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  1. /*
  2. FUNCTION
  3.         <<wcschr>>---wide-character string scanning operation
  4.  
  5. ANSI_SYNOPSIS
  6.         #include <wchar.h>
  7.         wchar_t *wcschr(const wchar_t *<[s]>, wchar_t <[c]>);
  8.  
  9. TRAD_SYNOPSIS
  10.         wchar_t *wcschr(<[s]>, <[c]>
  11.         const wchar_t *<[s]>;
  12.         wchar_t <[c]>;
  13.  
  14. DESCRIPTION
  15.         The <<wcschr>> function locates the first occurrence of <[c]> in the
  16.         wide-character string pointed to by <[s]>. The value of <[c]> must be a
  17.         character representable as a type wchar_t and must be a wide-character
  18.         code corresponding to a valid character in the current locale.
  19.         The terminating null wide-character string.
  20.  
  21. RETURNS
  22.         Upon completion, <<wcschr>> returns a pointer to the wide-character
  23.         code, or a null pointer if the wide-character code is not found.
  24.  
  25. PORTABILITY
  26. <<wcschr>> is ISO/IEC 9899/AMD1:1995 (ISO C).
  27.  
  28. No supporting OS subroutines are required.
  29. */
  30.  
  31. /*      $NetBSD: wcschr.c,v 1.1 2000/12/23 23:14:36 itojun Exp $        */
  32.  
  33. /*-
  34.  * Copyright (c)1999 Citrus Project,
  35.  * All rights reserved.
  36.  *
  37.  * Redistribution and use in source and binary forms, with or without
  38.  * modification, are permitted provided that the following conditions
  39.  * are met:
  40.  * 1. Redistributions of source code must retain the above copyright
  41.  *    notice, this list of conditions and the following disclaimer.
  42.  * 2. Redistributions in binary form must reproduce the above copyright
  43.  *    notice, this list of conditions and the following disclaimer in the
  44.  *    documentation and/or other materials provided with the distribution.
  45.  *
  46.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  47.  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  48.  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  49.  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  50.  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  51.  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  52.  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  53.  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  54.  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  55.  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  56.  * SUCH DAMAGE.
  57.  *
  58.  *      citrus Id: wcschr.c,v 1.2 2000/12/21 05:07:25 itojun Exp
  59.  */
  60.  
  61. #include <_ansi.h>
  62. #include <stddef.h>
  63. #include <wchar.h>
  64.  
  65. wchar_t *
  66. _DEFUN (wcschr, (s, c),
  67.         _CONST wchar_t * s _AND
  68.         wchar_t c)
  69. {
  70.   _CONST wchar_t *p;
  71.  
  72.   p = s;
  73.   do
  74.     {
  75.       if (*p == c)
  76.         {
  77.           /* LINTED interface specification */
  78.           return (wchar_t *) p;
  79.         }
  80.     } while (*p++);
  81.   return NULL;
  82. }
  83.