text: /*
   * Copyright (c) 2007, 2008 University of Tsukuba
   * 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 of Tsukuba 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 OWNER 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 <lib_ctype.h>
  
  int
  isalnum (int c)
  {
  	return isalpha(c) || isdigit(c);
  }
  
  int
  isalpha (int c)
  {
  	return isupper(c) || islower(c);
  }
  
  int
  isascii (int c)
  {
  	return c >= '\0' && c <= '\177';
  }
  
  int
  isblank (int c)
  {
  	return c == ' ' || c == '\t';
  }
  
  int
  iscntrl (int c)
  {
  	return isascii (c) && !isprint (c);
  }
  
  int
  isdigit (int c)
  {
  	return c >= '0' && c <= '9';
  }
  
  int
  isgraph (int c)
  {
  	return isprint (c) && !isblank (c);
  }
  
  int
  islower (int c)
  {
  	return c >= 'a' && c <= 'z';
  }
  
  int
  isprint (int c)
  {
  	return c >= ' ' && c <= '~';
  }
  
  int
  ispunct (int c)
  {
  	return isgraph (c) && !isalnum (c);
  }
  
  int
  isspace (int c)
  {
  	return isblank (c) || c == '\f' || c == '\n' || c == '\r' || c == '\v';
  }
  
  int
  isupper (int c)
  {
  	return c >= 'A' && c <= 'Z';
  }
  
  int
  isxdigit (int c)
  {
  	return isdigit (c) || (c >= 'A' && c <= 'F') || (c >= 'a' && c <= 'f');
  }
  