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  * Copyright (c) 1982, 1988, 1991, 1993
    3  *      The Regents of the University of California.  All rights reserved.
    4  * (c) UNIX System Laboratories, Inc.
    5  * All or some portions of this file are derived from material licensed
    6  * to the University of California by American Telephone and Telegraph
    7  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
    8  * the permission of UNIX System Laboratories, Inc.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 4. Neither the name of the University nor the names of its contributors
   19  *    may be used to endorse or promote products derived from this software
   20  *    without specific prior written permission.
   21  *
   22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   32  * SUCH DAMAGE.
   33  *
   34  * $FreeBSD: stable/11/sys/sys/ctype.h 345941 2019-04-05 11:34:13Z hselasky $
   35  */
   36 
   37 #ifndef _SYS_CTYPE_H_
   38 #define _SYS_CTYPE_H_
   39 
   40 #ifdef _KERNEL
   41 
   42 static __inline int
   43 isspace(int c)
   44 {
   45         return (c == ' ' || (c >= '\t' && c <= '\r'));
   46 }
   47 
   48 static __inline int
   49 isascii(int c)
   50 {
   51         return ((c & ~0x7f) == 0);
   52 }
   53 
   54 static __inline int
   55 isupper(int c)
   56 {
   57         return (c >= 'A' && c <= 'Z');
   58 }
   59 
   60 static __inline int
   61 islower(int c)
   62 {
   63         return (c >= 'a' && c <= 'z');
   64 }
   65 
   66 static __inline int
   67 isalpha(int c)
   68 {
   69         return (isupper(c) || islower(c));
   70 }
   71 
   72 static __inline int
   73 isdigit(int c)
   74 {
   75         return (c >= '' && c <= '9');
   76 }
   77 
   78 static __inline int
   79 isxdigit(int c)
   80 {
   81         return (isdigit(c) || (c >= 'A' && c <= 'F') || (c >= 'a' && c <= 'f'));
   82 }
   83 
   84 static __inline int
   85 isprint(int c)
   86 {
   87         return (c >= ' ' && c <= '~');
   88 }
   89 
   90 static __inline int
   91 toupper(int c)
   92 {
   93         return (c - 0x20 * ((c >= 'a') && (c <= 'z')));
   94 }
   95 
   96 static __inline int
   97 tolower(int c)
   98 {
   99         return (c + 0x20 * ((c >= 'A') && (c <= 'Z')));
  100 }
  101 
  102 #endif
  103 #endif /* !_SYS_CTYPE_H_ */

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