xref: /titanic_41/usr/src/lib/libbc/libc/gen/common/rindex.c (revision ea394cb00fd96864e34d2841b4a22357b621c78f)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 #pragma ident	"%Z%%M%	%I%	%E% SMI"
23 	  /* from UCB 4.1 80/12/21 */
24 
25 /*
26  * Return the ptr in sp at which the character c last
27  * appears; NULL if not found
28  */
29 
30 #define NULL 0
31 
32 char *
33 rindex(sp, c)
34 	register char *sp, c;
35 {
36 	register char *r;
37 
38 	r = NULL;
39 	do {
40 		if (*sp == c)
41 			r = sp;
42 	} while (*sp++);
43 	return (r);
44 }
45