1/* Copyright (C) 1995-2020 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 <https://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#define _WCHAR_H 1
25
26#define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION
27#include <bits/libc-header-start.h>
28
29/* Gather machine dependent type support. */
30#include <bits/floatn.h>
31
32#define __need_size_t
33#define __need_wchar_t
34#define __need_NULL
35#include <stddef.h>
36
37#define __need___va_list
38#include <stdarg.h>
39
40#include <bits/wchar.h>
41#include <bits/types/wint_t.h>
42#include <bits/types/mbstate_t.h>
43#include <bits/types/__FILE.h>
44
45#if defined __USE_UNIX98 || defined __USE_XOPEN2K
46# include <bits/types/FILE.h>
47#endif
48#ifdef __USE_XOPEN2K8
49# include <bits/types/locale_t.h>
50#endif
51
52/* Tell the caller that we provide correct C++ prototypes. */
53#if defined __cplusplus && __GNUC_PREREQ (4, 4)
54# define __CORRECT_ISO_CPP_WCHAR_H_PROTO
55#endif
56
57#ifndef WCHAR_MIN
58/* These constants might also be defined in <inttypes.h>. */
59# define WCHAR_MIN __WCHAR_MIN
60# define WCHAR_MAX __WCHAR_MAX
61#endif
62
63#ifndef WEOF
64# define WEOF (0xffffffffu)
65#endif
66
67/* All versions of XPG prior to the publication of ISO C99 required
68 the bulk of <wctype.h>'s declarations to appear in this header
69 (because <wctype.h> did not exist prior to C99). In POSIX.1-2001
70 those declarations were marked as XSI extensions; in -2008 they
71 were additionally marked as obsolescent. _GNU_SOURCE mode
72 anticipates the removal of these declarations in the next revision
73 of POSIX. */
74#if (defined __USE_XOPEN && !defined __USE_GNU \
75 && !(defined __USE_XOPEN2K && !defined __USE_XOPEN2KXSI))
76# include <bits/wctype-wchar.h>
77#endif
78
79__BEGIN_DECLS
80
81/* This incomplete type is defined in <time.h> but needed here because
82 of `wcsftime'. */
83struct tm;
84
85
86/* Copy SRC to DEST. */
87extern wchar_t *wcscpy (wchar_t *__restrict __dest,
88 const wchar_t *__restrict __src)
89 __THROW __nonnull ((1, 2));
90
91/* Copy no more than N wide-characters of SRC to DEST. */
92extern wchar_t *wcsncpy (wchar_t *__restrict __dest,
93 const wchar_t *__restrict __src, size_t __n)
94 __THROW __nonnull ((1, 2));
95
96/* Append SRC onto DEST. */
97extern wchar_t *wcscat (wchar_t *__restrict __dest,
98 const wchar_t *__restrict __src)
99 __THROW __nonnull ((1, 2));
100/* Append no more than N wide-characters of SRC onto DEST. */
101extern wchar_t *wcsncat (wchar_t *__restrict __dest,
102 const wchar_t *__restrict __src, size_t __n)
103 __THROW __nonnull ((1, 2));
104
105/* Compare S1 and S2. */
106extern int wcscmp (const wchar_t *__s1, const wchar_t *__s2)
107 __THROW __attribute_pure__ __nonnull ((1, 2));
108/* Compare N wide-characters of S1 and S2. */
109extern int wcsncmp (const wchar_t *__s1, const wchar_t *__s2, size_t __n)
110 __THROW __attribute_pure__ __nonnull ((1, 2));
111
112#ifdef __USE_XOPEN2K8
113/* Compare S1 and S2, ignoring case. */
114extern int wcscasecmp (const wchar_t *__s1, const wchar_t *__s2) __THROW;
115
116/* Compare no more than N chars of S1 and S2, ignoring case. */
117extern int wcsncasecmp (const wchar_t *__s1, const wchar_t *__s2,
118 size_t __n) __THROW;
119
120/* Similar to the two functions above but take the information from
121 the provided locale and not the global locale. */
122extern int wcscasecmp_l (const wchar_t *__s1, const wchar_t *__s2,
123 locale_t __loc) __THROW;
124
125extern int wcsncasecmp_l (const wchar_t *__s1, const wchar_t *__s2,
126 size_t __n, locale_t __loc) __THROW;
127#endif
128
129/* Compare S1 and S2, both interpreted as appropriate to the
130 LC_COLLATE category of the current locale. */
131extern int wcscoll (const wchar_t *__s1, const wchar_t *__s2) __THROW;
132/* Transform S2 into array pointed to by S1 such that if wcscmp is
133 applied to two transformed strings the result is the as applying
134 `wcscoll' to the original strings. */
135extern size_t wcsxfrm (wchar_t *__restrict __s1,
136 const wchar_t *__restrict __s2, size_t __n) __THROW;
137
138#ifdef __USE_XOPEN2K8
139/* Similar to the two functions above but take the information from
140 the provided locale and not the global locale. */
141
142/* Compare S1 and S2, both interpreted as appropriate to the
143 LC_COLLATE category of the given locale. */
144extern int wcscoll_l (const wchar_t *__s1, const wchar_t *__s2,
145 locale_t __loc) __THROW;
146
147/* Transform S2 into array pointed to by S1 such that if wcscmp is
148 applied to two transformed strings the result is the as applying
149 `wcscoll' to the original strings. */
150extern size_t wcsxfrm_l (wchar_t *__s1, const wchar_t *__s2,
151 size_t __n, locale_t __loc) __THROW;
152
153/* Duplicate S, returning an identical malloc'd string. */
154extern wchar_t *wcsdup (const wchar_t *__s) __THROW __attribute_malloc__;
155#endif
156
157/* Find the first occurrence of WC in WCS. */
158#ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO
159extern "C++" wchar_t *wcschr (wchar_t *__wcs, wchar_t __wc)
160 __THROW __asm ("wcschr") __attribute_pure__;
161extern "C++" const wchar_t *wcschr (const wchar_t *__wcs, wchar_t __wc)
162 __THROW __asm ("wcschr") __attribute_pure__;
163#else
164extern wchar_t *wcschr (const wchar_t *__wcs, wchar_t __wc)
165 __THROW __attribute_pure__;
166#endif
167/* Find the last occurrence of WC in WCS. */
168#ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO
169extern "C++" wchar_t *wcsrchr (wchar_t *__wcs, wchar_t __wc)
170 __THROW __asm ("wcsrchr") __attribute_pure__;
171extern "C++" const wchar_t *wcsrchr (const wchar_t *__wcs, wchar_t __wc)
172 __THROW __asm ("wcsrchr") __attribute_pure__;
173#else
174extern wchar_t *wcsrchr (const wchar_t *__wcs, wchar_t __wc)
175 __THROW __attribute_pure__;
176#endif
177
178#ifdef __USE_GNU
179/* This function is similar to `wcschr'. But it returns a pointer to
180 the closing NUL wide character in case C is not found in S. */
181extern wchar_t *wcschrnul (const wchar_t *__s, wchar_t __wc)
182 __THROW __attribute_pure__;
183#endif
184
185/* Return the length of the initial segmet of WCS which
186 consists entirely of wide characters not in REJECT. */
187extern size_t wcscspn (const wchar_t *__wcs, const wchar_t *__reject)
188 __THROW __attribute_pure__;
189/* Return the length of the initial segmet of WCS which
190 consists entirely of wide characters in ACCEPT. */
191extern size_t wcsspn (const wchar_t *__wcs, const wchar_t *__accept)
192 __THROW __attribute_pure__;
193/* Find the first occurrence in WCS of any character in ACCEPT. */
194#ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO
195extern "C++" wchar_t *wcspbrk (wchar_t *__wcs, const wchar_t *__accept)
196 __THROW __asm ("wcspbrk") __attribute_pure__;
197extern "C++" const wchar_t *wcspbrk (const wchar_t *__wcs,
198 const wchar_t *__accept)
199 __THROW __asm ("wcspbrk") __attribute_pure__;
200#else
201extern wchar_t *wcspbrk (const wchar_t *__wcs, const wchar_t *__accept)
202 __THROW __attribute_pure__;
203#endif
204/* Find the first occurrence of NEEDLE in HAYSTACK. */
205#ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO
206extern "C++" wchar_t *wcsstr (wchar_t *__haystack, const wchar_t *__needle)
207 __THROW __asm ("wcsstr") __attribute_pure__;
208extern "C++" const wchar_t *wcsstr (const wchar_t *__haystack,
209 const wchar_t *__needle)
210 __THROW __asm ("wcsstr") __attribute_pure__;
211#else
212extern wchar_t *wcsstr (const wchar_t *__haystack, const wchar_t *__needle)
213 __THROW __attribute_pure__;
214#endif
215
216/* Divide WCS into tokens separated by characters in DELIM. */
217extern wchar_t *wcstok (wchar_t *__restrict __s,
218 const wchar_t *__restrict __delim,
219 wchar_t **__restrict __ptr) __THROW;
220
221/* Return the number of wide characters in S. */
222extern size_t wcslen (const wchar_t *__s) __THROW __attribute_pure__;
223
224#ifdef __USE_XOPEN
225/* Another name for `wcsstr' from XPG4. */
226# ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO
227extern "C++" wchar_t *wcswcs (wchar_t *__haystack, const wchar_t *__needle)
228 __THROW __asm ("wcswcs") __attribute_pure__;
229extern "C++" const wchar_t *wcswcs (const wchar_t *__haystack,
230 const wchar_t *__needle)
231 __THROW __asm ("wcswcs") __attribute_pure__;
232# else
233extern wchar_t *wcswcs (const wchar_t *__haystack, const wchar_t *__needle)
234 __THROW __attribute_pure__;
235# endif
236#endif
237
238#ifdef __USE_XOPEN2K8
239/* Return the number of wide characters in S, but at most MAXLEN. */
240extern size_t wcsnlen (const wchar_t *__s, size_t __maxlen)
241 __THROW __attribute_pure__;
242#endif
243
244
245/* Search N wide characters of S for C. */
246#ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO
247extern "C++" wchar_t *wmemchr (wchar_t *__s, wchar_t __c, size_t __n)
248 __THROW __asm ("wmemchr") __attribute_pure__;
249extern "C++" const wchar_t *wmemchr (const wchar_t *__s, wchar_t __c,
250 size_t __n)
251 __THROW __asm ("wmemchr") __attribute_pure__;
252#else
253extern wchar_t *wmemchr (const wchar_t *__s, wchar_t __c, size_t __n)
254 __THROW __attribute_pure__;
255#endif
256
257/* Compare N wide characters of S1 and S2. */
258extern int wmemcmp (const wchar_t *__s1, const wchar_t *__s2, size_t __n)
259 __THROW __attribute_pure__;
260
261/* Copy N wide characters of SRC to DEST. */
262extern wchar_t *wmemcpy (wchar_t *__restrict __s1,
263 const wchar_t *__restrict __s2, size_t __n) __THROW;
264
265/* Copy N wide characters of SRC to DEST, guaranteeing
266 correct behavior for overlapping strings. */
267extern wchar_t *wmemmove (wchar_t *__s1, const wchar_t *__s2, size_t __n)
268 __THROW;
269
270/* Set N wide characters of S to C. */
271extern wchar_t *wmemset (wchar_t *__s, wchar_t __c, size_t __n) __THROW;
272
273#ifdef __USE_GNU
274/* Copy N wide characters of SRC to DEST and return pointer to following
275 wide character. */
276extern wchar_t *wmempcpy (wchar_t *__restrict __s1,
277 const wchar_t *__restrict __s2, size_t __n)
278 __THROW;
279#endif
280
281
282/* Determine whether C constitutes a valid (one-byte) multibyte
283 character. */
284extern wint_t btowc (int __c) __THROW;
285
286/* Determine whether C corresponds to a member of the extended
287 character set whose multibyte representation is a single byte. */
288extern int wctob (wint_t __c) __THROW;
289
290/* Determine whether PS points to an object representing the initial
291 state. */
292extern int mbsinit (const mbstate_t *__ps) __THROW __attribute_pure__;
293
294/* Write wide character representation of multibyte character pointed
295 to by S to PWC. */
296extern size_t mbrtowc (wchar_t *__restrict __pwc,
297 const char *__restrict __s, size_t __n,
298 mbstate_t *__restrict __p) __THROW;
299
300/* Write multibyte representation of wide character WC to S. */
301extern size_t wcrtomb (char *__restrict __s, wchar_t __wc,
302 mbstate_t *__restrict __ps) __THROW;
303
304/* Return number of bytes in multibyte character pointed to by S. */
305extern size_t __mbrlen (const char *__restrict __s, size_t __n,
306 mbstate_t *__restrict __ps) __THROW;
307extern size_t mbrlen (const char *__restrict __s, size_t __n,
308 mbstate_t *__restrict __ps) __THROW;
309
310#ifdef __USE_EXTERN_INLINES
311/* Define inline function as optimization. */
312
313/* We can use the BTOWC and WCTOB optimizations since we know that all
314 locales must use ASCII encoding for the values in the ASCII range
315 and because the wchar_t encoding is always ISO 10646. */
316extern wint_t __btowc_alias (int __c) __asm ("btowc");
317__extern_inline wint_t
318__NTH (btowc (int __c))
319{ return (__builtin_constant_p (__c) && __c >= '\0' && __c <= '\x7f'
320 ? (wint_t) __c : __btowc_alias (__c)); }
321
322extern int __wctob_alias (wint_t __c) __asm ("wctob");
323__extern_inline int
324__NTH (wctob (wint_t __wc))
325{ return (__builtin_constant_p (__wc) && __wc >= L'\0' && __wc <= L'\x7f'
326 ? (int) __wc : __wctob_alias (__wc)); }
327
328__extern_inline size_t
329__NTH (mbrlen (const char *__restrict __s, size_t __n,
330 mbstate_t *__restrict __ps))
331{ return (__ps != NULL
332 ? mbrtowc (NULL, __s, __n, __ps) : __mbrlen (__s, __n, NULL)); }
333#endif
334
335/* Write wide character representation of multibyte character string
336 SRC to DST. */
337extern size_t mbsrtowcs (wchar_t *__restrict __dst,
338 const char **__restrict __src, size_t __len,
339 mbstate_t *__restrict __ps) __THROW;
340
341/* Write multibyte character representation of wide character string
342 SRC to DST. */
343extern size_t wcsrtombs (char *__restrict __dst,
344 const wchar_t **__restrict __src, size_t __len,
345 mbstate_t *__restrict __ps) __THROW;
346
347
348#ifdef __USE_XOPEN2K8
349/* Write wide character representation of at most NMC bytes of the
350 multibyte character string SRC to DST. */
351extern size_t mbsnrtowcs (wchar_t *__restrict __dst,
352 const char **__restrict __src, size_t __nmc,
353 size_t __len, mbstate_t *__restrict __ps) __THROW;
354
355/* Write multibyte character representation of at most NWC characters
356 from the wide character string SRC to DST. */
357extern size_t wcsnrtombs (char *__restrict __dst,
358 const wchar_t **__restrict __src,
359 size_t __nwc, size_t __len,
360 mbstate_t *__restrict __ps) __THROW;
361#endif /* use POSIX 2008 */
362
363
364/* The following functions are extensions found in X/Open CAE. */
365#ifdef __USE_XOPEN
366/* Determine number of column positions required for C. */
367extern int wcwidth (wchar_t __c) __THROW;
368
369/* Determine number of column positions required for first N wide
370 characters (or fewer if S ends before this) in S. */
371extern int wcswidth (const wchar_t *__s, size_t __n) __THROW;
372#endif /* Use X/Open. */
373
374
375/* Convert initial portion of the wide string NPTR to `double'
376 representation. */
377extern double wcstod (const wchar_t *__restrict __nptr,
378 wchar_t **__restrict __endptr) __THROW;
379
380#ifdef __USE_ISOC99
381/* Likewise for `float' and `long double' sizes of floating-point numbers. */
382extern float wcstof (const wchar_t *__restrict __nptr,
383 wchar_t **__restrict __endptr) __THROW;
384extern long double wcstold (const wchar_t *__restrict __nptr,
385 wchar_t **__restrict __endptr) __THROW;
386#endif /* C99 */
387
388/* Likewise for `_FloatN' and `_FloatNx' when support is enabled. */
389
390#if __HAVE_FLOAT16 && defined __USE_GNU
391extern _Float16 wcstof16 (const wchar_t *__restrict __nptr,
392 wchar_t **__restrict __endptr) __THROW;
393#endif
394
395#if __HAVE_FLOAT32 && defined __USE_GNU
396extern _Float32 wcstof32 (const wchar_t *__restrict __nptr,
397 wchar_t **__restrict __endptr) __THROW;
398#endif
399
400#if __HAVE_FLOAT64 && defined __USE_GNU
401extern _Float64 wcstof64 (const wchar_t *__restrict __nptr,
402 wchar_t **__restrict __endptr) __THROW;
403#endif
404
405#if __HAVE_FLOAT128 && defined __USE_GNU
406extern _Float128 wcstof128 (const wchar_t *__restrict __nptr,
407 wchar_t **__restrict __endptr) __THROW;
408#endif
409
410#if __HAVE_FLOAT32X && defined __USE_GNU
411extern _Float32x wcstof32x (const wchar_t *__restrict __nptr,
412 wchar_t **__restrict __endptr) __THROW;
413#endif
414
415#if __HAVE_FLOAT64X && defined __USE_GNU
416extern _Float64x wcstof64x (const wchar_t *__restrict __nptr,
417 wchar_t **__restrict __endptr) __THROW;
418#endif
419
420#if __HAVE_FLOAT128X && defined __USE_GNU
421extern _Float128x wcstof128x (const wchar_t *__restrict __nptr,
422 wchar_t **__restrict __endptr) __THROW;
423#endif
424
425
426/* Convert initial portion of wide string NPTR to `long int'
427 representation. */
428extern long int wcstol (const wchar_t *__restrict __nptr,
429 wchar_t **__restrict __endptr, int __base) __THROW;
430
431/* Convert initial portion of wide string NPTR to `unsigned long int'
432 representation. */
433extern unsigned long int wcstoul (const wchar_t *__restrict __nptr,
434 wchar_t **__restrict __endptr, int __base)
435 __THROW;
436
437#ifdef __USE_ISOC99
438/* Convert initial portion of wide string NPTR to `long long int'
439 representation. */
440__extension__
441extern long long int wcstoll (const wchar_t *__restrict __nptr,
442 wchar_t **__restrict __endptr, int __base)
443 __THROW;
444
445/* Convert initial portion of wide string NPTR to `unsigned long long int'
446 representation. */
447__extension__
448extern unsigned long long int wcstoull (const wchar_t *__restrict __nptr,
449 wchar_t **__restrict __endptr,
450 int __base) __THROW;
451#endif /* ISO C99. */
452
453#ifdef __USE_GNU
454/* Convert initial portion of wide string NPTR to `long long int'
455 representation. */
456__extension__
457extern long long int wcstoq (const wchar_t *__restrict __nptr,
458 wchar_t **__restrict __endptr, int __base)
459 __THROW;
460
461/* Convert initial portion of wide string NPTR to `unsigned long long int'
462 representation. */
463__extension__
464extern unsigned long long int wcstouq (const wchar_t *__restrict __nptr,
465 wchar_t **__restrict __endptr,
466 int __base) __THROW;
467#endif /* Use GNU. */
468
469#ifdef __USE_GNU
470/* Parallel versions of the functions above which take the locale to
471 use as an additional parameter. These are GNU extensions inspired
472 by the POSIX.1-2008 extended locale API. */
473extern long int wcstol_l (const wchar_t *__restrict __nptr,
474 wchar_t **__restrict __endptr, int __base,
475 locale_t __loc) __THROW;
476
477extern unsigned long int wcstoul_l (const wchar_t *__restrict __nptr,
478 wchar_t **__restrict __endptr,
479 int __base, locale_t __loc) __THROW;
480
481__extension__
482extern long long int wcstoll_l (const wchar_t *__restrict __nptr,
483 wchar_t **__restrict __endptr,
484 int __base, locale_t __loc) __THROW;
485
486__extension__
487extern unsigned long long int wcstoull_l (const wchar_t *__restrict __nptr,
488 wchar_t **__restrict __endptr,
489 int __base, locale_t __loc)
490 __THROW;
491
492extern double wcstod_l (const wchar_t *__restrict __nptr,
493 wchar_t **__restrict __endptr, locale_t __loc)
494 __THROW;
495
496extern float wcstof_l (const wchar_t *__restrict __nptr,
497 wchar_t **__restrict __endptr, locale_t __loc)
498 __THROW;
499
500extern long double wcstold_l (const wchar_t *__restrict __nptr,
501 wchar_t **__restrict __endptr,
502 locale_t __loc) __THROW;
503
504# if __HAVE_FLOAT16
505extern _Float16 wcstof16_l (const wchar_t *__restrict __nptr,
506 wchar_t **__restrict __endptr,
507 locale_t __loc) __THROW;
508# endif
509
510# if __HAVE_FLOAT32
511extern _Float32 wcstof32_l (const wchar_t *__restrict __nptr,
512 wchar_t **__restrict __endptr,
513 locale_t __loc) __THROW;
514# endif
515
516# if __HAVE_FLOAT64
517extern _Float64 wcstof64_l (const wchar_t *__restrict __nptr,
518 wchar_t **__restrict __endptr,
519 locale_t __loc) __THROW;
520# endif
521
522# if __HAVE_FLOAT128
523extern _Float128 wcstof128_l (const wchar_t *__restrict __nptr,
524 wchar_t **__restrict __endptr,
525 locale_t __loc) __THROW;
526# endif
527
528# if __HAVE_FLOAT32X
529extern _Float32x wcstof32x_l (const wchar_t *__restrict __nptr,
530 wchar_t **__restrict __endptr,
531 locale_t __loc) __THROW;
532# endif
533
534# if __HAVE_FLOAT64X
535extern _Float64x wcstof64x_l (const wchar_t *__restrict __nptr,
536 wchar_t **__restrict __endptr,
537 locale_t __loc) __THROW;
538# endif
539
540# if __HAVE_FLOAT128X
541extern _Float128x wcstof128x_l (const wchar_t *__restrict __nptr,
542 wchar_t **__restrict __endptr,
543 locale_t __loc) __THROW;
544# endif
545#endif /* use GNU */
546
547
548#ifdef __USE_XOPEN2K8
549/* Copy SRC to DEST, returning the address of the terminating L'\0' in
550 DEST. */
551extern wchar_t *wcpcpy (wchar_t *__restrict __dest,
552 const wchar_t *__restrict __src) __THROW;
553
554/* Copy no more than N characters of SRC to DEST, returning the address of
555 the last character written into DEST. */
556extern wchar_t *wcpncpy (wchar_t *__restrict __dest,
557 const wchar_t *__restrict __src, size_t __n)
558 __THROW;
559#endif
560
561
562/* Wide character I/O functions. */
563
564#if defined __USE_XOPEN2K8 || __GLIBC_USE (LIB_EXT2)
565/* Like OPEN_MEMSTREAM, but the stream is wide oriented and produces
566 a wide character string. */
567extern __FILE *open_wmemstream (wchar_t **__bufloc, size_t *__sizeloc) __THROW;
568#endif
569
570#if defined __USE_ISOC95 || defined __USE_UNIX98
571
572/* Select orientation for stream. */
573extern int fwide (__FILE *__fp, int __mode) __THROW;
574
575
576/* Write formatted output to STREAM.
577
578 This function is a possible cancellation point and therefore not
579 marked with __THROW. */
580extern int fwprintf (__FILE *__restrict __stream,
581 const wchar_t *__restrict __format, ...)
582 /* __attribute__ ((__format__ (__wprintf__, 2, 3))) */;
583/* Write formatted output to stdout.
584
585 This function is a possible cancellation point and therefore not
586 marked with __THROW. */
587extern int wprintf (const wchar_t *__restrict __format, ...)
588 /* __attribute__ ((__format__ (__wprintf__, 1, 2))) */;
589/* Write formatted output of at most N characters to S. */
590extern int swprintf (wchar_t *__restrict __s, size_t __n,
591 const wchar_t *__restrict __format, ...)
592 __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 4))) */;
593
594/* Write formatted output to S from argument list ARG.
595
596 This function is a possible cancellation point and therefore not
597 marked with __THROW. */
598extern int vfwprintf (__FILE *__restrict __s,
599 const wchar_t *__restrict __format,
600 __gnuc_va_list __arg)
601 /* __attribute__ ((__format__ (__wprintf__, 2, 0))) */;
602/* Write formatted output to stdout from argument list ARG.
603
604 This function is a possible cancellation point and therefore not
605 marked with __THROW. */
606extern int vwprintf (const wchar_t *__restrict __format,
607 __gnuc_va_list __arg)
608 /* __attribute__ ((__format__ (__wprintf__, 1, 0))) */;
609/* Write formatted output of at most N character to S from argument
610 list ARG. */
611extern int vswprintf (wchar_t *__restrict __s, size_t __n,
612 const wchar_t *__restrict __format,
613 __gnuc_va_list __arg)
614 __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */;
615
616
617/* Read formatted input from STREAM.
618
619 This function is a possible cancellation point and therefore not
620 marked with __THROW. */
621extern int fwscanf (__FILE *__restrict __stream,
622 const wchar_t *__restrict __format, ...)
623 /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
624/* Read formatted input from stdin.
625
626 This function is a possible cancellation point and therefore not
627 marked with __THROW. */
628extern int wscanf (const wchar_t *__restrict __format, ...)
629 /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;
630/* Read formatted input from S. */
631extern int swscanf (const wchar_t *__restrict __s,
632 const wchar_t *__restrict __format, ...)
633 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
634
635/* For historical reasons, the C99-compliant versions of the scanf
636 functions are at alternative names. When __LDBL_COMPAT or
637 __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI are in effect, this is handled in
638 bits/wchar-ldbl.h. */
639#if !__GLIBC_USE (DEPRECATED_SCANF) && !defined __LDBL_COMPAT \
640 && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 0
641# ifdef __REDIRECT
642extern int __REDIRECT (fwscanf, (__FILE *__restrict __stream,
643 const wchar_t *__restrict __format, ...),
644 __isoc99_fwscanf)
645 /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
646extern int __REDIRECT (wscanf, (const wchar_t *__restrict __format, ...),
647 __isoc99_wscanf)
648 /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;
649extern int __REDIRECT_NTH (swscanf, (const wchar_t *__restrict __s,
650 const wchar_t *__restrict __format,
651 ...), __isoc99_swscanf)
652 /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
653# else
654extern int __isoc99_fwscanf (__FILE *__restrict __stream,
655 const wchar_t *__restrict __format, ...);
656extern int __isoc99_wscanf (const wchar_t *__restrict __format, ...);
657extern int __isoc99_swscanf (const wchar_t *__restrict __s,
658 const wchar_t *__restrict __format, ...)
659 __THROW;
660# define fwscanf __isoc99_fwscanf
661# define wscanf __isoc99_wscanf
662# define swscanf __isoc99_swscanf
663# endif
664# endif
665
666#endif /* Use ISO C95, C99 and Unix98. */
667
668#ifdef __USE_ISOC99
669/* Read formatted input from S into argument list ARG.
670
671 This function is a possible cancellation point and therefore not
672 marked with __THROW. */
673extern int vfwscanf (__FILE *__restrict __s,
674 const wchar_t *__restrict __format,
675 __gnuc_va_list __arg)
676 /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
677/* Read formatted input from stdin into argument list ARG.
678
679 This function is a possible cancellation point and therefore not
680 marked with __THROW. */
681extern int vwscanf (const wchar_t *__restrict __format,
682 __gnuc_va_list __arg)
683 /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */;
684/* Read formatted input from S into argument list ARG. */
685extern int vswscanf (const wchar_t *__restrict __s,
686 const wchar_t *__restrict __format,
687 __gnuc_va_list __arg)
688 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
689
690/* Same redirection as above for the v*wscanf family. */
691# if !__GLIBC_USE (DEPRECATED_SCANF) \
692 && (!defined __LDBL_COMPAT || !defined __REDIRECT) \
693 && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K) \
694 && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 0
695# ifdef __REDIRECT
696extern int __REDIRECT (vfwscanf, (__FILE *__restrict __s,
697 const wchar_t *__restrict __format,
698 __gnuc_va_list __arg), __isoc99_vfwscanf)
699 /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
700extern int __REDIRECT (vwscanf, (const wchar_t *__restrict __format,
701 __gnuc_va_list __arg), __isoc99_vwscanf)
702 /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */;
703extern int __REDIRECT_NTH (vswscanf, (const wchar_t *__restrict __s,
704 const wchar_t *__restrict __format,
705 __gnuc_va_list __arg), __isoc99_vswscanf)
706 /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
707# else
708extern int __isoc99_vfwscanf (__FILE *__restrict __s,
709 const wchar_t *__restrict __format,
710 __gnuc_va_list __arg);
711extern int __isoc99_vwscanf (const wchar_t *__restrict __format,
712 __gnuc_va_list __arg);
713extern int __isoc99_vswscanf (const wchar_t *__restrict __s,
714 const wchar_t *__restrict __format,
715 __gnuc_va_list __arg) __THROW;
716# define vfwscanf __isoc99_vfwscanf
717# define vwscanf __isoc99_vwscanf
718# define vswscanf __isoc99_vswscanf
719# endif
720# endif
721
722#endif /* Use ISO C99. */
723
724
725/* Read a character from STREAM.
726
727 These functions are possible cancellation points and therefore not
728 marked with __THROW. */
729extern wint_t fgetwc (__FILE *__stream);
730extern wint_t getwc (__FILE *__stream);
731
732/* Read a character from stdin.
733
734 This function is a possible cancellation point and therefore not
735 marked with __THROW. */
736extern wint_t getwchar (void);
737
738
739/* Write a character to STREAM.
740
741 These functions are possible cancellation points and therefore not
742 marked with __THROW. */
743extern wint_t fputwc (wchar_t __wc, __FILE *__stream);
744extern wint_t putwc (wchar_t __wc, __FILE *__stream);
745
746/* Write a character to stdout.
747
748 This function is a possible cancellation point and therefore not
749 marked with __THROW. */
750extern wint_t putwchar (wchar_t __wc);
751
752
753/* Get a newline-terminated wide character string of finite length
754 from STREAM.
755
756 This function is a possible cancellation point and therefore not
757 marked with __THROW. */
758extern wchar_t *fgetws (wchar_t *__restrict __ws, int __n,
759 __FILE *__restrict __stream);
760
761/* Write a string to STREAM.
762
763 This function is a possible cancellation point and therefore not
764 marked with __THROW. */
765extern int fputws (const wchar_t *__restrict __ws,
766 __FILE *__restrict __stream);
767
768
769/* Push a character back onto the input buffer of STREAM.
770
771 This function is a possible cancellation point and therefore not
772 marked with __THROW. */
773extern wint_t ungetwc (wint_t __wc, __FILE *__stream);
774
775
776#ifdef __USE_GNU
777/* These are defined to be equivalent to the `char' functions defined
778 in POSIX.1:1996.
779
780 These functions are not part of POSIX and therefore no official
781 cancellation point. But due to similarity with an POSIX interface
782 or due to the implementation they are cancellation points and
783 therefore not marked with __THROW. */
784extern wint_t getwc_unlocked (__FILE *__stream);
785extern wint_t getwchar_unlocked (void);
786
787/* This is the wide character version of a GNU extension.
788
789 This function is not part of POSIX and therefore no official
790 cancellation point. But due to similarity with an POSIX interface
791 or due to the implementation it is a cancellation point and
792 therefore not marked with __THROW. */
793extern wint_t fgetwc_unlocked (__FILE *__stream);
794
795/* Faster version when locking is not necessary.
796
797 This function is 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 it is a cancellation point and
800 therefore not marked with __THROW. */
801extern wint_t fputwc_unlocked (wchar_t __wc, __FILE *__stream);
802
803/* These are defined to be equivalent to the `char' functions defined
804 in POSIX.1:1996.
805
806 These functions are 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 they are cancellation points and
809 therefore not marked with __THROW. */
810extern wint_t putwc_unlocked (wchar_t __wc, __FILE *__stream);
811extern wint_t putwchar_unlocked (wchar_t __wc);
812
813
814/* This function does the same as `fgetws' but does not lock the stream.
815
816 This function is not part of POSIX and therefore no official
817 cancellation point. But due to similarity with an POSIX interface
818 or due to the implementation it is a cancellation point and
819 therefore not marked with __THROW. */
820extern wchar_t *fgetws_unlocked (wchar_t *__restrict __ws, int __n,
821 __FILE *__restrict __stream);
822
823/* This function does the same as `fputws' but does not lock the stream.
824
825 This function is not part of POSIX and therefore no official
826 cancellation point. But due to similarity with an POSIX interface
827 or due to the implementation it is a cancellation point and
828 therefore not marked with __THROW. */
829extern int fputws_unlocked (const wchar_t *__restrict __ws,
830 __FILE *__restrict __stream);
831#endif
832
833
834/* Format TP into S according to FORMAT.
835 Write no more than MAXSIZE wide characters and return the number
836 of wide characters written, or 0 if it would exceed MAXSIZE. */
837extern size_t wcsftime (wchar_t *__restrict __s, size_t __maxsize,
838 const wchar_t *__restrict __format,
839 const struct tm *__restrict __tp) __THROW;
840
841# ifdef __USE_GNU
842/* Similar to `wcsftime' but takes the information from
843 the provided locale and not the global locale. */
844extern size_t wcsftime_l (wchar_t *__restrict __s, size_t __maxsize,
845 const wchar_t *__restrict __format,
846 const struct tm *__restrict __tp,
847 locale_t __loc) __THROW;
848# endif
849
850/* Define some macros helping to catch buffer overflows. */
851#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function
852# include <bits/wchar2.h>
853#endif
854
855#include <bits/floatn.h>
856#if defined __LDBL_COMPAT || __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
857# include <bits/wchar-ldbl.h>
858#endif
859
860__END_DECLS
861
862#endif /* wchar.h */
863