Fix use of restrict in wchar.h
[glibc.git] / wcsmbs / wchar.h
blobca8ba8029a55cccebf016debb5d3fa7ae1b9c64e
1 /* Copyright (C) 1995-2008, 2009, 2010 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA. */
20 * ISO C99 Standard: 7.24
21 * Extended multibyte and wide character utilities <wchar.h>
24 #ifndef _WCHAR_H
26 #if !defined __need_mbstate_t && !defined __need_wint_t
27 # define _WCHAR_H 1
28 # include <features.h>
29 #endif
31 #ifdef _WCHAR_H
32 /* Get FILE definition. */
33 # define __need___FILE
34 # if defined __USE_UNIX98 || defined __USE_XOPEN2K
35 # define __need_FILE
36 # endif
37 # include <stdio.h>
38 /* Get va_list definition. */
39 # define __need___va_list
40 # include <stdarg.h>
42 # include <bits/wchar.h>
44 /* Get size_t, wchar_t, wint_t and NULL from <stddef.h>. */
45 # define __need_size_t
46 # define __need_wchar_t
47 # define __need_NULL
48 #endif
49 #if defined _WCHAR_H || defined __need_wint_t || !defined __WINT_TYPE__
50 # undef __need_wint_t
51 # define __need_wint_t
52 # include <stddef.h>
54 /* We try to get wint_t from <stddef.h>, but not all GCC versions define it
55 there. So define it ourselves if it remains undefined. */
56 # ifndef _WINT_T
57 /* Integral type unchanged by default argument promotions that can
58 hold any value corresponding to members of the extended character
59 set, as well as at least one value that does not correspond to any
60 member of the extended character set. */
61 # define _WINT_T
62 typedef unsigned int wint_t;
63 # else
64 /* Work around problems with the <stddef.h> file which doesn't put
65 wint_t in the std namespace. */
66 # if defined __cplusplus && defined _GLIBCPP_USE_NAMESPACES \
67 && defined __WINT_TYPE__
68 __BEGIN_NAMESPACE_STD
69 typedef __WINT_TYPE__ wint_t;
70 __END_NAMESPACE_STD
71 # endif
72 # endif
74 /* Tell the caller that we provide correct C++ prototypes. */
75 # if defined __cplusplus && __GNUC_PREREQ (4, 4)
76 # define __CORRECT_ISO_CPP_WCHAR_H_PROTO
77 # endif
78 #endif
80 #if (defined _WCHAR_H || defined __need_mbstate_t) && !defined __mbstate_t_defined
81 # define __mbstate_t_defined 1
82 /* Conversion state information. */
83 typedef struct
85 int __count;
86 union
88 # ifdef __WINT_TYPE__
89 __WINT_TYPE__ __wch;
90 # else
91 wint_t __wch;
92 # endif
93 char __wchb[4];
94 } __value; /* Value so far. */
95 } __mbstate_t;
96 #endif
97 #undef __need_mbstate_t
100 /* The rest of the file is only used if used if __need_mbstate_t is not
101 defined. */
102 #ifdef _WCHAR_H
104 __BEGIN_NAMESPACE_C99
105 /* Public type. */
106 typedef __mbstate_t mbstate_t;
107 __END_NAMESPACE_C99
108 #ifdef __USE_GNU
109 __USING_NAMESPACE_C99(mbstate_t)
110 #endif
112 #ifndef WCHAR_MIN
113 /* These constants might also be defined in <inttypes.h>. */
114 # define WCHAR_MIN __WCHAR_MIN
115 # define WCHAR_MAX __WCHAR_MAX
116 #endif
118 #ifndef WEOF
119 # define WEOF (0xffffffffu)
120 #endif
122 /* For XPG4 compliance we have to define the stuff from <wctype.h> here
123 as well. */
124 #if defined __USE_XOPEN && !defined __USE_UNIX98
125 # include <wctype.h>
126 #endif
129 __BEGIN_DECLS
131 __BEGIN_NAMESPACE_STD
132 /* This incomplete type is defined in <time.h> but needed here because
133 of `wcsftime'. */
134 struct tm;
135 __END_NAMESPACE_STD
136 /* XXX We have to clean this up at some point. Since tm is in the std
137 namespace but wcsftime is in __c99 the type wouldn't be found
138 without inserting it in the global namespace. */
139 __USING_NAMESPACE_STD(tm)
142 __BEGIN_NAMESPACE_STD
143 /* Copy SRC to DEST. */
144 extern wchar_t *wcscpy (wchar_t *__restrict __dest,
145 __const wchar_t *__restrict __src) __THROW;
146 /* Copy no more than N wide-characters of SRC to DEST. */
147 extern wchar_t *wcsncpy (wchar_t *__restrict __dest,
148 __const wchar_t *__restrict __src, size_t __n)
149 __THROW;
151 /* Append SRC onto DEST. */
152 extern wchar_t *wcscat (wchar_t *__restrict __dest,
153 __const wchar_t *__restrict __src) __THROW;
154 /* Append no more than N wide-characters of SRC onto DEST. */
155 extern wchar_t *wcsncat (wchar_t *__restrict __dest,
156 __const wchar_t *__restrict __src, size_t __n)
157 __THROW;
159 /* Compare S1 and S2. */
160 extern int wcscmp (__const wchar_t *__s1, __const wchar_t *__s2)
161 __THROW __attribute_pure__;
162 /* Compare N wide-characters of S1 and S2. */
163 extern int wcsncmp (__const wchar_t *__s1, __const wchar_t *__s2, size_t __n)
164 __THROW __attribute_pure__;
165 __END_NAMESPACE_STD
167 #ifdef __USE_XOPEN2K8
168 /* Compare S1 and S2, ignoring case. */
169 extern int wcscasecmp (__const wchar_t *__s1, __const wchar_t *__s2) __THROW;
171 /* Compare no more than N chars of S1 and S2, ignoring case. */
172 extern int wcsncasecmp (__const wchar_t *__s1, __const wchar_t *__s2,
173 size_t __n) __THROW;
175 /* Similar to the two functions above but take the information from
176 the provided locale and not the global locale. */
177 # include <xlocale.h>
179 extern int wcscasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,
180 __locale_t __loc) __THROW;
182 extern int wcsncasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,
183 size_t __n, __locale_t __loc) __THROW;
184 #endif
186 __BEGIN_NAMESPACE_STD
187 /* Compare S1 and S2, both interpreted as appropriate to the
188 LC_COLLATE category of the current locale. */
189 extern int wcscoll (__const wchar_t *__s1, __const wchar_t *__s2) __THROW;
190 /* Transform S2 into array pointed to by S1 such that if wcscmp is
191 applied to two transformed strings the result is the as applying
192 `wcscoll' to the original strings. */
193 extern size_t wcsxfrm (wchar_t *__restrict __s1,
194 __const wchar_t *__restrict __s2, size_t __n) __THROW;
195 __END_NAMESPACE_STD
197 #ifdef __USE_XOPEN2K8
198 /* Similar to the two functions above but take the information from
199 the provided locale and not the global locale. */
201 /* Compare S1 and S2, both interpreted as appropriate to the
202 LC_COLLATE category of the given locale. */
203 extern int wcscoll_l (__const wchar_t *__s1, __const wchar_t *__s2,
204 __locale_t __loc) __THROW;
206 /* Transform S2 into array pointed to by S1 such that if wcscmp is
207 applied to two transformed strings the result is the as applying
208 `wcscoll' to the original strings. */
209 extern size_t wcsxfrm_l (wchar_t *__s1, __const wchar_t *__s2,
210 size_t __n, __locale_t __loc) __THROW;
212 /* Duplicate S, returning an identical malloc'd string. */
213 extern wchar_t *wcsdup (__const wchar_t *__s) __THROW __attribute_malloc__;
214 #endif
216 __BEGIN_NAMESPACE_STD
217 /* Find the first occurrence of WC in WCS. */
218 #ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO
219 extern "C++" wchar_t *wcschr (wchar_t *__wcs, wchar_t __wc)
220 __THROW __asm ("wcschr") __attribute_pure__;
221 extern "C++" __const wchar_t *wcschr (__const wchar_t *__wcs, wchar_t __wc)
222 __THROW __asm ("wcschr") __attribute_pure__;
223 #else
224 extern wchar_t *wcschr (__const wchar_t *__wcs, wchar_t __wc)
225 __THROW __attribute_pure__;
226 #endif
227 /* Find the last occurrence of WC in WCS. */
228 #ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO
229 extern "C++" wchar_t *wcsrchr (wchar_t *__wcs, wchar_t __wc)
230 __THROW __asm ("wcsrchr") __attribute_pure__;
231 extern "C++" __const wchar_t *wcsrchr (__const wchar_t *__wcs, wchar_t __wc)
232 __THROW __asm ("wcsrchr") __attribute_pure__;
233 #else
234 extern wchar_t *wcsrchr (__const wchar_t *__wcs, wchar_t __wc)
235 __THROW __attribute_pure__;
236 #endif
237 __END_NAMESPACE_STD
239 #ifdef __USE_GNU
240 /* This function is similar to `wcschr'. But it returns a pointer to
241 the closing NUL wide character in case C is not found in S. */
242 extern wchar_t *wcschrnul (__const wchar_t *__s, wchar_t __wc)
243 __THROW __attribute_pure__;
244 #endif
246 __BEGIN_NAMESPACE_STD
247 /* Return the length of the initial segmet of WCS which
248 consists entirely of wide characters not in REJECT. */
249 extern size_t wcscspn (__const wchar_t *__wcs, __const wchar_t *__reject)
250 __THROW __attribute_pure__;
251 /* Return the length of the initial segmet of WCS which
252 consists entirely of wide characters in ACCEPT. */
253 extern size_t wcsspn (__const wchar_t *__wcs, __const wchar_t *__accept)
254 __THROW __attribute_pure__;
255 /* Find the first occurrence in WCS of any character in ACCEPT. */
256 #ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO
257 extern "C++" wchar_t *wcspbrk (wchar_t *__wcs, __const wchar_t *__accept)
258 __THROW __asm ("wcspbrk") __attribute_pure__;
259 extern "C++" __const wchar_t *wcspbrk (__const wchar_t *__wcs,
260 __const wchar_t *__accept)
261 __THROW __asm ("wcspbrk") __attribute_pure__;
262 #else
263 extern wchar_t *wcspbrk (__const wchar_t *__wcs, __const wchar_t *__accept)
264 __THROW __attribute_pure__;
265 #endif
266 /* Find the first occurrence of NEEDLE in HAYSTACK. */
267 #ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO
268 extern "C++" wchar_t *wcsstr (wchar_t *__haystack, __const wchar_t *__needle)
269 __THROW __asm ("wcsstr") __attribute_pure__;
270 extern "C++" __const wchar_t *wcsstr (__const wchar_t *__haystack,
271 __const wchar_t *__needle)
272 __THROW __asm ("wcsstr") __attribute_pure__;
273 #else
274 extern wchar_t *wcsstr (__const wchar_t *__haystack, __const wchar_t *__needle)
275 __THROW __attribute_pure__;
276 #endif
278 /* Divide WCS into tokens separated by characters in DELIM. */
279 extern wchar_t *wcstok (wchar_t *__restrict __s,
280 __const wchar_t *__restrict __delim,
281 wchar_t **__restrict __ptr) __THROW;
283 /* Return the number of wide characters in S. */
284 extern size_t wcslen (__const wchar_t *__s) __THROW __attribute_pure__;
285 __END_NAMESPACE_STD
287 #ifdef __USE_XOPEN
288 /* Another name for `wcsstr' from XPG4. */
289 # ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO
290 extern "C++" wchar_t *wcswcs (wchar_t *__haystack, __const wchar_t *__needle)
291 __THROW __asm ("wcswcs") __attribute_pure__;
292 extern "C++" __const wchar_t *wcswcs (__const wchar_t *__haystack,
293 __const wchar_t *__needle)
294 __THROW __asm ("wcswcs") __attribute_pure__;
295 # else
296 extern wchar_t *wcswcs (__const wchar_t *__haystack, __const wchar_t *__needle)
297 __THROW __attribute_pure__;
298 # endif
299 #endif
301 #ifdef __USE_XOPEN2K8
302 /* Return the number of wide characters in S, but at most MAXLEN. */
303 extern size_t wcsnlen (__const wchar_t *__s, size_t __maxlen)
304 __THROW __attribute_pure__;
305 #endif
308 __BEGIN_NAMESPACE_STD
309 /* Search N wide characters of S for C. */
310 #ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO
311 extern "C++" wchar_t *wmemchr (wchar_t *__s, wchar_t __c, size_t __n)
312 __THROW __asm ("wmemchr") __attribute_pure__;
313 extern "C++" __const wchar_t *wmemchr (__const wchar_t *__s, wchar_t __c,
314 size_t __n)
315 __THROW __asm ("wmemchr") __attribute_pure__;
316 #else
317 extern wchar_t *wmemchr (__const wchar_t *__s, wchar_t __c, size_t __n)
318 __THROW __attribute_pure__;
319 #endif
321 /* Compare N wide characters of S1 and S2. */
322 extern int wmemcmp (__const wchar_t *__restrict __s1,
323 __const wchar_t *__restrict __s2, size_t __n)
324 __THROW __attribute_pure__;
326 /* Copy N wide characters of SRC to DEST. */
327 extern wchar_t *wmemcpy (wchar_t *__restrict __s1,
328 __const wchar_t *__restrict __s2, size_t __n) __THROW;
330 /* Copy N wide characters of SRC to DEST, guaranteeing
331 correct behavior for overlapping strings. */
332 extern wchar_t *wmemmove (wchar_t *__s1, __const wchar_t *__s2, size_t __n)
333 __THROW;
335 /* Set N wide characters of S to C. */
336 extern wchar_t *wmemset (wchar_t *__s, wchar_t __c, size_t __n) __THROW;
337 __END_NAMESPACE_STD
339 #ifdef __USE_GNU
340 /* Copy N wide characters of SRC to DEST and return pointer to following
341 wide character. */
342 extern wchar_t *wmempcpy (wchar_t *__restrict __s1,
343 __const wchar_t *__restrict __s2, size_t __n)
344 __THROW;
345 #endif
348 __BEGIN_NAMESPACE_STD
349 /* Determine whether C constitutes a valid (one-byte) multibyte
350 character. */
351 extern wint_t btowc (int __c) __THROW;
353 /* Determine whether C corresponds to a member of the extended
354 character set whose multibyte representation is a single byte. */
355 extern int wctob (wint_t __c) __THROW;
357 /* Determine whether PS points to an object representing the initial
358 state. */
359 extern int mbsinit (__const mbstate_t *__ps) __THROW __attribute_pure__;
361 /* Write wide character representation of multibyte character pointed
362 to by S to PWC. */
363 extern size_t mbrtowc (wchar_t *__restrict __pwc,
364 __const char *__restrict __s, size_t __n,
365 mbstate_t *__p) __THROW;
367 /* Write multibyte representation of wide character WC to S. */
368 extern size_t wcrtomb (char *__restrict __s, wchar_t __wc,
369 mbstate_t *__restrict __ps) __THROW;
371 /* Return number of bytes in multibyte character pointed to by S. */
372 extern size_t __mbrlen (__const char *__restrict __s, size_t __n,
373 mbstate_t *__restrict __ps) __THROW;
374 extern size_t mbrlen (__const char *__restrict __s, size_t __n,
375 mbstate_t *__restrict __ps) __THROW;
376 __END_NAMESPACE_STD
378 #ifdef __USE_EXTERN_INLINES
379 /* Define inline function as optimization. */
381 /* We can use the BTOWC and WCTOB optimizations since we know that all
382 locales must use ASCII encoding for the values in the ASCII range
383 and because the wchar_t encoding is always ISO 10646. */
384 extern wint_t __btowc_alias (int __c) __asm ("btowc");
385 __extern_inline wint_t
386 __NTH (btowc (int __c))
387 { return (__builtin_constant_p (__c) && __c >= '\0' && __c <= '\x7f'
388 ? (wint_t) __c : __btowc_alias (__c)); }
390 extern int __wctob_alias (wint_t __c) __asm ("wctob");
391 __extern_inline int
392 __NTH (wctob (wint_t __wc))
393 { return (__builtin_constant_p (__wc) && __wc >= L'\0' && __wc <= L'\x7f'
394 ? (int) __wc : __wctob_alias (__wc)); }
396 __extern_inline size_t
397 __NTH (mbrlen (__const char *__restrict __s, size_t __n,
398 mbstate_t *__restrict __ps))
399 { return (__ps != NULL
400 ? mbrtowc (NULL, __s, __n, __ps) : __mbrlen (__s, __n, NULL)); }
401 #endif
403 __BEGIN_NAMESPACE_STD
404 /* Write wide character representation of multibyte character string
405 SRC to DST. */
406 extern size_t mbsrtowcs (wchar_t *__restrict __dst,
407 __const char **__restrict __src, size_t __len,
408 mbstate_t *__restrict __ps) __THROW;
410 /* Write multibyte character representation of wide character string
411 SRC to DST. */
412 extern size_t wcsrtombs (char *__restrict __dst,
413 __const wchar_t **__restrict __src, size_t __len,
414 mbstate_t *__restrict __ps) __THROW;
415 __END_NAMESPACE_STD
418 #ifdef __USE_XOPEN2K8
419 /* Write wide character representation of at most NMC bytes of the
420 multibyte character string SRC to DST. */
421 extern size_t mbsnrtowcs (wchar_t *__restrict __dst,
422 __const char **__restrict __src, size_t __nmc,
423 size_t __len, mbstate_t *__restrict __ps) __THROW;
425 /* Write multibyte character representation of at most NWC characters
426 from the wide character string SRC to DST. */
427 extern size_t wcsnrtombs (char *__restrict __dst,
428 __const wchar_t **__restrict __src,
429 size_t __nwc, size_t __len,
430 mbstate_t *__restrict __ps) __THROW;
431 #endif /* use POSIX 2008 */
434 /* The following functions are extensions found in X/Open CAE. */
435 #ifdef __USE_XOPEN
436 /* Determine number of column positions required for C. */
437 extern int wcwidth (wchar_t __c) __THROW;
439 /* Determine number of column positions required for first N wide
440 characters (or fewer if S ends before this) in S. */
441 extern int wcswidth (__const wchar_t *__s, size_t __n) __THROW;
442 #endif /* Use X/Open. */
445 __BEGIN_NAMESPACE_STD
446 /* Convert initial portion of the wide string NPTR to `double'
447 representation. */
448 extern double wcstod (__const wchar_t *__restrict __nptr,
449 wchar_t **__restrict __endptr) __THROW;
450 __END_NAMESPACE_STD
452 #ifdef __USE_ISOC99
453 __BEGIN_NAMESPACE_C99
454 /* Likewise for `float' and `long double' sizes of floating-point numbers. */
455 extern float wcstof (__const wchar_t *__restrict __nptr,
456 wchar_t **__restrict __endptr) __THROW;
457 extern long double wcstold (__const wchar_t *__restrict __nptr,
458 wchar_t **__restrict __endptr) __THROW;
459 __END_NAMESPACE_C99
460 #endif /* C99 */
463 __BEGIN_NAMESPACE_STD
464 /* Convert initial portion of wide string NPTR to `long int'
465 representation. */
466 extern long int wcstol (__const wchar_t *__restrict __nptr,
467 wchar_t **__restrict __endptr, int __base) __THROW;
469 /* Convert initial portion of wide string NPTR to `unsigned long int'
470 representation. */
471 extern unsigned long int wcstoul (__const wchar_t *__restrict __nptr,
472 wchar_t **__restrict __endptr, int __base)
473 __THROW;
474 __END_NAMESPACE_STD
476 #if defined __USE_ISOC99 || (defined __GNUC__ && defined __USE_GNU)
477 __BEGIN_NAMESPACE_C99
478 /* Convert initial portion of wide string NPTR to `long long int'
479 representation. */
480 __extension__
481 extern long long int wcstoll (__const wchar_t *__restrict __nptr,
482 wchar_t **__restrict __endptr, int __base)
483 __THROW;
485 /* Convert initial portion of wide string NPTR to `unsigned long long int'
486 representation. */
487 __extension__
488 extern unsigned long long int wcstoull (__const wchar_t *__restrict __nptr,
489 wchar_t **__restrict __endptr,
490 int __base) __THROW;
491 __END_NAMESPACE_C99
492 #endif /* ISO C99 or GCC and GNU. */
494 #if defined __GNUC__ && defined __USE_GNU
495 /* Convert initial portion of wide string NPTR to `long long int'
496 representation. */
497 __extension__
498 extern long long int wcstoq (__const wchar_t *__restrict __nptr,
499 wchar_t **__restrict __endptr, int __base)
500 __THROW;
502 /* Convert initial portion of wide string NPTR to `unsigned long long int'
503 representation. */
504 __extension__
505 extern unsigned long long int wcstouq (__const wchar_t *__restrict __nptr,
506 wchar_t **__restrict __endptr,
507 int __base) __THROW;
508 #endif /* GCC and use GNU. */
510 #ifdef __USE_GNU
511 /* The concept of one static locale per category is not very well
512 thought out. Many applications will need to process its data using
513 information from several different locales. Another application is
514 the implementation of the internationalization handling in the
515 upcoming ISO C++ standard library. To support this another set of
516 the functions using locale data exist which have an additional
517 argument.
519 Attention: all these functions are *not* standardized in any form.
520 This is a proof-of-concept implementation. */
522 /* Structure for reentrant locale using functions. This is an
523 (almost) opaque type for the user level programs. */
524 # include <xlocale.h>
526 /* Special versions of the functions above which take the locale to
527 use as an additional parameter. */
528 extern long int wcstol_l (__const wchar_t *__restrict __nptr,
529 wchar_t **__restrict __endptr, int __base,
530 __locale_t __loc) __THROW;
532 extern unsigned long int wcstoul_l (__const wchar_t *__restrict __nptr,
533 wchar_t **__restrict __endptr,
534 int __base, __locale_t __loc) __THROW;
536 __extension__
537 extern long long int wcstoll_l (__const wchar_t *__restrict __nptr,
538 wchar_t **__restrict __endptr,
539 int __base, __locale_t __loc) __THROW;
541 __extension__
542 extern unsigned long long int wcstoull_l (__const wchar_t *__restrict __nptr,
543 wchar_t **__restrict __endptr,
544 int __base, __locale_t __loc)
545 __THROW;
547 extern double wcstod_l (__const wchar_t *__restrict __nptr,
548 wchar_t **__restrict __endptr, __locale_t __loc)
549 __THROW;
551 extern float wcstof_l (__const wchar_t *__restrict __nptr,
552 wchar_t **__restrict __endptr, __locale_t __loc)
553 __THROW;
555 extern long double wcstold_l (__const wchar_t *__restrict __nptr,
556 wchar_t **__restrict __endptr,
557 __locale_t __loc) __THROW;
558 #endif /* GNU */
561 #ifdef __USE_XOPEN2K8
562 /* Copy SRC to DEST, returning the address of the terminating L'\0' in
563 DEST. */
564 extern wchar_t *wcpcpy (wchar_t *__restrict __dest,
565 __const wchar_t *__restrict __src) __THROW;
567 /* Copy no more than N characters of SRC to DEST, returning the address of
568 the last character written into DEST. */
569 extern wchar_t *wcpncpy (wchar_t *__restrict __dest,
570 __const wchar_t *__restrict __src, size_t __n)
571 __THROW;
572 #endif /* use GNU */
575 /* Wide character I/O functions. */
577 #ifdef __USE_XOPEN2K8
578 /* Like OPEN_MEMSTREAM, but the stream is wide oriented and produces
579 a wide character string. */
580 extern __FILE *open_wmemstream (wchar_t **__bufloc, size_t *__sizeloc) __THROW;
581 #endif
583 #if defined __USE_ISOC95 || defined __USE_UNIX98
584 __BEGIN_NAMESPACE_STD
586 /* Select orientation for stream. */
587 extern int fwide (__FILE *__fp, int __mode) __THROW;
590 /* Write formatted output to STREAM.
592 This function is a possible cancellation point and therefore not
593 marked with __THROW. */
594 extern int fwprintf (__FILE *__restrict __stream,
595 __const wchar_t *__restrict __format, ...)
596 /* __attribute__ ((__format__ (__wprintf__, 2, 3))) */;
597 /* Write formatted output to stdout.
599 This function is a possible cancellation point and therefore not
600 marked with __THROW. */
601 extern int wprintf (__const wchar_t *__restrict __format, ...)
602 /* __attribute__ ((__format__ (__wprintf__, 1, 2))) */;
603 /* Write formatted output of at most N characters to S. */
604 extern int swprintf (wchar_t *__restrict __s, size_t __n,
605 __const wchar_t *__restrict __format, ...)
606 __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 4))) */;
608 /* Write formatted output to S from argument list ARG.
610 This function is a possible cancellation point and therefore not
611 marked with __THROW. */
612 extern int vfwprintf (__FILE *__restrict __s,
613 __const wchar_t *__restrict __format,
614 __gnuc_va_list __arg)
615 /* __attribute__ ((__format__ (__wprintf__, 2, 0))) */;
616 /* Write formatted output to stdout from argument list ARG.
618 This function is a possible cancellation point and therefore not
619 marked with __THROW. */
620 extern int vwprintf (__const wchar_t *__restrict __format,
621 __gnuc_va_list __arg)
622 /* __attribute__ ((__format__ (__wprintf__, 1, 0))) */;
623 /* Write formatted output of at most N character to S from argument
624 list ARG. */
625 extern int vswprintf (wchar_t *__restrict __s, size_t __n,
626 __const wchar_t *__restrict __format,
627 __gnuc_va_list __arg)
628 __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */;
631 /* Read formatted input from STREAM.
633 This function is a possible cancellation point and therefore not
634 marked with __THROW. */
635 extern int fwscanf (__FILE *__restrict __stream,
636 __const wchar_t *__restrict __format, ...)
637 /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
638 /* Read formatted input from stdin.
640 This function is a possible cancellation point and therefore not
641 marked with __THROW. */
642 extern int wscanf (__const wchar_t *__restrict __format, ...)
643 /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;
644 /* Read formatted input from S. */
645 extern int swscanf (__const wchar_t *__restrict __s,
646 __const wchar_t *__restrict __format, ...)
647 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
649 # if defined __USE_ISOC99 && !defined __USE_GNU \
650 && (!defined __LDBL_COMPAT || !defined __REDIRECT) \
651 && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K)
652 # ifdef __REDIRECT
653 /* For strict ISO C99 or POSIX compliance disallow %as, %aS and %a[
654 GNU extension which conflicts with valid %a followed by letter
655 s, S or [. */
656 extern int __REDIRECT (fwscanf, (__FILE *__restrict __stream,
657 __const wchar_t *__restrict __format, ...),
658 __isoc99_fwscanf)
659 /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
660 extern int __REDIRECT (wscanf, (__const wchar_t *__restrict __format, ...),
661 __isoc99_wscanf)
662 /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;
663 extern int __REDIRECT_NTH (swscanf, (__const wchar_t *__restrict __s,
664 __const wchar_t *__restrict __format,
665 ...), __isoc99_swscanf)
666 /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
667 # else
668 extern int __isoc99_fwscanf (__FILE *__restrict __stream,
669 __const wchar_t *__restrict __format, ...);
670 extern int __isoc99_wscanf (__const wchar_t *__restrict __format, ...);
671 extern int __isoc99_swscanf (__const wchar_t *__restrict __s,
672 __const wchar_t *__restrict __format, ...)
673 __THROW;
674 # define fwscanf __isoc99_fwscanf
675 # define wscanf __isoc99_wscanf
676 # define swscanf __isoc99_swscanf
677 # endif
678 # endif
680 __END_NAMESPACE_STD
681 #endif /* Use ISO C95, C99 and Unix98. */
683 #ifdef __USE_ISOC99
684 __BEGIN_NAMESPACE_C99
685 /* Read formatted input from S into argument list ARG.
687 This function is a possible cancellation point and therefore not
688 marked with __THROW. */
689 extern int vfwscanf (__FILE *__restrict __s,
690 __const wchar_t *__restrict __format,
691 __gnuc_va_list __arg)
692 /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
693 /* Read formatted input from stdin into argument list ARG.
695 This function is a possible cancellation point and therefore not
696 marked with __THROW. */
697 extern int vwscanf (__const wchar_t *__restrict __format,
698 __gnuc_va_list __arg)
699 /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */;
700 /* Read formatted input from S into argument list ARG. */
701 extern int vswscanf (__const wchar_t *__restrict __s,
702 __const wchar_t *__restrict __format,
703 __gnuc_va_list __arg)
704 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
706 # if !defined __USE_GNU \
707 && (!defined __LDBL_COMPAT || !defined __REDIRECT) \
708 && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K)
709 # ifdef __REDIRECT
710 extern int __REDIRECT (vfwscanf, (__FILE *__restrict __s,
711 __const wchar_t *__restrict __format,
712 __gnuc_va_list __arg), __isoc99_vfwscanf)
713 /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
714 extern int __REDIRECT (vwscanf, (__const wchar_t *__restrict __format,
715 __gnuc_va_list __arg), __isoc99_vwscanf)
716 /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */;
717 extern int __REDIRECT_NTH (vswscanf, (__const wchar_t *__restrict __s,
718 __const wchar_t *__restrict __format,
719 __gnuc_va_list __arg), __isoc99_vswscanf)
720 /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
721 # else
722 extern int __isoc99_vfwscanf (__FILE *__restrict __s,
723 __const wchar_t *__restrict __format,
724 __gnuc_va_list __arg);
725 extern int __isoc99_vwscanf (__const wchar_t *__restrict __format,
726 __gnuc_va_list __arg);
727 extern int __isoc99_vswscanf (__const wchar_t *__restrict __s,
728 __const wchar_t *__restrict __format,
729 __gnuc_va_list __arg) __THROW;
730 # define vfwscanf __isoc99_vfwscanf
731 # define vwscanf __isoc99_vwscanf
732 # define vswscanf __isoc99_vswscanf
733 # endif
734 # endif
736 __END_NAMESPACE_C99
737 #endif /* Use ISO C99. */
740 __BEGIN_NAMESPACE_STD
741 /* Read a character from STREAM.
743 These functions are possible cancellation points and therefore not
744 marked with __THROW. */
745 extern wint_t fgetwc (__FILE *__stream);
746 extern wint_t getwc (__FILE *__stream);
748 /* Read a character from stdin.
750 This function is a possible cancellation point and therefore not
751 marked with __THROW. */
752 extern wint_t getwchar (void);
755 /* Write a character to STREAM.
757 These functions are possible cancellation points and therefore not
758 marked with __THROW. */
759 extern wint_t fputwc (wchar_t __wc, __FILE *__stream);
760 extern wint_t putwc (wchar_t __wc, __FILE *__stream);
762 /* Write a character to stdout.
764 This function is a possible cancellation points and therefore not
765 marked with __THROW. */
766 extern wint_t putwchar (wchar_t __wc);
769 /* Get a newline-terminated wide character string of finite length
770 from STREAM.
772 This function is a possible cancellation points and therefore not
773 marked with __THROW. */
774 extern wchar_t *fgetws (wchar_t *__restrict __ws, int __n,
775 __FILE *__restrict __stream);
777 /* Write a string to STREAM.
779 This function is a possible cancellation points and therefore not
780 marked with __THROW. */
781 extern int fputws (__const wchar_t *__restrict __ws,
782 __FILE *__restrict __stream);
785 /* Push a character back onto the input buffer of STREAM.
787 This function is a possible cancellation points and therefore not
788 marked with __THROW. */
789 extern wint_t ungetwc (wint_t __wc, __FILE *__stream);
790 __END_NAMESPACE_STD
793 #ifdef __USE_GNU
794 /* These are defined to be equivalent to the `char' functions defined
795 in POSIX.1:1996.
797 These functions are not part of POSIX and therefore no official
798 cancellation point. But due to similarity with an POSIX interface
799 or due to the implementation they are cancellation points and
800 therefore not marked with __THROW. */
801 extern wint_t getwc_unlocked (__FILE *__stream);
802 extern wint_t getwchar_unlocked (void);
804 /* This is the wide character version of a GNU extension.
806 This function is not part of POSIX and therefore no official
807 cancellation point. But due to similarity with an POSIX interface
808 or due to the implementation it is a cancellation point and
809 therefore not marked with __THROW. */
810 extern wint_t fgetwc_unlocked (__FILE *__stream);
812 /* Faster version when locking is not necessary.
814 This function is not part of POSIX and therefore no official
815 cancellation point. But due to similarity with an POSIX interface
816 or due to the implementation it is a cancellation point and
817 therefore not marked with __THROW. */
818 extern wint_t fputwc_unlocked (wchar_t __wc, __FILE *__stream);
820 /* These are defined to be equivalent to the `char' functions defined
821 in POSIX.1:1996.
823 These functions are not part of POSIX and therefore no official
824 cancellation point. But due to similarity with an POSIX interface
825 or due to the implementation they are cancellation points and
826 therefore not marked with __THROW. */
827 extern wint_t putwc_unlocked (wchar_t __wc, __FILE *__stream);
828 extern wint_t putwchar_unlocked (wchar_t __wc);
831 /* This function does the same as `fgetws' but does not lock the stream.
833 This function is not part of POSIX and therefore no official
834 cancellation point. But due to similarity with an POSIX interface
835 or due to the implementation it is a cancellation point and
836 therefore not marked with __THROW. */
837 extern wchar_t *fgetws_unlocked (wchar_t *__restrict __ws, int __n,
838 __FILE *__restrict __stream);
840 /* This function does the same as `fputws' but does not lock the stream.
842 This function is not part of POSIX and therefore no official
843 cancellation point. But due to similarity with an POSIX interface
844 or due to the implementation it is a cancellation point and
845 therefore not marked with __THROW. */
846 extern int fputws_unlocked (__const wchar_t *__restrict __ws,
847 __FILE *__restrict __stream);
848 #endif
851 __BEGIN_NAMESPACE_C99
852 /* Format TP into S according to FORMAT.
853 Write no more than MAXSIZE wide characters and return the number
854 of wide characters written, or 0 if it would exceed MAXSIZE. */
855 extern size_t wcsftime (wchar_t *__restrict __s, size_t __maxsize,
856 __const wchar_t *__restrict __format,
857 __const struct tm *__restrict __tp) __THROW;
858 __END_NAMESPACE_C99
860 # ifdef __USE_GNU
861 # include <xlocale.h>
863 /* Similar to `wcsftime' but takes the information from
864 the provided locale and not the global locale. */
865 extern size_t wcsftime_l (wchar_t *__restrict __s, size_t __maxsize,
866 __const wchar_t *__restrict __format,
867 __const struct tm *__restrict __tp,
868 __locale_t __loc) __THROW;
869 # endif
871 /* The X/Open standard demands that most of the functions defined in
872 the <wctype.h> header must also appear here. This is probably
873 because some X/Open members wrote their implementation before the
874 ISO C standard was published and introduced the better solution.
875 We have to provide these definitions for compliance reasons but we
876 do this nonsense only if really necessary. */
877 #if defined __USE_UNIX98 && !defined __USE_GNU
878 # define __need_iswxxx
879 # include <wctype.h>
880 #endif
882 /* Define some macros helping to catch buffer overflows. */
883 #if __USE_FORTIFY_LEVEL > 0 && defined __extern_always_inline
884 # include <bits/wchar2.h>
885 #endif
887 #ifdef __LDBL_COMPAT
888 # include <bits/wchar-ldbl.h>
889 #endif
891 __END_DECLS
893 #endif /* _WCHAR_H defined */
895 #endif /* wchar.h */
897 /* Undefine all __need_* constants in case we are included to get those
898 constants but the whole file was already read. */
899 #undef __need_mbstate_t
900 #undef __need_wint_t