xref: /minix3/lib/libc/string/wcschr.c (revision 2fe8fb192fe7e8720e3e7a77f928da545e872a6a)
1*2fe8fb19SBen Gras /*	$NetBSD: wcschr.c,v 1.4 2005/06/04 20:09:56 dsl Exp $	*/
2*2fe8fb19SBen Gras 
3*2fe8fb19SBen Gras /*-
4*2fe8fb19SBen Gras  * Copyright (c)1999 Citrus Project,
5*2fe8fb19SBen Gras  * All rights reserved.
6*2fe8fb19SBen Gras  *
7*2fe8fb19SBen Gras  * Redistribution and use in source and binary forms, with or without
8*2fe8fb19SBen Gras  * modification, are permitted provided that the following conditions
9*2fe8fb19SBen Gras  * are met:
10*2fe8fb19SBen Gras  * 1. Redistributions of source code must retain the above copyright
11*2fe8fb19SBen Gras  *    notice, this list of conditions and the following disclaimer.
12*2fe8fb19SBen Gras  * 2. Redistributions in binary form must reproduce the above copyright
13*2fe8fb19SBen Gras  *    notice, this list of conditions and the following disclaimer in the
14*2fe8fb19SBen Gras  *    documentation and/or other materials provided with the distribution.
15*2fe8fb19SBen Gras  *
16*2fe8fb19SBen Gras  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17*2fe8fb19SBen Gras  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18*2fe8fb19SBen Gras  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19*2fe8fb19SBen Gras  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20*2fe8fb19SBen Gras  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21*2fe8fb19SBen Gras  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22*2fe8fb19SBen Gras  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23*2fe8fb19SBen Gras  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24*2fe8fb19SBen Gras  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25*2fe8fb19SBen Gras  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26*2fe8fb19SBen Gras  * SUCH DAMAGE.
27*2fe8fb19SBen Gras  *
28*2fe8fb19SBen Gras  *	citrus Id: wcschr.c,v 1.2 2000/12/21 05:07:25 itojun Exp
29*2fe8fb19SBen Gras  */
30*2fe8fb19SBen Gras 
31*2fe8fb19SBen Gras #include <sys/cdefs.h>
32*2fe8fb19SBen Gras #if defined(LIBC_SCCS) && !defined(lint)
33*2fe8fb19SBen Gras __RCSID("$NetBSD: wcschr.c,v 1.4 2005/06/04 20:09:56 dsl Exp $");
34*2fe8fb19SBen Gras #endif /* LIBC_SCCS and not lint */
35*2fe8fb19SBen Gras 
36*2fe8fb19SBen Gras #include <assert.h>
37*2fe8fb19SBen Gras #include <wchar.h>
38*2fe8fb19SBen Gras 
39*2fe8fb19SBen Gras wchar_t *
wcschr(const wchar_t * p,wchar_t c)40*2fe8fb19SBen Gras wcschr(const wchar_t *p, wchar_t c)
41*2fe8fb19SBen Gras {
42*2fe8fb19SBen Gras 	_DIAGASSERT(p != NULL);
43*2fe8fb19SBen Gras 
44*2fe8fb19SBen Gras 	for (;; ++p) {
45*2fe8fb19SBen Gras 		if (*p == c) {
46*2fe8fb19SBen Gras 			/* LINTED interface specification */
47*2fe8fb19SBen Gras 			return __UNCONST(p);
48*2fe8fb19SBen Gras 		}
49*2fe8fb19SBen Gras 		if (!*p)
50*2fe8fb19SBen Gras 			return NULL;
51*2fe8fb19SBen Gras 	}
52*2fe8fb19SBen Gras 	/*NOTREACHED*/
53*2fe8fb19SBen Gras }
54