FreeBSD/Linux Kernel Cross Reference
sys/sys/ctype.h
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 * $FreeBSD$
37 */
38
39 #ifndef _SYS_CTYPE_H_
40 #define _SYS_CTYPE_H_
41
42 #ifdef _KERNEL
43
44 static __inline int
45 isspace(int c)
46 {
47 return (c == ' ' || (c >= '\t' && c <= '\r'));
48 }
49
50 static __inline int
51 isascii(int c)
52 {
53 return ((c & ~0x7f) == 0);
54 }
55
56 static __inline int
57 isupper(int c)
58 {
59 return (c >= 'A' && c <= 'Z');
60 }
61
62 static __inline int
63 islower(int c)
64 {
65 return (c >= 'a' && c <= 'z');
66 }
67
68 static __inline int
69 isalpha(int c)
70 {
71 return (isupper(c) || islower(c));
72 }
73
74 static __inline int
75 isdigit(int c)
76 {
77 return (c >= '' && c <= '9');
78 }
79
80 static __inline int
81 isxdigit(int c)
82 {
83 return (isdigit(c) || (c >= 'A' && c <= 'F') || (c >= 'a' && c <= 'f'));
84 }
85
86 static __inline int
87 isprint(int c)
88 {
89 return (c >= ' ' && c <= '~');
90 }
91
92 static __inline int
93 toupper(int c)
94 {
95 return (c - 0x20 * ((c >= 'a') && (c <= 'z')));
96 }
97
98 static __inline int
99 tolower(int c)
100 {
101 return (c + 0x20 * ((c >= 'A') && (c <= 'Z')));
102 }
103
104 #endif
105 #endif /* !_SYS_CTYPE_H_ */
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