/*FUNCTION	<<wcsstr>>---find a wide-character substring ANSI_SYNOPSIS	#include <wchar.h>	wchar_t *wcsstr(const wchar_t *<[big]>, const wchar_t *<[little]>);TRAD_SYNOPSIS	wchar_t *wcsstr(<[big]>, <[little]>	const wchar_t *<[big]>;	const wchar_t *<[little]>;DESCRIPTION	The <<wcsstr>> function locates the first occurrence in the	wide-character string pointed to by <[big]> of the sequence of	wide-characters (excluding the terminating null wide-character) in the	wide-character string pointed to by <[little]>.RETURNS	On successful completion, <<wcsstr>> returns a pointer to the located	wide-character string, or a null pointer if the wide-character string	is not found.	If <[little]> points to a wide-character string with zero length,	the function returns <[big]>.PORTABILITY<<wcsstr>> is ISO/IEC 9899/AMD1:1995 (ISO C).*//*	$NetBSD: wcsstr.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: wcsstr.c,v 1.2 2000/12/21 05:07:25 itojun Exp */#include <_ansi.h>#include <stddef.h>#include <wchar.h>wchar_t *_DEFUN (wcsstr, (big, little),	_CONST wchar_t * big _AND	_CONST wchar_t * little){  _CONST wchar_t *p;  _CONST wchar_t *q;  _CONST wchar_t *r;  if (!*little)    {      /* LINTED interface specification */      return (wchar_t *) big;    }  if (wcslen (big) < wcslen (little))    return NULL;  p = big;  q = little;  while (*p)    {      q = little;      r = p;      while (*q)	{	  if (*r != *q)	    break;	  q++;	  r++;	}      if (!*q)	{	  /* LINTED interface specification */	  return (wchar_t *) p;	}      p++;    }  return NULL;}