83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
/*
|
|
FUNCTION
|
|
<<wcsrchr>>---wide-character string scanning operation
|
|
|
|
SYNOPSIS
|
|
#include <wchar.h>
|
|
wchar_t *wcsrchr(const wchar_t *<[s]>, wchar_t <[c]>);
|
|
|
|
DESCRIPTION
|
|
The <<wcsrchr>> function locates the last occurrence of <[c]> in the
|
|
wide-character string pointed to by <[s]>. The value of <[c]> must be a
|
|
character representable as a type wchar_t and must be a wide-character
|
|
code corresponding to a valid character in the current locale.
|
|
The terminating null wide-character code is considered to be part of
|
|
the wide-character string.
|
|
|
|
RETURNS
|
|
Upon successful completion, <<wcsrchr>> returns a pointer to the
|
|
wide-character code or a null pointer if <[c]> does not occur in the
|
|
wide-character string.
|
|
|
|
PORTABILITY
|
|
<<wcsrchr>> is ISO/IEC 9899/AMD1:1995 (ISO C).
|
|
|
|
No supporting OS subroutines are required.
|
|
*/
|
|
|
|
/* $NetBSD: wcsrchr.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: wcsrchr.c,v 1.2 2000/12/21 05:07:25 itojun Exp
|
|
*/
|
|
|
|
#include <_ansi.h>
|
|
#include <stddef.h>
|
|
#include <wchar.h>
|
|
|
|
wchar_t *
|
|
_DEFUN (wcsrchr, (s, c),
|
|
_CONST wchar_t * s,
|
|
wchar_t c)
|
|
{
|
|
_CONST wchar_t *p;
|
|
|
|
p = s;
|
|
while (*p)
|
|
p++;
|
|
while (s <= p)
|
|
{
|
|
if (*p == c)
|
|
{
|
|
/* LINTED interface specification */
|
|
return (wchar_t *) p;
|
|
}
|
|
p--;
|
|
}
|
|
return NULL;
|
|
}
|