ctype.h

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/*
 * 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_


#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_;


#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)]))

#define isascii(c)      ((unsigned)(c) <= 0177)
#define toascii(c)      ((c) & 0177)
#define _tolower(c)     ((c) - 'A' + 'a')
#define _toupper(c)     ((c) - 'a' + 'A')

#define _CTYPE_NUM_CHARS        (1 << CHAR_BIT)

#endif /* !_CTYPE_H_ */

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