xref: /titanic_41/usr/src/lib/libbc/libc/gen/common/index.c (revision 70025d765b044c6d8594bb965a2247a61e991a99)
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 appears;
27  * NULL if not found
28  */
29 
30 #define	NULL	0
31 
32 char *
33 index(sp, c)
34 	register char *sp, c;
35 {
36 
37 	do {
38 		if (*sp == c)
39 			return (sp);
40 	} while (*sp++);
41 	return (NULL);
42 }
43