char *
42*668afe26SAntonio Nino Diaz strrchr(const char *p, int ch)
43*668afe26SAntonio Nino Diaz {
44*668afe26SAntonio Nino Diaz 	char *save;
45*668afe26SAntonio Nino Diaz 	char c;
46*668afe26SAntonio Nino Diaz 
47*668afe26SAntonio Nino Diaz 	c = ch;
48*668afe26SAntonio Nino Diaz 	for (save = NULL;; ++p) {
49*668afe26SAntonio Nino Diaz 		if (*p == c)
50*668afe26SAntonio Nino Diaz 			save = (char *)p;
51*668afe26SAntonio Nino Diaz 		if (*p == '\0')
52*668afe26SAntonio Nino Diaz 			return (save);
53*668afe26SAntonio Nino Diaz 	}
54*668afe26SAntonio Nino Diaz 	/* NOTREACHED */
55*668afe26SAntonio Nino Diaz }
56*668afe26SAntonio Nino Diaz 
57*668afe26SAntonio Nino Diaz __weak_reference(strrchr, rindex);
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