2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1989, 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 * This code is derived from software contributed to Berkeley by
13 * Paul Borman at Krystal Technologies.
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16 * modification, are permitted provided that the following conditions
18 * 1. Redistributions of source code must retain the above copyright
19 * notice, this list of conditions and the following disclaimer.
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22 * documentation and/or other materials provided with the distribution.
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24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
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39 * @(#)ctype.h 8.4 (Berkeley) 1/21/94
46 #include <sys/cdefs.h>
47 #include <sys/_types.h>
70 #if __ISO_C_VISIBLE >= 1999
84 #if __POSIX_VISIBLE >= 200809 || defined(_XLOCALE_H_)
85 #include <xlocale/_ctype.h>
90 #define isalnum(c) __sbistype((c), _CTYPE_A|_CTYPE_D|_CTYPE_N)
91 #define isalpha(c) __sbistype((c), _CTYPE_A)
92 #define iscntrl(c) __sbistype((c), _CTYPE_C)
93 #define isdigit(c) __sbistype((c), _CTYPE_D)
94 #define isgraph(c) __sbistype((c), _CTYPE_G)
95 #define islower(c) __sbistype((c), _CTYPE_L)
96 #define isprint(c) __sbistype((c), _CTYPE_R)
97 #define ispunct(c) __sbistype((c), _CTYPE_P)
98 #define isspace(c) __sbistype((c), _CTYPE_S)
99 #define isupper(c) __sbistype((c), _CTYPE_U)
100 #define isxdigit(c) __sbistype((c), _CTYPE_X)
101 #define tolower(c) __sbtolower(c)
102 #define toupper(c) __sbtoupper(c)
103 #endif /* !__cplusplus */
107 * POSIX.1-2001 specifies _tolower() and _toupper() to be macros equivalent to
108 * tolower() and toupper() respectively, minus extra checking to ensure that
109 * the argument is a lower or uppercase letter respectively. We've chosen to
110 * implement these macros with the same error checking as tolower() and
111 * toupper() since this doesn't violate the specification itself, only its
112 * intent. We purposely leave _tolower() and _toupper() undocumented to
113 * discourage their use.
115 * XXX isascii() and toascii() should similarly be undocumented.
117 #define _tolower(c) __sbtolower(c)
118 #define _toupper(c) __sbtoupper(c)
119 #define isascii(c) (((c) & ~0x7F) == 0)
120 #define toascii(c) ((c) & 0x7F)
123 #if __ISO_C_VISIBLE >= 1999 && !defined(__cplusplus)
124 #define isblank(c) __sbistype((c), _CTYPE_B)
128 #define digittoint(c) __sbmaskrune((c), 0xFF)
129 #define ishexnumber(c) __sbistype((c), _CTYPE_X)
130 #define isideogram(c) __sbistype((c), _CTYPE_I)
131 #define isnumber(c) __sbistype((c), _CTYPE_D|_CTYPE_N)
132 #define isphonogram(c) __sbistype((c), _CTYPE_Q)
133 #define isrune(c) __sbistype((c), 0xFFFFFF00L)
134 #define isspecial(c) __sbistype((c), _CTYPE_T)
137 #endif /* !_CTYPE_H_ */