The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/ctype.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-3-Clause
    3  *
    4  * Copyright (c) 1982, 1988, 1991, 1993
    5  *      The Regents of the University of California.  All rights reserved.
    6  * (c) UNIX System Laboratories, Inc.
    7  * All or some portions of this file are derived from material licensed
    8  * to the University of California by American Telephone and Telegraph
    9  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
   10  * the permission of UNIX System Laboratories, Inc.
   11  *
   12  * Redistribution and use in source and binary forms, with or without
   13  * modification, are permitted provided that the following conditions
   14  * are met:
   15  * 1. Redistributions of source code must retain the above copyright
   16  *    notice, this list of conditions and the following disclaimer.
   17  * 2. Redistributions in binary form must reproduce the above copyright
   18  *    notice, this list of conditions and the following disclaimer in the
   19  *    documentation and/or other materials provided with the distribution.
   20  * 3. Neither the name of the University nor the names of its contributors
   21  *    may be used to endorse or promote products derived from this software
   22  *    without specific prior written permission.
   23  *
   24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   34  * SUCH DAMAGE.
   35  *
   36  * $FreeBSD: head/sys/sys/ctype.h 326023 2017-11-20 19:43:44Z pfg $
   37  */
   38 
   39 #ifndef _SYS_CTYPE_H_
   40 #define _SYS_CTYPE_H_
   41 
   42 #ifdef _KERNEL
   43 
   44 #define isspace(c)      ((c) == ' ' || ((c) >= '\t' && (c) <= '\r'))
   45 #define isascii(c)      (((c) & ~0x7f) == 0)
   46 #define isupper(c)      ((c) >= 'A' && (c) <= 'Z')
   47 #define islower(c)      ((c) >= 'a' && (c) <= 'z')
   48 #define isalpha(c)      (isupper(c) || islower(c))
   49 #define isdigit(c)      ((c) >= '' && (c) <= '9')
   50 #define isxdigit(c)     (isdigit(c) \
   51                           || ((c) >= 'A' && (c) <= 'F') \
   52                           || ((c) >= 'a' && (c) <= 'f'))
   53 #define isprint(c)      ((c) >= ' ' && (c) <= '~')
   54 
   55 #define toupper(c)      ((c) - 0x20 * (((c) >= 'a') && ((c) <= 'z')))
   56 #define tolower(c)      ((c) + 0x20 * (((c) >= 'A') && ((c) <= 'Z')))
   57 
   58 #endif
   59 #endif /* !_SYS_CTYPE_H_ */

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