newlib-cygwin/newlib/libc/string/wcslen.c

69 lines
2.1 KiB
C

/*
FUNCTION
<<wcslen>>---get wide-character string length
SYNOPSIS
#include <wchar.h>
size_t wcslen(const wchar_t *<[s]>);
DESCRIPTION
The <<wcslen>> function computes the number of wide-character codes
in the wide-character string to which <[s]> points, not including the
terminating null wide-character code.
RETURNS
The <<wcslen>> function returns the length of <[s]>; no return value is
reserved to indicate an error.
PORTABILITY
<<wcslen>> is ISO/IEC 9899/AMD1:1995 (ISO C).
No supporting OS subroutines are required.
*/
/* $NetBSD: wcslen.c,v 1.1 2000/12/23 23:14:36 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: wcslen.c,v 1.1 1999/12/29 21:47:45 tshiozak Exp
*/
#include <_ansi.h>
#include <wchar.h>
size_t
_DEFUN (wcslen, (s),
const wchar_t * s)
{
const wchar_t *p;
p = s;
while (*p)
p++;
return p - s;
}