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
44static __inline int
45isspace(int c)
46{
47	return (c == ' ' || (c >= '\t' && c <= '\r'));
48}
49
50static __inline int
51isascii(int c)
52{
53	return ((c & ~0x7f) == 0);
54}
55
56static __inline int
57isupper(int c)
58{
59	return (c >= 'A' && c <= 'Z');
60}
61
62static __inline int
63islower(int c)
64{
65	return (c >= 'a' && c <= 'z');
66}
67
68static __inline int
69isalpha(int c)
70{
71	return (isupper(c) || islower(c));
72}
73
74static __inline int
75isdigit(int c)
76{
77	return (c >= '0' && c <= '9');
78}
79
80static __inline int
81isxdigit(int c)
82{
83	return (isdigit(c) || (c >= 'A' && c <= 'F') || (c >= 'a' && c <= 'f'));
84}
85
86static __inline int
87isprint(int c)
88{
89	return (c >= ' ' && c <= '~');
90}
91
92static __inline int
93toupper(int c)
94{
95	return (c - 0x20 * ((c >= 'a') && (c <= 'z')));
96}
97
98static __inline int
99tolower(int c)
100{
101	return (c + 0x20 * ((c >= 'A') && (c <= 'Z')));
102}
103
104#endif
105#endif /* !_SYS_CTYPE_H_ */
106