text: /*******************************************************************************
   *
   * Copyright (C) 2014-2018 Wave Computing, Inc.
   *
   * 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 copyright holder 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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
   *
   ******************************************************************************/
  
  /* From newlib-2.0, no change */
  
  /* Copyright (c) 2002 Red Hat Incorporated.
     All rights reserved.
  
     Redistribution and use in source and binary forms, with or without
     modification, are permitted provided that the following conditions are met:
  
       Redistributions of source code must retain the above copyright
       notice, this list of conditions and the following disclaimer.
  
       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.
  
       The name of Red Hat Incorporated may not be used to endorse
       or promote products derived from this software without specific
       prior written permission.
  
     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 RED HAT INCORPORATED 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.
  */
  
  /*
  FUNCTION
  	<<iswspace>>---whitespace wide character test
  
  INDEX
  	iswspace
  
  ANSI_SYNOPSIS
  	#include <wctype.h>
  	int iswspace(wint_t <[c]>);
  
  TRAD_SYNOPSIS
  	#include <wctype.h>
  	int iswspace(<[c]>)
  	wint_t <[c]>;
  
  DESCRIPTION
  <<iswspace>> is a function which classifies wide-character values that
  are categorized as whitespace.
  
  RETURNS
  <<iswspace>> returns non-zero if <[c]> is a whitespace wide character.
  
  PORTABILITY
  <<iswspace>> is C99.
  
  No supporting OS subroutines are required.
  */
  
  #include <low/_flavour.h>
  #include <wctype.h>
  #include <ctype.h>
  #include <low/_stdlib.h>
  
  int
  iswspace(wint_t c)
  {
  #ifdef _MB_CAPABLE
    c = _jp2uc (c);
    /* Based on Unicode 5.2.  Control chars 09-0D, plus all characters
       from general category "Zs", which are not marked as decomposition
       type "noBreak". */
    return ((c >= 0x0009 && c <= 0x000d) || c == 0x0020 ||
  	  c == 0x1680 || c == 0x180e ||
  	  (c >= 0x2000 && c <= 0x2006) ||
  	  (c >= 0x2008 && c <= 0x200a) ||
  	  c == 0x2028 || c == 0x2029 ||
  	  c == 0x205f || c == 0x3000);
  #else		
    return (c < 0x100 ? isspace (c) : 0);
  #endif /* _MB_CAPABLE */
  }
  
  