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Remove pre-ISO C support
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a784e502 1/* Copyright (C) 1991,92,93,95,96,97,98,99,2001,2002,2004,2007-2009,2011,2012
396a21b1 2 Free Software Foundation, Inc.
ba1ffaa1 3 This file is part of the GNU C Library.
28f540f4 4
ba1ffaa1 5 The GNU C Library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
28f540f4 9
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10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
41bdb6e2 13 Lesser General Public License for more details.
28f540f4 14
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15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
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19
20/*
d1646309 21 * ISO C99 Standard 7.4: Character handling <ctype.h>
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22 */
23
24#ifndef _CTYPE_H
28f540f4 25#define _CTYPE_H 1
5107cf1d 26
28f540f4 27#include <features.h>
36775c3b 28#include <bits/types.h>
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29
30__BEGIN_DECLS
31
19bc17a9 32#ifndef _ISbit
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33/* These are all the characteristics of characters.
34 If there get to be more than 16 distinct characteristics,
35 many things must be changed that use `unsigned short int's.
36
37 The characteristics are stored always in network byte order (big
38 endian). We define the bit value interpretations here dependent on the
39 machine's byte order. */
40
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41# include <endian.h>
42# if __BYTE_ORDER == __BIG_ENDIAN
6685edd3 43# define _ISbit(bit) (1 << (bit))
dfd2257a 44# else /* __BYTE_ORDER == __LITTLE_ENDIAN */
6685edd3 45# define _ISbit(bit) ((bit) < 8 ? ((1 << (bit)) << 8) : ((1 << (bit)) >> 8))
dfd2257a 46# endif
28635115 47
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48enum
49{
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50 _ISupper = _ISbit (0), /* UPPERCASE. */
51 _ISlower = _ISbit (1), /* lowercase. */
52 _ISalpha = _ISbit (2), /* Alphabetic. */
53 _ISdigit = _ISbit (3), /* Numeric. */
54 _ISxdigit = _ISbit (4), /* Hexadecimal numeric. */
55 _ISspace = _ISbit (5), /* Whitespace. */
56 _ISprint = _ISbit (6), /* Printing. */
57 _ISgraph = _ISbit (7), /* Graphical. */
58 _ISblank = _ISbit (8), /* Blank (usually SPC and TAB). */
59 _IScntrl = _ISbit (9), /* Control character. */
60 _ISpunct = _ISbit (10), /* Punctuation. */
19bc17a9 61 _ISalnum = _ISbit (11) /* Alphanumeric. */
28f540f4 62};
19bc17a9 63#endif /* ! _ISbit */
28f540f4 64
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65/* These are defined in ctype-info.c.
66 The declarations here must match those in localeinfo.h.
67
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68 In the thread-specific locale model (see `uselocale' in <locale.h>)
69 we cannot use global variables for these as was done in the past.
70 Instead, the following accessor functions return the address of
71 each variable, which is local to the current thread if multithreaded.
72
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73 These point into arrays of 384, so they can be indexed by any `unsigned
74 char' value [0,255]; by EOF (-1); or by any `signed char' value
75 [-128,-1). ISO C requires that the ctype functions work for `unsigned
76 char' values and for EOF; we also support negative `signed char' values
77 for broken old programs. The case conversion arrays are of `int's
78 rather than `unsigned char's because tolower (EOF) must be EOF, which
79 doesn't fit into an `unsigned char'. But today more important is that
80 the arrays are also used for multi-byte character sets. */
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81extern const unsigned short int **__ctype_b_loc (void)
82 __THROW __attribute__ ((__const__));
83extern const __int32_t **__ctype_tolower_loc (void)
84 __THROW __attribute__ ((__const__));
85extern const __int32_t **__ctype_toupper_loc (void)
86 __THROW __attribute__ ((__const__));
d20fec5d 87
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88
89#ifndef __cplusplus
90# define __isctype(c, type) \
cf684340 91 ((*__ctype_b_loc ())[(int) (c)] & (unsigned short int) type)
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92#elif defined __USE_EXTERN_INLINES
93# define __isctype_f(type) \
94 __extern_inline int \
538faaa7 95 is##type (int __c) __THROW \
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96 { \
97 return (*__ctype_b_loc ())[(int) (__c)] & (unsigned short int) _IS##type; \
98 }
99#endif
d20fec5d 100
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101#define __isascii(c) (((c) & ~0x7f) == 0) /* If C is a 7 bit value. */
102#define __toascii(c) ((c) & 0x7f) /* Mask off high bits. */
28f540f4 103
c1422e5b 104#define __exctype(name) extern int name (int) __THROW
28f540f4 105
7a5affeb 106__BEGIN_NAMESPACE_STD
0f283ffc 107
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108/* The following names are all functions:
109 int isCHARACTERISTIC(int c);
110 which return nonzero iff C has CHARACTERISTIC.
111 For the meaning of the characteristic names, see the `enum' above. */
112__exctype (isalnum);
113__exctype (isalpha);
114__exctype (iscntrl);
115__exctype (isdigit);
116__exctype (islower);
117__exctype (isgraph);
118__exctype (isprint);
119__exctype (ispunct);
120__exctype (isspace);
121__exctype (isupper);
122__exctype (isxdigit);
123
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124
125/* Return the lowercase version of C. */
c1422e5b 126extern int tolower (int __c) __THROW;
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127
128/* Return the uppercase version of C. */
c1422e5b 129extern int toupper (int __c) __THROW;
28f540f4 130
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131__END_NAMESPACE_STD
132
133
134/* ISO C99 introduced one new function. */
135#ifdef __USE_ISOC99
136__BEGIN_NAMESPACE_C99
137
138__exctype (isblank);
139
140__END_NAMESPACE_C99
141#endif
28f540f4 142
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143#ifdef __USE_GNU
144/* Test C for a set of character classes according to MASK. */
145extern int isctype (int __c, int __mask) __THROW;
146#endif
147
dfd2257a 148#if defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN
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149
150/* Return nonzero iff C is in the ASCII set
151 (i.e., is no more than 7 bits wide). */
c1422e5b 152extern int isascii (int __c) __THROW;
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153
154/* Return the part of C that is in the ASCII set
155 (i.e., the low-order 7 bits of C). */
c1422e5b 156extern int toascii (int __c) __THROW;
28f540f4 157
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158/* These are the same as `toupper' and `tolower' except that they do not
159 check the argument for being in the range of a `char'. */
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160__exctype (_toupper);
161__exctype (_tolower);
70b2845f 162#endif /* Use SVID or use misc. */
28f540f4 163
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164/* This code is needed for the optimized mapping functions. */
165#define __tobody(c, f, a, args) \
166 (__extension__ \
167 ({ int __res; \
168 if (sizeof (c) > 1) \
169 { \
170 if (__builtin_constant_p (c)) \
171 { \
172 int __c = (c); \
0f283ffc 173 __res = __c < -128 || __c > 255 ? __c : (a)[__c]; \
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174 } \
175 else \
176 __res = f args; \
177 } \
178 else \
0f283ffc 179 __res = (a)[(int) (c)]; \
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180 __res; }))
181
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182#if !defined __NO_CTYPE
183# ifdef __isctype_f
184__isctype_f (alnum)
185__isctype_f (alpha)
186__isctype_f (cntrl)
187__isctype_f (digit)
188__isctype_f (lower)
189__isctype_f (graph)
190__isctype_f (print)
191__isctype_f (punct)
192__isctype_f (space)
193__isctype_f (upper)
194__isctype_f (xdigit)
195# ifdef __USE_ISOC99
196__isctype_f (blank)
197# endif
198# elif defined __isctype
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199# define isalnum(c) __isctype((c), _ISalnum)
200# define isalpha(c) __isctype((c), _ISalpha)
201# define iscntrl(c) __isctype((c), _IScntrl)
202# define isdigit(c) __isctype((c), _ISdigit)
203# define islower(c) __isctype((c), _ISlower)
204# define isgraph(c) __isctype((c), _ISgraph)
205# define isprint(c) __isctype((c), _ISprint)
206# define ispunct(c) __isctype((c), _ISpunct)
207# define isspace(c) __isctype((c), _ISspace)
208# define isupper(c) __isctype((c), _ISupper)
209# define isxdigit(c) __isctype((c), _ISxdigit)
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210# ifdef __USE_ISOC99
211# define isblank(c) __isctype((c), _ISblank)
212# endif
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213# endif
214
215# ifdef __USE_EXTERN_INLINES
b037a293 216__extern_inline int
f377d022 217__NTH (tolower (int __c))
d20fec5d 218{
cf684340 219 return __c >= -128 && __c < 256 ? (*__ctype_tolower_loc ())[__c] : __c;
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220}
221
b037a293 222__extern_inline int
f377d022 223__NTH (toupper (int __c))
d20fec5d 224{
cf684340 225 return __c >= -128 && __c < 256 ? (*__ctype_toupper_loc ())[__c] : __c;
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226}
227# endif
228
229# if __GNUC__ >= 2 && defined __OPTIMIZE__ && !defined __cplusplus
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230# define tolower(c) __tobody (c, tolower, *__ctype_tolower_loc (), (c))
231# define toupper(c) __tobody (c, toupper, *__ctype_toupper_loc (), (c))
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232# endif /* Optimizing gcc */
233
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234# if defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN
235# define isascii(c) __isascii (c)
236# define toascii(c) __toascii (c)
d20fec5d 237
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238# define _tolower(c) ((int) (*__ctype_tolower_loc ())[(int) (c)])
239# define _toupper(c) ((int) (*__ctype_toupper_loc ())[(int) (c)])
c813f986 240# endif
d20fec5d 241
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242#endif /* Not __NO_CTYPE. */
243
c84142e8 244
77db439e 245#ifdef __USE_XOPEN2K8
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246/* The concept of one static locale per category is not very well
247 thought out. Many applications will need to process its data using
248 information from several different locales. Another application is
249 the implementation of the internationalization handling in the
250 upcoming ISO C++ standard library. To support this another set of
251 the functions using locale data exist which have an additional
252 argument.
253
254 Attention: all these functions are *not* standardized in any form.
255 This is a proof-of-concept implementation. */
256
257/* Structure for reentrant locale using functions. This is an
258 (almost) opaque type for the user level programs. */
259# include <xlocale.h>
260
261/* These definitions are similar to the ones above but all functions
262 take as an argument a handle for the locale which shall be used. */
c1422e5b 263# define __isctype_l(c, type, locale) \
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264 ((locale)->__ctype_b[(int) (c)] & (unsigned short int) type)
265
1ab62b32 266# define __exctype_l(name) \
da4cfe38 267 extern int name (int, __locale_t) __THROW
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268
269/* The following names are all functions:
270 int isCHARACTERISTIC(int c, locale_t *locale);
271 which return nonzero iff C has CHARACTERISTIC.
272 For the meaning of the characteristic names, see the `enum' above. */
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273__exctype_l (isalnum_l);
274__exctype_l (isalpha_l);
275__exctype_l (iscntrl_l);
276__exctype_l (isdigit_l);
277__exctype_l (islower_l);
278__exctype_l (isgraph_l);
279__exctype_l (isprint_l);
280__exctype_l (ispunct_l);
281__exctype_l (isspace_l);
282__exctype_l (isupper_l);
283__exctype_l (isxdigit_l);
c84142e8 284
1ab62b32 285__exctype_l (isblank_l);
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286
287
288/* Return the lowercase version of C in locale L. */
c1422e5b 289extern int __tolower_l (int __c, __locale_t __l) __THROW;
1ab62b32 290extern int tolower_l (int __c, __locale_t __l) __THROW;
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291
292/* Return the uppercase version of C. */
c1422e5b 293extern int __toupper_l (int __c, __locale_t __l) __THROW;
1ab62b32 294extern int toupper_l (int __c, __locale_t __l) __THROW;
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295
296# if __GNUC__ >= 2 && defined __OPTIMIZE__ && !defined __cplusplus
297# define __tolower_l(c, locale) \
298 __tobody (c, __tolower_l, (locale)->__ctype_tolower, (c, locale))
299# define __toupper_l(c, locale) \
300 __tobody (c, __toupper_l, (locale)->__ctype_toupper, (c, locale))
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301# define tolower_l(c, locale) __tolower_l ((c), (locale))
302# define toupper_l(c, locale) __toupper_l ((c), (locale))
c1422e5b 303# endif /* Optimizing gcc */
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304
305
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306# ifndef __NO_CTYPE
307# define __isalnum_l(c,l) __isctype_l((c), _ISalnum, (l))
308# define __isalpha_l(c,l) __isctype_l((c), _ISalpha, (l))
309# define __iscntrl_l(c,l) __isctype_l((c), _IScntrl, (l))
310# define __isdigit_l(c,l) __isctype_l((c), _ISdigit, (l))
311# define __islower_l(c,l) __isctype_l((c), _ISlower, (l))
312# define __isgraph_l(c,l) __isctype_l((c), _ISgraph, (l))
313# define __isprint_l(c,l) __isctype_l((c), _ISprint, (l))
314# define __ispunct_l(c,l) __isctype_l((c), _ISpunct, (l))
315# define __isspace_l(c,l) __isctype_l((c), _ISspace, (l))
316# define __isupper_l(c,l) __isctype_l((c), _ISupper, (l))
317# define __isxdigit_l(c,l) __isctype_l((c), _ISxdigit, (l))
c84142e8 318
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319# define __isblank_l(c,l) __isctype_l((c), _ISblank, (l))
320
77db439e 321# if defined __USE_SVID || defined __USE_MISC
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322# define __isascii_l(c,l) ((l), __isascii (c))
323# define __toascii_l(c,l) ((l), __toascii (c))
324# endif
325
326# define isalnum_l(c,l) __isalnum_l ((c), (l))
327# define isalpha_l(c,l) __isalpha_l ((c), (l))
328# define iscntrl_l(c,l) __iscntrl_l ((c), (l))
329# define isdigit_l(c,l) __isdigit_l ((c), (l))
330# define islower_l(c,l) __islower_l ((c), (l))
331# define isgraph_l(c,l) __isgraph_l ((c), (l))
332# define isprint_l(c,l) __isprint_l ((c), (l))
333# define ispunct_l(c,l) __ispunct_l ((c), (l))
334# define isspace_l(c,l) __isspace_l ((c), (l))
335# define isupper_l(c,l) __isupper_l ((c), (l))
336# define isxdigit_l(c,l) __isxdigit_l ((c), (l))
337
338# define isblank_l(c,l) __isblank_l ((c), (l))
339
77db439e 340# if defined __USE_SVID || defined __USE_MISC
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341# define isascii_l(c,l) __isascii_l ((c), (l))
342# define toascii_l(c,l) __toascii_l ((c), (l))
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343# endif
344
345# endif /* Not __NO_CTYPE. */
c84142e8 346
77db439e 347#endif /* Use POSIX 2008. */
c84142e8 348
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349__END_DECLS
350
351#endif /* ctype.h */