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/*
FUNCTION
<<wmemchr>>---find a wide character in memory
ANSI_SYNOPSIS
#include <wchar.h>
wchar_t *wmemchr(const wchar_t *<[s]>, wchar_t <[c]>, size_t <[n]>);
TRAD_SYNOPSIS
wchar_t *wmemchr(<[s]>, <[c]>, <[n]>
const wchar_t *<[s]>;
wchar_t <[c]>;
size_t <[n]>;
DESCRIPTION
The <<wmemchr>> function locates the first occurrence of <[c]> in the
initial <[n]> wide characters of the object pointed to be <[s]>. This
function is not affected by locale and all wchar_t values are treated
identically. The null wide character and wchar_t values not
corresponding to valid characters are not treated specially.
If <[n]> is zero, <[s]> must be a valid pointer and the function
behaves as if no valid occurrence of <[c]> is found.
RETURNS
The <<wmemchr>> function returns a pointer to the located
wide character, or a null pointer if the wide character does not occur
in the object.
PORTABILITY
<<wmemchr>> is ISO/IEC 9899/AMD1:1995 (ISO C).
No supporting OS subroutines are required.
*/
/* $NetBSD: wmemchr.c,v 1.1 2000/12/23 23:14:37 itojun Exp $ */
/*-
* Copyright (c)1999 Citrus Project,
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* citrus Id: wmemchr.c,v 1.2 2000/12/20 14:08:31 itojun Exp
*/
#include <_ansi.h>
#include <wchar.h>
wchar_t *
_DEFUN (wmemchr, (s, c, n),
_CONST wchar_t * s _AND
wchar_t c _AND
size_t n)
{
size_t i;
for (i = 0; i < n; i++)
{
if (*s == c)
{
/* LINTED const castaway */
return (wchar_t *) s;
}
s++;
}
return NULL;
}
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