/*FUNCTION	<<wcsspn>>---get length of a wide substring ANSI_SYNOPSIS	#include <wchar.h>	size_t wcsspn(const wchar_t *<[s]>, const wchar_t *<[set]>);TRAD_SYNOPSIS	size_t wcsspn(<[s]>, <[set]>	const wchar_t *<[s]>;	const wchar_t *<[set]>;DESCRIPTION	The <<wcsspn>> function computes the length of the maximum initial	segment of the wide-character string pointed to by <[s]> which consists	entirely of wide-character codes from the wide-character string	pointed to by <[set]>.RETURNS	The wcsspn() function returns the length <[s1]>; no return value is	reserved to indicate an error.PORTABILITY<<wcsspn>> is ISO/IEC 9899/AMD1:1995 (ISO C).No supporting OS subroutines are required.*//*	$NetBSD: wcsspn.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: wcsspn.c,v 1.1 1999/12/29 21:47:45 tshiozak Exp */#include <_ansi.h>#include <wchar.h>size_t_DEFUN (wcsspn, (s, set),	_CONST wchar_t * s _AND	_CONST wchar_t * set){  _CONST wchar_t *p;  _CONST wchar_t *q;  p = s;  while (*p)    {      q = set;      while (*q)	{	  if (*p == *q)	    break;	}      if (!*q)	goto done;      p++;    }done:  return (p - s);}