1 /*
2 FUNCTION
3 <<wcschr>>---wide-character string scanning operation
4
5 SYNOPSIS
6 #include <wchar.h>
7 wchar_t *wcschr(const wchar_t *<[s]>, wchar_t <[c]>);
8
9 DESCRIPTION
10 The <<wcschr>> function locates the first occurrence of <[c]> in the
11 wide-character string pointed to by <[s]>. The value of <[c]> must be a
12 character representable as a type wchar_t and must be a wide-character
13 code corresponding to a valid character in the current locale.
14 The terminating null wide-character string.
15
16 RETURNS
17 Upon completion, <<wcschr>> returns a pointer to the wide-character
18 code, or a null pointer if the wide-character code is not found.
19
20 PORTABILITY
21 <<wcschr>> is ISO/IEC 9899/AMD1:1995 (ISO C).
22
23 No supporting OS subroutines are required.
24 */
25
26 /* $NetBSD: wcschr.c,v 1.1 2000/12/23 23:14:36 itojun Exp $ */
27
28 /*-
29 * Copyright (c)1999 Citrus Project,
30 * All rights reserved.
31 *
32 * Redistribution and use in source and binary forms, with or without
33 * modification, are permitted provided that the following conditions
34 * are met:
35 * 1. Redistributions of source code must retain the above copyright
36 * notice, this list of conditions and the following disclaimer.
37 * 2. Redistributions in binary form must reproduce the above copyright
38 * notice, this list of conditions and the following disclaimer in the
39 * documentation and/or other materials provided with the distribution.
40 *
41 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * citrus Id: wcschr.c,v 1.2 2000/12/21 05:07:25 itojun Exp
54 */
55
56 #include <_ansi.h>
57 #include <stddef.h>
58 #include <wchar.h>
59
60 wchar_t *
wcschr(const wchar_t * s,wchar_t c)61 wcschr (const wchar_t * s,
62 wchar_t c)
63 {
64 const wchar_t *p;
65
66 p = s;
67 do
68 {
69 if (*p == c)
70 {
71 /* LINTED interface specification */
72 return (wchar_t *) p;
73 }
74 } while (*p++);
75 return NULL;
76 }
77
