/*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;}