2 * SPDX-License-Identifier: BSD-3-Clause
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.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
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.
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
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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
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33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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) >= '0' && (c) <= '9')
50 #define isxdigit(c) (isdigit(c) \
51 || ((c) >= 'A' && (c) <= 'F') \
52 || ((c) >= 'a' && (c) <= 'f'))
53 #define isprint(c) ((c) >= ' ' && (c) <= '~')
55 #define toupper(c) ((c) - 0x20 * (((c) >= 'a') && ((c) <= 'z')))
56 #define tolower(c) ((c) + 0x20 * (((c) >= 'A') && ((c) <= 'Z')))
59 #endif /* !_SYS_CTYPE_H_ */