/*FUNCTION	<<wcsncmp>>---compare part of two wide-character strings ANSI_SYNOPSIS	#include <wchar.h>	int wcsncmp(const wchar_t *<[s1]>, const wchar_t *<[s2]>, size_t <[n]>);TRAD_SYNOPSIS	int wcsncmp(<[s1]>, <[s2]>, <[n]>	const wchar_t *<[s1]>;	const wchar_t *<[s2]>;	size_t <[n]>;DESCRIPTION	The <<wcsncmp>> function compares not more than <[n]> wide-character	codes (wide-character codes that follow a null wide-character code are	not compared) from the array pointed to by <[s1]> to the array pointed	to by <[s2]>.	The sign of a non-zero return value is determined by the sign of the	difference between the values of the first pair of wide-character codes	that differ in the objects being compared. RETURNS	Upon successful completion, <<wcsncmp>> returns an integer greater than,	equal to or less than 0, if the possibly null-terminated array pointed	to by <[s1]> is greater than, equal to or less than the possibly	null-terminated array pointed to by <[s2]> respectively. PORTABILITY<<wcsncmp>> is ISO/IEC 9899/AMD1:1995 (ISO C).No supporting OS subroutines are required.*//*	$NetBSD$	*//* * Copyright (c) 1989, 1993 *	The Regents of the University of California.  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. * 3. Neither the name of the University nor the names of its contributors *    may be used to endorse or promote products derived from this software *    without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. */#include <_ansi.h>#include <wchar.h>int_DEFUN (wcsncmp, (s1, s2, n),	_CONST wchar_t * s1 _AND	_CONST wchar_t * s2 _AND	size_t n){  if (n == 0)    return (0);  do    {      if (*s1 != *s2++)	{	  return (*s1 - *--s2);	}      if (*s1++ == 0)	break;    }  while (--n != 0);  return (0);}