text: /*	$NetBSD: ctype.h,v 1.21 2001/04/18 01:45:18 thorpej Exp $	*/
  
  /*
   * Copyright (c) 1989 The Regents of the University of California.
   * All rights reserved.
   * (c) UNIX System Laboratories, Inc.
   * All or some portions of this file are derived from material licensed
   * to the University of California by American Telephone and Telegraph
   * Co. or Unix System Laboratories, Inc. and are reproduced herein with
   * the permission of UNIX System Laboratories, 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. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *	This product includes software developed by the University of
   *	California, Berkeley and its contributors.
   * 4. 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.
   *
   *	@(#)ctype.h	5.3 (Berkeley) 4/3/91
   */
  
  #ifndef _CTYPE_H_
  #define _CTYPE_H_
  
  #include <sys/featuretest.h>
  
  #include <sys/cdefs.h>
  
  #define	_U	0x01
  #define	_L	0x02
  #define	_N	0x04
  #define	_S	0x08
  #define	_P	0x10
  #define	_C	0x20
  #define	_X	0x40
  #define	_B	0x80
  
  extern const unsigned char	*_ctype_;
  extern const short	*_tolower_tab_;
  extern const short	*_toupper_tab_;
  
  
  __BEGIN_DECLS
  int	isalnum __P ((int));
  int	isalpha __P ((int));
  int	iscntrl __P ((int));
  int	isdigit __P ((int));
  int	isgraph __P ((int));
  int	islower __P ((int));
  int	isprint __P ((int));
  int	ispunct __P ((int));
  int	isspace __P ((int));
  int	isupper __P ((int));
  int	isxdigit __P ((int));
  int	tolower __P ((int));
  int	toupper __P ((int));
  
  #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) || \
      defined(_XOPEN_SOURCE)
  int	isascii __P ((int));
  int	toascii __P ((int));
  int	_tolower __P ((int));
  int	_toupper __P ((int));
  #endif
  
  #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \
      !defined(_XOPEN_SOURCE)
  int	isblank __P ((int));
  #endif
  __END_DECLS
  
  #define	isdigit(c)	((int)((_ctype_ + 1)[(int)(c)] & _N))
  #define	islower(c)	((int)((_ctype_ + 1)[(int)(c)] & _L))
  #define	isspace(c)	((int)((_ctype_ + 1)[(int)(c)] & _S))
  #define	ispunct(c)	((int)((_ctype_ + 1)[(int)(c)] & _P))
  #define	isupper(c)	((int)((_ctype_ + 1)[(int)(c)] & _U))
  #define	isalpha(c)	((int)((_ctype_ + 1)[(int)(c)] & (_U|_L)))
  #define	isxdigit(c)	((int)((_ctype_ + 1)[(int)(c)] & (_N|_X)))
  #define	isalnum(c)	((int)((_ctype_ + 1)[(int)(c)] & (_U|_L|_N)))
  #define	isprint(c)	((int)((_ctype_ + 1)[(int)(c)] & (_P|_U|_L|_N|_B)))
  #define	isgraph(c)	((int)((_ctype_ + 1)[(int)(c)] & (_P|_U|_L|_N)))
  #define	iscntrl(c)	((int)((_ctype_ + 1)[(int)(c)] & _C))
  #define	tolower(c)	((int)((_tolower_tab_ + 1)[(int)(c)]))
  #define	toupper(c)	((int)((_toupper_tab_ + 1)[(int)(c)]))
  
  #if !defined(_ANSI_SOURCE) && !defined (_POSIX_C_SOURCE) || \
      defined(_XOPEN_SOURCE)
  #define	isascii(c)	((unsigned)(c) <= 0177)
  #define	toascii(c)	((c) & 0177)
  #define _tolower(c)	((c) - 'A' + 'a')
  #define _toupper(c)	((c) - 'a' + 'A')
  #endif
  
  #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \
      !defined(_XOPEN_SOURCE)
  #if notyet
  /*
   * isblank() is implemented as C function, due to insufficient bitwidth in
   * _ctype_.  Note that _B does not mean isblank - it means isprint && !isgraph.
   */
  #define isblank(c)	((int)((_ctype_ + 1)[(int)(c)] & _B))
  #endif
  #endif
  
  #ifdef _CTYPE_PRIVATE
  #include <machine/limits.h>	/* for CHAR_BIT */
  
  #define _CTYPE_NUM_CHARS	(1 << CHAR_BIT)
  
  #define _CTYPE_ID	 	"BSDCTYPE"
  #define _CTYPE_REV		2
  
  extern const u_int8_t _C_ctype_[];
  extern const int16_t _C_toupper_[];
  extern const int16_t _C_tolower_[];
  #endif
  
  #endif /* !_CTYPE_H_ */
  