xref: /dflybsd-src/lib/libc/string/strrchr.c (revision 0d5acd7467c4e95f792ef49fceb3ab8e917ce86b)
1*0d5acd74SJohn Marino /*
2*0d5acd74SJohn Marino  * Copyright (c) 1988, 1993
3*0d5acd74SJohn Marino  *	The Regents of the University of California.  All rights reserved.
4*0d5acd74SJohn Marino  *
5*0d5acd74SJohn Marino  * Redistribution and use in source and binary forms, with or without
6*0d5acd74SJohn Marino  * modification, are permitted provided that the following conditions
7*0d5acd74SJohn Marino  * are met:
8*0d5acd74SJohn Marino  * 1. Redistributions of source code must retain the above copyright
9*0d5acd74SJohn Marino  *    notice, this list of conditions and the following disclaimer.
10*0d5acd74SJohn Marino  * 2. Redistributions in binary form must reproduce the above copyright
11*0d5acd74SJohn Marino  *    notice, this list of conditions and the following disclaimer in the
12*0d5acd74SJohn Marino  *    documentation and/or other materials provided with the distribution.
13*0d5acd74SJohn Marino  * 3. Neither the name of the University nor the names of its contributors
14*0d5acd74SJohn Marino  *    may be used to endorse or promote products derived from this software
15*0d5acd74SJohn Marino  *    without specific prior written permission.
16*0d5acd74SJohn Marino  *
17*0d5acd74SJohn Marino  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18*0d5acd74SJohn Marino  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19*0d5acd74SJohn Marino  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20*0d5acd74SJohn Marino  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21*0d5acd74SJohn Marino  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22*0d5acd74SJohn Marino  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23*0d5acd74SJohn Marino  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24*0d5acd74SJohn Marino  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25*0d5acd74SJohn Marino  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26*0d5acd74SJohn Marino  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27*0d5acd74SJohn Marino  * SUCH DAMAGE.
28*0d5acd74SJohn Marino  *
29*0d5acd74SJohn Marino  * @(#)rindex.c	8.1 (Berkeley) 6/4/93
30*0d5acd74SJohn Marino  * $FreeBSD: head/lib/libc/string/strrchr.c 251069 2013-05-28 20:57:40Z emaste $
31*0d5acd74SJohn Marino  */
32*0d5acd74SJohn Marino 
33*0d5acd74SJohn Marino #include <stddef.h>
34*0d5acd74SJohn Marino #include <string.h>
35*0d5acd74SJohn Marino 
36*0d5acd74SJohn Marino char *
strrchr(const char * p,int ch)37*0d5acd74SJohn Marino strrchr(const char *p, int ch)
38*0d5acd74SJohn Marino {
39*0d5acd74SJohn Marino 	char *save;
40*0d5acd74SJohn Marino 	char c;
41*0d5acd74SJohn Marino 
42*0d5acd74SJohn Marino 	c = ch;
43*0d5acd74SJohn Marino 	for (save = NULL;; ++p) {
44*0d5acd74SJohn Marino 		if (*p == c)
45*0d5acd74SJohn Marino 			save = (char *)p;
46*0d5acd74SJohn Marino 		if (*p == '\0')
47*0d5acd74SJohn Marino 			return (save);
48*0d5acd74SJohn Marino 	}
49*0d5acd74SJohn Marino 	/* NOTREACHED */
50*0d5acd74SJohn Marino }
51*0d5acd74SJohn Marino 
52*0d5acd74SJohn Marino __weak_reference(strrchr, rindex);
53