1/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
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.
8
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.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
17
18/*
19 * ISO C99 Standard: 7.24
20 * Extended multibyte and wide character utilities <wchar.h>
21 */
22
23#ifndef _WCHAR_H
24
25#if !defined __need_mbstate_t && !defined __need_wint_t
26# define _WCHAR_H 1
27# include <features.h>
28#endif
29
30#ifdef _WCHAR_H
31/* Get FILE definition. */
32# define __need___FILE
33# if defined __USE_UNIX98 || defined __USE_XOPEN2K
34# define __need_FILE
35# endif
36# include <stdio.h>
37/* Get va_list definition. */
38# define __need___va_list
39# include <stdarg.h>
40
41# include <bits/wchar.h>
42
43/* Get size_t, wchar_t, wint_t and NULL from <stddef.h>. */
44# define __need_size_t
45# define __need_wchar_t
46# define __need_NULL
47#endif
48#if defined _WCHAR_H || defined __need_wint_t || !defined __WINT_TYPE__
49# undef __need_wint_t
50# define __need_wint_t
51# include <stddef.h>
52
53/* We try to get wint_t from <stddef.h>, but not all GCC versions define it
54 there. So define it ourselves if it remains undefined. */
55# ifndef _WINT_T
56/* Integral type unchanged by default argument promotions that can
57 hold any value corresponding to members of the extended character
58 set, as well as at least one value that does not correspond to any
59 member of the extended character set. */
60# define _WINT_T
61typedef unsigned int wint_t;
62# else
63/* Work around problems with the <stddef.h> file which doesn't put
64 wint_t in the std namespace. */
65# if defined __cplusplus && defined _GLIBCPP_USE_NAMESPACES \
66 && defined __WINT_TYPE__
67__BEGIN_NAMESPACE_STD
68typedef __WINT_TYPE__ wint_t;
69__END_NAMESPACE_STD
70# endif
71# endif
72
73/* Tell the caller that we provide correct C++ prototypes. */
74# if defined __cplusplus && __GNUC_PREREQ (4, 4)
75# define __CORRECT_ISO_CPP_WCHAR_H_PROTO
76# endif
77#endif
78
79#if (defined _WCHAR_H || defined __need_mbstate_t) && !defined ____mbstate_t_defined
80# define ____mbstate_t_defined 1
81/* Conversion state information. */
82typedef struct
83{
84 int __count;
85 union
86 {
87# ifdef __WINT_TYPE__
88 __WINT_TYPE__ __wch;
89# else
90 wint_t __wch;
91# endif
92 char __wchb[4];
93 } __value; /* Value so far. */
94} __mbstate_t;
95#endif
96#undef __need_mbstate_t
97
98
99/* The rest of the file is only used if used if __need_mbstate_t is not
100 defined. */
101#ifdef _WCHAR_H
102
103# ifndef __mbstate_t_defined
104__BEGIN_NAMESPACE_C99
105/* Public type. */
106typedef __mbstate_t mbstate_t;
107__END_NAMESPACE_C99
108# define __mbstate_t_defined 1
109# endif
110
111#ifdef __USE_GNU
112__USING_NAMESPACE_C99(mbstate_t)
113#endif
114
115#ifndef WCHAR_MIN
116/* These constants might also be defined in <inttypes.h>. */
117# define WCHAR_MIN __WCHAR_MIN
118# define WCHAR_MAX __WCHAR_MAX
119#endif
120
121#ifndef WEOF
122# define WEOF (0xffffffffu)
123#endif
124
125/* For XPG4 compliance we have to define the stuff from <wctype.h> here
126 as well. */
127#if defined __USE_XOPEN && !defined __USE_UNIX98
128# include <wctype.h>
129#endif
130
131
132__BEGIN_DECLS
133
134__BEGIN_NAMESPACE_STD
135/* This incomplete type is defined in <time.h> but needed here because
136 of `wcsftime'. */
137struct tm;
138__END_NAMESPACE_STD
139/* XXX We have to clean this up at some point. Since tm is in the std
140 namespace but wcsftime is in __c99 the type wouldn't be found
141 without inserting it in the global namespace. */
142__USING_NAMESPACE_STD(tm)
143
144
145__BEGIN_NAMESPACE_STD
146/* Copy SRC to DEST. */
147extern wchar_t *wcscpy (wchar_t *__restrict __dest,
148 const wchar_t *__restrict __src)
149 __THROW __nonnull ((1, 2));
150
151/* Copy no more than N wide-characters of SRC to DEST. */
152extern wchar_t *wcsncpy (wchar_t *__restrict __dest,
153 const wchar_t *__restrict __src, size_t __n)
154 __THROW __nonnull ((1, 2));
155
156/* Append SRC onto DEST. */
157extern wchar_t *wcscat (wchar_t *__restrict __dest,
158 const wchar_t *__restrict __src)
159 __THROW __nonnull ((1, 2));
160/* Append no more than N wide-characters of SRC onto DEST. */
161extern wchar_t *wcsncat (wchar_t *__restrict __dest,
162 const wchar_t *__restrict __src, size_t __n)
163 __THROW __nonnull ((1, 2));
164
165/* Compare S1 and S2. */
166extern int wcscmp (const wchar_t *__s1, const wchar_t *__s2)
167 __THROW __attribute_pure__ __nonnull ((1, 2));
168/* Compare N wide-characters of S1 and S2. */
169extern int wcsncmp (const wchar_t *__s1, const wchar_t *__s2, size_t __n)
170 __THROW __attribute_pure__ __nonnull ((1, 2));
171__END_NAMESPACE_STD
172
173#ifdef __USE_XOPEN2K8
174/* Compare S1 and S2, ignoring case. */
175extern int wcscasecmp (const wchar_t *__s1, const wchar_t *__s2) __THROW;
176
177/* Compare no more than N chars of S1 and S2, ignoring case. */
178extern int wcsncasecmp (const wchar_t *__s1, const wchar_t *__s2,
179 size_t __n) __THROW;
180
181/* Similar to the two functions above but take the information from
182 the provided locale and not the global locale. */
183# include <xlocale.h>
184
185extern int wcscasecmp_l (const wchar_t *__s1, const wchar_t *__s2,
186 __locale_t __loc) __THROW;
187
188extern int wcsncasecmp_l (const wchar_t *__s1, const wchar_t *__s2,
189 size_t __n, __locale_t __loc) __THROW;
190#endif
191
192__BEGIN_NAMESPACE_STD
193/* Compare S1 and S2, both interpreted as appropriate to the
194 LC_COLLATE category of the current locale. */
195extern int wcscoll (const wchar_t *__s1, const wchar_t *__s2) __THROW;
196/* Transform S2 into array pointed to by S1 such that if wcscmp is
197 applied to two transformed strings the result is the as applying
198 `wcscoll' to the original strings. */
199extern size_t wcsxfrm (wchar_t *__restrict __s1,
200 const wchar_t *__restrict __s2, size_t __n) __THROW;
201__END_NAMESPACE_STD
202
203#ifdef __USE_XOPEN2K8
204/* Similar to the two functions above but take the information from
205 the provided locale and not the global locale. */
206
207/* Compare S1 and S2, both interpreted as appropriate to the
208 LC_COLLATE category of the given locale. */
209extern int wcscoll_l (const wchar_t *__s1, const wchar_t *__s2,
210 __locale_t __loc) __THROW;
211
212/* Transform S2 into array pointed to by S1 such that if wcscmp is
213 applied to two transformed strings the result is the as applying
214 `wcscoll' to the original strings. */
215extern size_t wcsxfrm_l (wchar_t *__s1, const wchar_t *__s2,
216 size_t __n, __locale_t __loc) __THROW;
217
218/* Duplicate S, returning an identical malloc'd string. */
219extern wchar_t *wcsdup (const wchar_t *__s) __THROW __attribute_malloc__;
220#endif
221
222__BEGIN_NAMESPACE_STD
223/* Find the first occurrence of WC in WCS. */
224#ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO
225extern "C++" wchar_t *wcschr (wchar_t *__wcs, wchar_t __wc)
226 __THROW __asm ("wcschr") __attribute_pure__;
227extern "C++" const wchar_t *wcschr (const wchar_t *__wcs, wchar_t __wc)
228 __THROW __asm ("wcschr") __attribute_pure__;
229#else
230extern wchar_t *wcschr (const wchar_t *__wcs, wchar_t __wc)
231 __THROW __attribute_pure__;
232#endif
233/* Find the last occurrence of WC in WCS. */
234#ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO
235extern "C++" wchar_t *wcsrchr (wchar_t *__wcs, wchar_t __wc)
236 __THROW __asm ("wcsrchr") __attribute_pure__;
237extern "C++" const wchar_t *wcsrchr (const wchar_t *__wcs, wchar_t __wc)
238 __THROW __asm ("wcsrchr") __attribute_pure__;
239#else
240extern wchar_t *wcsrchr (const wchar_t *__wcs, wchar_t __wc)
241 __THROW __attribute_pure__;
242#endif
243__END_NAMESPACE_STD
244
245#ifdef __USE_GNU
246/* This function is similar to `wcschr'. But it returns a pointer to
247 the closing NUL wide character in case C is not found in S. */
248extern wchar_t *wcschrnul (const wchar_t *__s, wchar_t __wc)
249 __THROW __attribute_pure__;
250#endif
251
252__BEGIN_NAMESPACE_STD
253/* Return the length of the initial segmet of WCS which
254 consists entirely of wide characters not in REJECT. */
255extern size_t wcscspn (const wchar_t *__wcs, const wchar_t *__reject)
256 __THROW __attribute_pure__;
257/* Return the length of the initial segmet of WCS which
258 consists entirely of wide characters in ACCEPT. */
259extern size_t wcsspn (const wchar_t *__wcs, const wchar_t *__accept)
260 __THROW __attribute_pure__;
261/* Find the first occurrence in WCS of any character in ACCEPT. */
262#ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO
263extern "C++" wchar_t *wcspbrk (wchar_t *__wcs, const wchar_t *__accept)
264 __THROW __asm ("wcspbrk") __attribute_pure__;
265extern "C++" const wchar_t *wcspbrk (const wchar_t *__wcs,
266 const wchar_t *__accept)
267 __THROW __asm ("wcspbrk") __attribute_pure__;
268#else
269extern wchar_t *wcspbrk (const wchar_t *__wcs, const wchar_t *__accept)
270 __THROW __attribute_pure__;
271#endif
272/* Find the first occurrence of NEEDLE in HAYSTACK. */
273#ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO
274extern "C++" wchar_t *wcsstr (wchar_t *__haystack, const wchar_t *__needle)
275 __THROW __asm ("wcsstr") __attribute_pure__;
276extern "C++" const wchar_t *wcsstr (const wchar_t *__haystack,
277 const wchar_t *__needle)
278 __THROW __asm ("wcsstr") __attribute_pure__;
279#else
280extern wchar_t *wcsstr (const wchar_t *__haystack, const wchar_t *__needle)
281 __THROW __attribute_pure__;
282#endif
283
284/* Divide WCS into tokens separated by characters in DELIM. */
285extern wchar_t *wcstok (wchar_t *__restrict __s,
286 const wchar_t *__restrict __delim,
287 wchar_t **__restrict __ptr) __THROW;
288
289/* Return the number of wide characters in S. */
290extern size_t wcslen (const wchar_t *__s) __THROW __attribute_pure__;
291__END_NAMESPACE_STD
292
293#ifdef __USE_XOPEN
294/* Another name for `wcsstr' from XPG4. */
295# ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO
296extern "C++" wchar_t *wcswcs (wchar_t *__haystack, const wchar_t *__needle)
297 __THROW __asm ("wcswcs") __attribute_pure__;
298extern "C++" const wchar_t *wcswcs (const wchar_t *__haystack,
299 const wchar_t *__needle)
300 __THROW __asm ("wcswcs") __attribute_pure__;
301# else
302extern wchar_t *wcswcs (const wchar_t *__haystack, const wchar_t *__needle)
303 __THROW __attribute_pure__;
304# endif
305#endif
306
307#ifdef __USE_XOPEN2K8
308/* Return the number of wide characters in S, but at most MAXLEN. */
309extern size_t wcsnlen (const wchar_t *__s, size_t __maxlen)
310 __THROW __attribute_pure__;
311#endif
312
313
314__BEGIN_NAMESPACE_STD
315/* Search N wide characters of S for C. */
316#ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO
317extern "C++" wchar_t *wmemchr (wchar_t *__s, wchar_t __c, size_t __n)
318 __THROW __asm ("wmemchr") __attribute_pure__;
319extern "C++" const wchar_t *wmemchr (const wchar_t *__s, wchar_t __c,
320 size_t __n)
321 __THROW __asm ("wmemchr") __attribute_pure__;
322#else
323extern wchar_t *wmemchr (const wchar_t *__s, wchar_t __c, size_t __n)
324 __THROW __attribute_pure__;
325#endif
326
327/* Compare N wide characters of S1 and S2. */
328extern int wmemcmp (const wchar_t *__s1, const wchar_t *__s2, size_t __n)
329 __THROW __attribute_pure__;
330
331/* Copy N wide characters of SRC to DEST. */
332extern wchar_t *wmemcpy (wchar_t *__restrict __s1,
333 const wchar_t *__restrict __s2, size_t __n) __THROW;
334
335/* Copy N wide characters of SRC to DEST, guaranteeing
336 correct behavior for overlapping strings. */
337extern wchar_t *wmemmove (wchar_t *__s1, const wchar_t *__s2, size_t __n)
338 __THROW;
339
340/* Set N wide characters of S to C. */
341extern wchar_t *wmemset (wchar_t *__s, wchar_t __c, size_t __n) __THROW;
342__END_NAMESPACE_STD
343
344#ifdef __USE_GNU
345/* Copy N wide characters of SRC to DEST and return pointer to following
346 wide character. */
347extern wchar_t *wmempcpy (wchar_t *__restrict __s1,
348 const wchar_t *__restrict __s2, size_t __n)
349 __THROW;
350#endif
351
352
353__BEGIN_NAMESPACE_STD
354/* Determine whether C constitutes a valid (one-byte) multibyte
355 character. */
356extern wint_t btowc (int __c) __THROW;
357
358/* Determine whether C corresponds to a member of the extended
359 character set whose multibyte representation is a single byte. */
360extern int wctob (wint_t __c) __THROW;
361
362/* Determine whether PS points to an object representing the initial
363 state. */
364extern int mbsinit (const mbstate_t *__ps) __THROW __attribute_pure__;
365
366/* Write wide character representation of multibyte character pointed
367 to by S to PWC. */
368extern size_t mbrtowc (wchar_t *__restrict __pwc,
369 const char *__restrict __s, size_t __n,
370 mbstate_t *__restrict __p) __THROW;
371
372/* Write multibyte representation of wide character WC to S. */
373extern size_t wcrtomb (char *__restrict __s, wchar_t __wc,
374 mbstate_t *__restrict __ps) __THROW;
375
376/* Return number of bytes in multibyte character pointed to by S. */
377extern size_t __mbrlen (const char *__restrict __s, size_t __n,
378 mbstate_t *__restrict __ps) __THROW;
379extern size_t mbrlen (const char *__restrict __s, size_t __n,
380 mbstate_t *__restrict __ps) __THROW;
381__END_NAMESPACE_STD
382
383#ifdef __USE_EXTERN_INLINES
384/* Define inline function as optimization. */
385
386/* We can use the BTOWC and WCTOB optimizations since we know that all
387 locales must use ASCII encoding for the values in the ASCII range
388 and because the wchar_t encoding is always ISO 10646. */
389extern wint_t __btowc_alias (int __c) __asm ("btowc");
390__extern_inline wint_t
391__NTH (btowc (int __c))
392{ return (__builtin_constant_p (__c) && __c >= '\0' && __c <= '\x7f'
393 ? (wint_t) __c : __btowc_alias (__c)); }
394
395extern int __wctob_alias (wint_t __c) __asm ("wctob");
396__extern_inline int
397__NTH (wctob (wint_t __wc))
398{ return (__builtin_constant_p (__wc) && __wc >= L'\0' && __wc <= L'\x7f'
399 ? (int) __wc : __wctob_alias (__wc)); }
400
401__extern_inline size_t
402__NTH (mbrlen (const char *__restrict __s, size_t __n,
403 mbstate_t *__restrict __ps))
404{ return (__ps != NULL
405 ? mbrtowc (NULL, __s, __n, __ps) : __mbrlen (__s, __n, NULL)); }
406#endif
407
408__BEGIN_NAMESPACE_STD
409/* Write wide character representation of multibyte character string
410 SRC to DST. */
411extern size_t mbsrtowcs (wchar_t *__restrict __dst,
412 const char **__restrict __src, size_t __len,
413 mbstate_t *__restrict __ps) __THROW;
414
415/* Write multibyte character representation of wide character string
416 SRC to DST. */
417extern size_t wcsrtombs (char *__restrict __dst,
418 const wchar_t **__restrict __src, size_t __len,
419 mbstate_t *__restrict __ps) __THROW;
420__END_NAMESPACE_STD
421
422
423#ifdef __USE_XOPEN2K8
424/* Write wide character representation of at most NMC bytes of the
425 multibyte character string SRC to DST. */
426extern size_t mbsnrtowcs (wchar_t *__restrict __dst,
427 const char **__restrict __src, size_t __nmc,
428 size_t __len, mbstate_t *__restrict __ps) __THROW;
429
430/* Write multibyte character representation of at most NWC characters
431 from the wide character string SRC to DST. */
432extern size_t wcsnrtombs (char *__restrict __dst,
433 const wchar_t **__restrict __src,
434 size_t __nwc, size_t __len,
435 mbstate_t *__restrict __ps) __THROW;
436#endif /* use POSIX 2008 */
437
438
439/* The following functions are extensions found in X/Open CAE. */
440#ifdef __USE_XOPEN
441/* Determine number of column positions required for C. */
442extern int wcwidth (wchar_t __c) __THROW;
443
444/* Determine number of column positions required for first N wide
445 characters (or fewer if S ends before this) in S. */
446extern int wcswidth (const wchar_t *__s, size_t __n) __THROW;
447#endif /* Use X/Open. */
448
449
450__BEGIN_NAMESPACE_STD
451/* Convert initial portion of the wide string NPTR to `double'
452 representation. */
453extern double wcstod (const wchar_t *__restrict __nptr,
454 wchar_t **__restrict __endptr) __THROW;
455__END_NAMESPACE_STD
456
457#ifdef __USE_ISOC99
458__BEGIN_NAMESPACE_C99
459/* Likewise for `float' and `long double' sizes of floating-point numbers. */
460extern float wcstof (const wchar_t *__restrict __nptr,
461 wchar_t **__restrict __endptr) __THROW;
462extern long double wcstold (const wchar_t *__restrict __nptr,
463 wchar_t **__restrict __endptr) __THROW;
464__END_NAMESPACE_C99
465#endif /* C99 */
466
467
468__BEGIN_NAMESPACE_STD
469/* Convert initial portion of wide string NPTR to `long int'
470 representation. */
471extern long int wcstol (const wchar_t *__restrict __nptr,
472 wchar_t **__restrict __endptr, int __base) __THROW;
473
474/* Convert initial portion of wide string NPTR to `unsigned long int'
475 representation. */
476extern unsigned long int wcstoul (const wchar_t *__restrict __nptr,
477 wchar_t **__restrict __endptr, int __base)
478 __THROW;
479__END_NAMESPACE_STD
480
481#ifdef __USE_ISOC99
482__BEGIN_NAMESPACE_C99
483/* Convert initial portion of wide string NPTR to `long long int'
484 representation. */
485__extension__
486extern long long int wcstoll (const wchar_t *__restrict __nptr,
487 wchar_t **__restrict __endptr, int __base)
488 __THROW;
489
490/* Convert initial portion of wide string NPTR to `unsigned long long int'
491 representation. */
492__extension__
493extern unsigned long long int wcstoull (const wchar_t *__restrict __nptr,
494 wchar_t **__restrict __endptr,
495 int __base) __THROW;
496__END_NAMESPACE_C99
497#endif /* ISO C99. */
498
499#ifdef __USE_GNU
500/* Convert initial portion of wide string NPTR to `long long int'
501 representation. */
502__extension__
503extern long long int wcstoq (const wchar_t *__restrict __nptr,
504 wchar_t **__restrict __endptr, int __base)
505 __THROW;
506
507/* Convert initial portion of wide string NPTR to `unsigned long long int'
508 representation. */
509__extension__
510extern unsigned long long int wcstouq (const wchar_t *__restrict __nptr,
511 wchar_t **__restrict __endptr,
512 int __base) __THROW;
513#endif /* Use GNU. */
514
515#ifdef __USE_GNU
516/* The concept of one static locale per category is not very well
517 thought out. Many applications will need to process its data using
518 information from several different locales. Another application is
519 the implementation of the internationalization handling in the
520 upcoming ISO C++ standard library. To support this another set of
521 the functions using locale data exist which have an additional
522 argument.
523
524 Attention: all these functions are *not* standardized in any form.
525 This is a proof-of-concept implementation. */
526
527/* Structure for reentrant locale using functions. This is an
528 (almost) opaque type for the user level programs. */
529# include <xlocale.h>
530
531/* Special versions of the functions above which take the locale to
532 use as an additional parameter. */
533extern long int wcstol_l (const wchar_t *__restrict __nptr,
534 wchar_t **__restrict __endptr, int __base,
535 __locale_t __loc) __THROW;
536
537extern unsigned long int wcstoul_l (const wchar_t *__restrict __nptr,
538 wchar_t **__restrict __endptr,
539 int __base, __locale_t __loc) __THROW;
540
541__extension__
542extern long long int wcstoll_l (const wchar_t *__restrict __nptr,
543 wchar_t **__restrict __endptr,
544 int __base, __locale_t __loc) __THROW;
545
546__extension__
547extern unsigned long long int wcstoull_l (const wchar_t *__restrict __nptr,
548 wchar_t **__restrict __endptr,
549 int __base, __locale_t __loc)
550 __THROW;
551
552extern double wcstod_l (const wchar_t *__restrict __nptr,
553 wchar_t **__restrict __endptr, __locale_t __loc)
554 __THROW;
555
556extern float wcstof_l (const wchar_t *__restrict __nptr,
557 wchar_t **__restrict __endptr, __locale_t __loc)
558 __THROW;
559
560extern long double wcstold_l (const wchar_t *__restrict __nptr,
561 wchar_t **__restrict __endptr,
562 __locale_t __loc) __THROW;
563#endif /* use GNU */
564
565
566#ifdef __USE_XOPEN2K8
567/* Copy SRC to DEST, returning the address of the terminating L'\0' in
568 DEST. */
569extern wchar_t *wcpcpy (wchar_t *__restrict __dest,
570 const wchar_t *__restrict __src) __THROW;
571
572/* Copy no more than N characters of SRC to DEST, returning the address of
573 the last character written into DEST. */
574extern wchar_t *wcpncpy (wchar_t *__restrict __dest,
575 const wchar_t *__restrict __src, size_t __n)
576 __THROW;
577
578
579/* Wide character I/O functions. */
580
581/* Like OPEN_MEMSTREAM, but the stream is wide oriented and produces
582 a wide character string. */
583extern __FILE *open_wmemstream (wchar_t **__bufloc, size_t *__sizeloc) __THROW;
584#endif
585
586#if defined __USE_ISOC95 || defined __USE_UNIX98
587__BEGIN_NAMESPACE_STD
588
589/* Select orientation for stream. */
590extern int fwide (__FILE *__fp, int __mode) __THROW;
591
592
593/* Write formatted output to STREAM.
594
595 This function is a possible cancellation point and therefore not
596 marked with __THROW. */
597extern int fwprintf (__FILE *__restrict __stream,
598 const wchar_t *__restrict __format, ...)
599 /* __attribute__ ((__format__ (__wprintf__, 2, 3))) */;
600/* Write formatted output to stdout.
601
602 This function is a possible cancellation point and therefore not
603 marked with __THROW. */
604extern int wprintf (const wchar_t *__restrict __format, ...)
605 /* __attribute__ ((__format__ (__wprintf__, 1, 2))) */;
606/* Write formatted output of at most N characters to S. */
607extern int swprintf (wchar_t *__restrict __s, size_t __n,
608 const wchar_t *__restrict __format, ...)
609 __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 4))) */;
610
611/* Write formatted output to S from argument list ARG.
612
613 This function is a possible cancellation point and therefore not
614 marked with __THROW. */
615extern int vfwprintf (__FILE *__restrict __s,
616 const wchar_t *__restrict __format,
617 __gnuc_va_list __arg)
618 /* __attribute__ ((__format__ (__wprintf__, 2, 0))) */;
619/* Write formatted output to stdout from argument list ARG.
620
621 This function is a possible cancellation point and therefore not
622 marked with __THROW. */
623extern int vwprintf (const wchar_t *__restrict __format,
624 __gnuc_va_list __arg)
625 /* __attribute__ ((__format__ (__wprintf__, 1, 0))) */;
626/* Write formatted output of at most N character to S from argument
627 list ARG. */
628extern int vswprintf (wchar_t *__restrict __s, size_t __n,
629 const wchar_t *__restrict __format,
630 __gnuc_va_list __arg)
631 __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */;
632
633
634/* Read formatted input from STREAM.
635
636 This function is a possible cancellation point and therefore not
637 marked with __THROW. */
638extern int fwscanf (__FILE *__restrict __stream,
639 const wchar_t *__restrict __format, ...)
640 /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
641/* Read formatted input from stdin.
642
643 This function is a possible cancellation point and therefore not
644 marked with __THROW. */
645extern int wscanf (const wchar_t *__restrict __format, ...)
646 /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;
647/* Read formatted input from S. */
648extern int swscanf (const wchar_t *__restrict __s,
649 const wchar_t *__restrict __format, ...)
650 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
651
652# if defined __USE_ISOC99 && !defined __USE_GNU \
653 && (!defined __LDBL_COMPAT || !defined __REDIRECT) \
654 && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K)
655# ifdef __REDIRECT
656/* For strict ISO C99 or POSIX compliance disallow %as, %aS and %a[
657 GNU extension which conflicts with valid %a followed by letter
658 s, S or [. */
659extern int __REDIRECT (fwscanf, (__FILE *__restrict __stream,
660 const wchar_t *__restrict __format, ...),
661 __isoc99_fwscanf)
662 /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
663extern int __REDIRECT (wscanf, (const wchar_t *__restrict __format, ...),
664 __isoc99_wscanf)
665 /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;
666extern int __REDIRECT_NTH (swscanf, (const wchar_t *__restrict __s,
667 const wchar_t *__restrict __format,
668 ...), __isoc99_swscanf)
669 /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
670# else
671extern int __isoc99_fwscanf (__FILE *__restrict __stream,
672 const wchar_t *__restrict __format, ...);
673extern int __isoc99_wscanf (const wchar_t *__restrict __format, ...);
674extern int __isoc99_swscanf (const wchar_t *__restrict __s,
675 const wchar_t *__restrict __format, ...)
676 __THROW;
677# define fwscanf __isoc99_fwscanf
678# define wscanf __isoc99_wscanf
679# define swscanf __isoc99_swscanf
680# endif
681# endif
682
683__END_NAMESPACE_STD
684#endif /* Use ISO C95, C99 and Unix98. */
685
686#ifdef __USE_ISOC99
687__BEGIN_NAMESPACE_C99
688/* Read formatted input from S into argument list ARG.
689
690 This function is a possible cancellation point and therefore not
691 marked with __THROW. */
692extern int vfwscanf (__FILE *__restrict __s,
693 const wchar_t *__restrict __format,
694 __gnuc_va_list __arg)
695 /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
696/* Read formatted input from stdin into argument list ARG.
697
698 This function is a possible cancellation point and therefore not
699 marked with __THROW. */
700extern int vwscanf (const wchar_t *__restrict __format,
701 __gnuc_va_list __arg)
702 /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */;
703/* Read formatted input from S into argument list ARG. */
704extern int vswscanf (const wchar_t *__restrict __s,
705 const wchar_t *__restrict __format,
706 __gnuc_va_list __arg)
707 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
708
709# if !defined __USE_GNU \
710 && (!defined __LDBL_COMPAT || !defined __REDIRECT) \
711 && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K)
712# ifdef __REDIRECT
713extern int __REDIRECT (vfwscanf, (__FILE *__restrict __s,
714 const wchar_t *__restrict __format,
715 __gnuc_va_list __arg), __isoc99_vfwscanf)
716 /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
717extern int __REDIRECT (vwscanf, (const wchar_t *__restrict __format,
718 __gnuc_va_list __arg), __isoc99_vwscanf)
719 /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */;
720extern int __REDIRECT_NTH (vswscanf, (const wchar_t *__restrict __s,
721 const wchar_t *__restrict __format,
722 __gnuc_va_list __arg), __isoc99_vswscanf)
723 /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
724# else
725extern int __isoc99_vfwscanf (__FILE *__restrict __s,
726 const wchar_t *__restrict __format,
727 __gnuc_va_list __arg);
728extern int __isoc99_vwscanf (const wchar_t *__restrict __format,
729 __gnuc_va_list __arg);
730extern int __isoc99_vswscanf (const wchar_t *__restrict __s,
731 const wchar_t *__restrict __format,
732 __gnuc_va_list __arg) __THROW;
733# define vfwscanf __isoc99_vfwscanf
734# define vwscanf __isoc99_vwscanf
735# define vswscanf __isoc99_vswscanf
736# endif
737# endif
738
739__END_NAMESPACE_C99
740#endif /* Use ISO C99. */
741
742
743__BEGIN_NAMESPACE_STD
744/* Read a character from STREAM.
745
746 These functions are possible cancellation points and therefore not
747 marked with __THROW. */
748extern wint_t fgetwc (__FILE *__stream);
749extern wint_t getwc (__FILE *__stream);
750
751/* Read a character from stdin.
752
753 This function is a possible cancellation point and therefore not
754 marked with __THROW. */
755extern wint_t getwchar (void);
756
757
758/* Write a character to STREAM.
759
760 These functions are possible cancellation points and therefore not
761 marked with __THROW. */
762extern wint_t fputwc (wchar_t __wc, __FILE *__stream);
763extern wint_t putwc (wchar_t __wc, __FILE *__stream);
764
765/* Write a character to stdout.
766
767 This function is a possible cancellation point and therefore not
768 marked with __THROW. */
769extern wint_t putwchar (wchar_t __wc);
770
771
772/* Get a newline-terminated wide character string of finite length
773 from STREAM.
774
775 This function is a possible cancellation point and therefore not
776 marked with __THROW. */
777extern wchar_t *fgetws (wchar_t *__restrict __ws, int __n,
778 __FILE *__restrict __stream);
779
780/* Write a string to STREAM.
781
782 This function is a possible cancellation point and therefore not
783 marked with __THROW. */
784extern int fputws (const wchar_t *__restrict __ws,
785 __FILE *__restrict __stream);
786
787
788/* Push a character back onto the input buffer of STREAM.
789
790 This function is a possible cancellation point and therefore not
791 marked with __THROW. */
792extern wint_t ungetwc (wint_t __wc, __FILE *__stream);
793__END_NAMESPACE_STD
794
795
796#ifdef __USE_GNU
797/* These are defined to be equivalent to the `char' functions defined
798 in POSIX.1:1996.
799
800 These functions are not part of POSIX and therefore no official
801 cancellation point. But due to similarity with an POSIX interface
802 or due to the implementation they are cancellation points and
803 therefore not marked with __THROW. */
804extern wint_t getwc_unlocked (__FILE *__stream);
805extern wint_t getwchar_unlocked (void);
806
807/* This is the wide character version of a GNU extension.
808
809 This function is not part of POSIX and therefore no official
810 cancellation point. But due to similarity with an POSIX interface
811 or due to the implementation it is a cancellation point and
812 therefore not marked with __THROW. */
813extern wint_t fgetwc_unlocked (__FILE *__stream);
814
815/* Faster version when locking is not necessary.
816
817 This function is not part of POSIX and therefore no official
818 cancellation point. But due to similarity with an POSIX interface
819 or due to the implementation it is a cancellation point and
820 therefore not marked with __THROW. */
821extern wint_t fputwc_unlocked (wchar_t __wc, __FILE *__stream);
822
823/* These are defined to be equivalent to the `char' functions defined
824 in POSIX.1:1996.
825
826 These functions are not part of POSIX and therefore no official
827 cancellation point. But due to similarity with an POSIX interface
828 or due to the implementation they are cancellation points and
829 therefore not marked with __THROW. */
830extern wint_t putwc_unlocked (wchar_t __wc, __FILE *__stream);
831extern wint_t putwchar_unlocked (wchar_t __wc);
832
833
834/* This function does the same as `fgetws' but does not lock the stream.
835
836 This function is not part of POSIX and therefore no official
837 cancellation point. But due to similarity with an POSIX interface
838 or due to the implementation it is a cancellation point and
839 therefore not marked with __THROW. */
840extern wchar_t *fgetws_unlocked (wchar_t *__restrict __ws, int __n,
841 __FILE *__restrict __stream);
842
843/* This function does the same as `fputws' but does not lock the stream.
844
845 This function is not part of POSIX and therefore no official
846 cancellation point. But due to similarity with an POSIX interface
847 or due to the implementation it is a cancellation point and
848 therefore not marked with __THROW. */
849extern int fputws_unlocked (const wchar_t *__restrict __ws,
850 __FILE *__restrict __stream);
851#endif
852
853
854__BEGIN_NAMESPACE_C99
855/* Format TP into S according to FORMAT.
856 Write no more than MAXSIZE wide characters and return the number
857 of wide characters written, or 0 if it would exceed MAXSIZE. */
858extern size_t wcsftime (wchar_t *__restrict __s, size_t __maxsize,
859 const wchar_t *__restrict __format,
860 const struct tm *__restrict __tp) __THROW;
861__END_NAMESPACE_C99
862
863# ifdef __USE_GNU
864# include <xlocale.h>
865
866/* Similar to `wcsftime' but takes the information from
867 the provided locale and not the global locale. */
868extern size_t wcsftime_l (wchar_t *__restrict __s, size_t __maxsize,
869 const wchar_t *__restrict __format,
870 const struct tm *__restrict __tp,
871 __locale_t __loc) __THROW;
872# endif
873
874/* The X/Open standard demands that most of the functions defined in
875 the <wctype.h> header must also appear here. This is probably
876 because some X/Open members wrote their implementation before the
877 ISO C standard was published and introduced the better solution.
878 We have to provide these definitions for compliance reasons but we
879 do this nonsense only if really necessary. */
880#if defined __USE_UNIX98 && !defined __USE_GNU
881# define __need_iswxxx
882# include <wctype.h>
883#endif
884
885/* Define some macros helping to catch buffer overflows. */
886#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function
887# include <bits/wchar2.h>
888#endif
889
890#ifdef __LDBL_COMPAT
891# include <bits/wchar-ldbl.h>
892#endif
893
894__END_DECLS
895
896#endif /* _WCHAR_H defined */
897
898#endif /* wchar.h */
899
900/* Undefine all __need_* constants in case we are included to get those
901 constants but the whole file was already read. */
902#undef __need_mbstate_t
903#undef __need_wint_t
904