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/*
FUNCTION
<<wcsncat>>---concatenate part of two wide-character strings
ANSI_SYNOPSIS
#include <wchar.h>
wchar_t *wcsncat(wchar_t *<[s1]>, const wchar_t *<[s2]>, size_t <[n]>);
TRAD_SYNOPSIS
wchar_t *wcsncat(<[s1]>, <[s2]>, <[n]>
wchar_t *<[s1]>;
const wchar_t *<[s2]>;
size_t <[n]>;
DESCRIPTION
The <<wcsncat>> function appends not more than <[n]> wide-character
codes (a null wide-character code and wide-character codes that follow
it are not appended) from the array pointed to by <[s2]> to the end of
the wide-character string pointed to by <[s1]>. The initial
wide-character code of <[s2]> overwrites the null wide-character code
at the end of <[s1]>.
A terminating null wide-character code is always appended to the result.
If copying takes place between objects that overlap, the behaviour is
undefined.
RETURNS
The <<wcsncat>> function returns <[s1]>; no return value is reserved to
indicate an error.
PORTABILITY
<<wcsncat>> is ISO/IEC 9899/AMD1:1995 (ISO C).
No supporting OS subroutines are required.
*/
/* $NetBSD: wcsncat.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: wcsncat.c,v 1.1 1999/12/29 21:47:45 tshiozak Exp
*/
#include <_ansi.h>
#include <wchar.h>
wchar_t *
_DEFUN (wcsncat, (s1, s2, n),
wchar_t * s1 _AND
_CONST wchar_t * s2 _AND
size_t n)
{
wchar_t *p;
wchar_t *q;
_CONST wchar_t *r;
p = s1;
while (*p)
p++;
q = p;
r = s2;
while (*r && n)
{
*q++ = *r++;
n--;
}
*q = '\0';
return s1;
}
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