1 /* Character handling in C locale.
3 These functions work like the corresponding functions in <ctype.h>,
4 except that they have the C (POSIX) locale hardwired, whereas the
5 <ctype.h> functions' behaviour depends on the current locale set via
8 Copyright (C) 2000-2003 Free Software Foundation, Inc.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
30 /* Check whether the ASCII optimizations apply. */
32 /* ANSI C89 (and ISO C99 5.2.1.3 too) already guarantees that
33 '0', '1', ..., '9' have consecutive integer values. */
34 #define C_CTYPE_CONSECUTIVE_DIGITS 1
37 && ('A' + 1 == 'B') && ('B' + 1 == 'C') && ('C' + 1 == 'D') \
38 && ('D' + 1 == 'E') && ('E' + 1 == 'F') && ('F' + 1 == 'G') \
39 && ('G' + 1 == 'H') && ('H' + 1 == 'I') && ('I' + 1 == 'J') \
40 && ('J' + 1 == 'K') && ('K' + 1 == 'L') && ('L' + 1 == 'M') \
41 && ('M' + 1 == 'N') && ('N' + 1 == 'O') && ('O' + 1 == 'P') \
42 && ('P' + 1 == 'Q') && ('Q' + 1 == 'R') && ('R' + 1 == 'S') \
43 && ('S' + 1 == 'T') && ('T' + 1 == 'U') && ('U' + 1 == 'V') \
44 && ('V' + 1 == 'W') && ('W' + 1 == 'X') && ('X' + 1 == 'Y') \
46 #define C_CTYPE_CONSECUTIVE_UPPERCASE 1
50 && ('a' + 1 == 'b') && ('b' + 1 == 'c') && ('c' + 1 == 'd') \
51 && ('d' + 1 == 'e') && ('e' + 1 == 'f') && ('f' + 1 == 'g') \
52 && ('g' + 1 == 'h') && ('h' + 1 == 'i') && ('i' + 1 == 'j') \
53 && ('j' + 1 == 'k') && ('k' + 1 == 'l') && ('l' + 1 == 'm') \
54 && ('m' + 1 == 'n') && ('n' + 1 == 'o') && ('o' + 1 == 'p') \
55 && ('p' + 1 == 'q') && ('q' + 1 == 'r') && ('r' + 1 == 's') \
56 && ('s' + 1 == 't') && ('t' + 1 == 'u') && ('u' + 1 == 'v') \
57 && ('v' + 1 == 'w') && ('w' + 1 == 'x') && ('x' + 1 == 'y') \
59 #define C_CTYPE_CONSECUTIVE_LOWERCASE 1
62 #if (' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
63 && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
64 && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
65 && ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
66 && ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
67 && ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
68 && ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
69 && ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
70 && ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
71 && ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
72 && ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
73 && ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
74 && ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
75 && ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
76 && ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
77 && ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
78 && ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
79 && ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
80 && ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
81 && ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
82 && ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
83 && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
84 && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126)
85 /* The character set is ISO646-US, not EBCDIC.
86 The test of '$' is important to distinguish it from other ISO646 variants.
87 Testing the value of '\n' and '\r' is not relevant. */
88 #define C_CTYPE_ASCII 1
92 /* Function declarations. */
94 extern bool c_isascii (int c); /* not locale dependent */
96 extern bool c_isalnum (int c);
97 extern bool c_isalpha (int c);
98 extern bool c_isblank (int c);
99 extern bool c_iscntrl (int c);
100 extern bool c_isdigit (int c);
101 extern bool c_islower (int c);
102 extern bool c_isgraph (int c);
103 extern bool c_isprint (int c);
104 extern bool c_ispunct (int c);
105 extern bool c_isspace (int c);
106 extern bool c_isupper (int c);
107 extern bool c_isxdigit (int c);
109 extern int c_tolower (int c);
110 extern int c_toupper (int c);
113 #if defined __GNUC__ && defined __OPTIMIZE__ && !defined __OPTIMIZE_SIZE__
115 /* ASCII optimizations. */
117 #define c_isascii(c) \
119 ((__c & ~0x7f) == 0); \
122 #if C_CTYPE_CONSECUTIVE_DIGITS \
123 && C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE
125 #define c_isalnum(c) \
127 ((__c >= '0' && __c <= '9') \
128 || ((__c & ~0x20) >= 'A' && (__c & ~0x20) <= 'Z')); \
131 #define c_isalnum(c) \
133 ((__c >= '0' && __c <= '9') \
134 || (__c >= 'A' && __c <= 'Z') \
135 || (__c >= 'a' && __c <= 'z')); \
140 #if C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE
142 #define c_isalpha(c) \
144 ((__c & ~0x20) >= 'A' && (__c & ~0x20) <= 'Z'); \
147 #define c_isalpha(c) \
149 ((__c >= 'A' && __c <= 'Z') || (__c >= 'a' && __c <= 'z')); \
154 #define c_isblank(c) \
156 (__c == ' ' || __c == '\t'); \
160 #define c_iscntrl(c) \
162 ((__c & ~0x1f) == 0 || __c == 0x7f); \
166 #if C_CTYPE_CONSECUTIVE_DIGITS
167 #define c_isdigit(c) \
169 (__c >= '0' && __c <= '9'); \
173 #if C_CTYPE_CONSECUTIVE_LOWERCASE
174 #define c_islower(c) \
176 (__c >= 'a' && __c <= 'z'); \
181 #define c_isgraph(c) \
183 (__c >= '!' && __c <= '~'); \
188 #define c_isprint(c) \
190 (__c >= ' ' && __c <= '~'); \
195 #define c_ispunct(c) \
197 (c_isgraph (_c) && ! c_isalnum (_c)); \
201 #define c_isspace(c) \
203 (__c == ' ' || __c == '\t' \
204 || __c == '\n' || __c == '\v' || __c == '\f' || __c == '\r'); \
207 #if C_CTYPE_CONSECUTIVE_UPPERCASE
208 #define c_isupper(c) \
210 (__c >= 'A' && __c <= 'Z'); \
214 #if C_CTYPE_CONSECUTIVE_DIGITS \
215 && C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE
217 #define c_isxdigit(c) \
219 ((__c >= '0' && __c <= '9') \
220 || ((__c & ~0x20) >= 'A' && (__c & ~0x20) <= 'F')); \
223 #define c_isxdigit(c) \
225 ((__c >= '0' && __c <= '9') \
226 || (__c >= 'A' && __c <= 'F') \
227 || (__c >= 'a' && __c <= 'f')); \
232 #if C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE
233 #define c_tolower(c) \
235 (__c >= 'A' && __c <= 'Z' ? __c - 'A' + 'a' : __c); \
237 #define c_toupper(c) \
239 (__c >= 'a' && __c <= 'z' ? __c - 'a' + 'A' : __c); \
243 #endif /* optimizing for speed */
245 #endif /* C_CTYPE_H */