1 /* Copyright (C) 1995-2002, 2003 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
20 * ISO C99 Standard: 7.24
21 * Extended multibyte and wide character utilities <wchar.h>
26 #ifndef __need_mbstate_t
28 # include <features.h>
31 #ifndef __UCLIBC_HAS_WCHAR__
32 #error Attempted to include wchar.h when uClibc built without wide char support.
36 /* Get FILE definition. */
37 # define __need___FILE
42 /* Get va_list definition. */
43 # define __need___va_list
46 /* Get size_t, wchar_t, wint_t and NULL from <stddef.h>. */
47 # define __need_size_t
48 # define __need_wchar_t
54 #include <bits/wchar.h>
56 /* We try to get wint_t from <stddef.h>, but not all GCC versions define it
57 there. So define it ourselves if it remains undefined. */
59 /* Integral type unchanged by default argument promotions that can
60 hold any value corresponding to members of the extended character
61 set, as well as at least one value that does not correspond to any
62 member of the extended character set. */
64 typedef unsigned int wint_t;
66 /* Work around problems with the <stddef.h> file which doesn't put
67 wint_t in the std namespace. */
68 # if defined __cplusplus && defined _GLIBCPP_USE_NAMESPACES \
69 && defined __WINT_TYPE__
71 typedef __WINT_TYPE__ wint_t;
77 #ifndef __mbstate_t_defined
78 # define __mbstate_t_defined 1
79 /* Conversion state information. */
94 } __value; /* Value so far. */
98 #undef __need_mbstate_t
101 /* The rest of the file is only used if used if __need_mbstate_t is not
105 __BEGIN_NAMESPACE_C99
107 typedef __mbstate_t mbstate_t;
110 __USING_NAMESPACE_C99(mbstate_t)
114 /* These constants might also be defined in <inttypes.h>. */
115 # define WCHAR_MIN __WCHAR_MIN
116 # define WCHAR_MAX __WCHAR_MAX
120 # define WEOF (0xffffffffu)
123 /* For XPG4 compliance we have to define the stuff from <wctype.h> here
125 #if defined __USE_XOPEN && !defined __USE_UNIX98
132 __BEGIN_NAMESPACE_STD
133 /* This incomplete type is defined in <time.h> but needed here because
137 /* XXX We have to clean this up at some point. Since tm is in the std
138 namespace but wcsftime is in __c99 the type wouldn't be found
139 without inserting it in the global namespace. */
140 __USING_NAMESPACE_STD(tm)
143 __BEGIN_NAMESPACE_C99
144 /* Copy SRC to DEST. */
145 extern wchar_t *wcscpy (wchar_t *__restrict __dest,
146 __const wchar_t *__restrict __src) __THROW;
147 /* Copy no more than N wide-characters of SRC to DEST. */
148 extern wchar_t *wcsncpy (wchar_t *__restrict __dest,
149 __const wchar_t *__restrict __src, size_t __n)
152 /* Append SRC onto DEST. */
153 extern wchar_t *wcscat (wchar_t *__restrict __dest,
154 __const wchar_t *__restrict __src) __THROW;
155 libc_hidden_proto(wcscat)
156 /* Append no more than N wide-characters of SRC onto DEST. */
157 extern wchar_t *wcsncat (wchar_t *__restrict __dest,
158 __const wchar_t *__restrict __src, size_t __n)
161 /* Compare S1 and S2. */
162 extern int wcscmp (__const wchar_t *__s1, __const wchar_t *__s2)
163 __THROW __attribute_pure__;
164 libc_hidden_proto(wcscmp)
165 /* Compare N wide-characters of S1 and S2. */
166 extern int wcsncmp (__const wchar_t *__s1, __const wchar_t *__s2, size_t __n)
167 __THROW __attribute_pure__;
171 /* Compare S1 and S2, ignoring case. */
172 extern int wcscasecmp (__const wchar_t *__s1, __const wchar_t *__s2) __THROW;
174 /* Compare no more than N chars of S1 and S2, ignoring case. */
175 extern int wcsncasecmp (__const wchar_t *__s1, __const wchar_t *__s2,
178 #ifdef __UCLIBC_HAS_XLOCALE__
179 /* Similar to the two functions above but take the information from
180 the provided locale and not the global locale. */
181 # include <xlocale.h>
183 extern int wcscasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,
184 __locale_t __loc) __THROW;
185 libc_hidden_proto(wcscasecmp_l)
187 extern int wcsncasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,
188 size_t __n, __locale_t __loc) __THROW;
189 libc_hidden_proto(wcsncasecmp_l)
190 #endif /* __UCLIBC_HAS_XLOCALE__ */
193 __BEGIN_NAMESPACE_C99
194 /* Compare S1 and S2, both interpreted as appropriate to the
195 LC_COLLATE category of the current locale. */
196 extern int wcscoll (__const wchar_t *__s1, __const wchar_t *__s2) __THROW;
197 libc_hidden_proto(wcscoll)
198 /* Transform S2 into array pointed to by S1 such that if wcscmp is
199 applied to two transformed strings the result is the as applying
200 `wcscoll' to the original strings. */
201 extern size_t wcsxfrm (wchar_t *__restrict __s1,
202 __const wchar_t *__restrict __s2, size_t __n) __THROW;
206 #ifdef __UCLIBC_HAS_XLOCALE__
207 /* Similar to the two functions above but take the information from
208 the provided locale and not the global locale. */
210 /* Compare S1 and S2, both interpreted as appropriate to the
211 LC_COLLATE category of the given locale. */
212 extern int wcscoll_l (__const wchar_t *__s1, __const wchar_t *__s2,
213 __locale_t __loc) __THROW;
214 libc_hidden_proto(wcscoll_l)
216 /* Transform S2 into array pointed to by S1 such that if wcscmp is
217 applied to two transformed strings the result is the as applying
218 `wcscoll' to the original strings. */
219 extern size_t wcsxfrm_l (wchar_t *__s1, __const wchar_t *__s2,
220 size_t __n, __locale_t __loc) __THROW;
221 libc_hidden_proto(wcsxfrm_l)
223 #endif /* __UCLIBC_HAS_XLOCALE__ */
225 /* Duplicate S, returning an identical malloc'd string. */
226 extern wchar_t *wcsdup (__const wchar_t *__s) __THROW __attribute_malloc__;
229 __BEGIN_NAMESPACE_C99
230 /* Find the first occurrence of WC in WCS. */
231 extern wchar_t *wcschr (__const wchar_t *__wcs, wchar_t __wc)
232 __THROW __attribute_pure__;
233 /* Find the last occurrence of WC in WCS. */
234 extern wchar_t *wcsrchr (__const wchar_t *__wcs, wchar_t __wc)
235 __THROW __attribute_pure__;
239 /* This function is similar to `wcschr'. But it returns a pointer to
240 the closing NUL wide character in case C is not found in S. */
241 extern wchar_t *wcschrnul (__const wchar_t *__s, wchar_t __wc)
242 __THROW __attribute_pure__;
245 __BEGIN_NAMESPACE_C99
246 /* Return the length of the initial segmet of WCS which
247 consists entirely of wide characters not in REJECT. */
248 extern size_t wcscspn (__const wchar_t *__wcs, __const wchar_t *__reject)
249 __THROW __attribute_pure__;
250 /* Return the length of the initial segmet of WCS which
251 consists entirely of wide characters in ACCEPT. */
252 extern size_t wcsspn (__const wchar_t *__wcs, __const wchar_t *__accept)
253 __THROW __attribute_pure__;
254 libc_hidden_proto(wcsspn)
255 /* Find the first occurrence in WCS of any character in ACCEPT. */
256 extern wchar_t *wcspbrk (__const wchar_t *__wcs, __const wchar_t *__accept)
257 __THROW __attribute_pure__;
258 libc_hidden_proto(wcspbrk)
259 /* Find the first occurrence of NEEDLE in HAYSTACK. */
260 /* SuSv uses restrict keyword, glibc does not */
261 extern wchar_t *wcsstr (__const wchar_t *__restrict __haystack, __const wchar_t *__restrict __needle)
262 __THROW __attribute_pure__;
264 /* Divide WCS into tokens separated by characters in DELIM. */
265 extern wchar_t *wcstok (wchar_t *__restrict __s,
266 __const wchar_t *__restrict __delim,
267 wchar_t **__restrict __ptr) __THROW;
269 /* Return the number of wide characters in S. */
270 extern size_t wcslen (__const wchar_t *__s) __THROW __attribute_pure__;
271 libc_hidden_proto(wcslen)
274 #if defined __USE_XOPEN && defined __UCLIBC_SUSV3_LEGACY__
275 /* Another name for `wcsstr' from XPG4. */
276 /* SuSv3 did not use restrict keyword, probably because it was marked LEGACY
277 we do to be in sync with wcsstr */
278 extern wchar_t *wcswcs (__const wchar_t *__restrict __haystack, __const wchar_t *__restrict __needle)
279 __THROW __attribute_pure__;
283 /* Return the number of wide characters in S, but at most MAXLEN. */
284 extern size_t wcsnlen (__const wchar_t *__s, size_t __maxlen)
285 __THROW __attribute_pure__;
286 libc_hidden_proto(wcsnlen)
290 __BEGIN_NAMESPACE_C99
291 /* Search N wide characters of S for C. */
292 extern wchar_t *wmemchr (__const wchar_t *__s, wchar_t __c, size_t __n)
293 __THROW __attribute_pure__;
294 libc_hidden_proto(wmemchr)
296 /* Compare N wide characters of S1 and S2. */
297 /* SuSv4 does not use restrict keyword for S1 and S2, glibc does */
298 extern int wmemcmp (__const wchar_t *__s1,
299 __const wchar_t *__s2, size_t __n)
300 __THROW __attribute_pure__;
302 /* Copy N wide characters of SRC to DEST. */
303 extern wchar_t *wmemcpy (wchar_t *__restrict __s1,
304 __const wchar_t *__restrict __s2, size_t __n) __THROW;
305 libc_hidden_proto(wmemcpy)
307 /* Copy N wide characters of SRC to DEST, guaranteeing
308 correct behavior for overlapping strings. */
309 extern wchar_t *wmemmove (wchar_t *__s1, __const wchar_t *__s2, size_t __n)
312 /* Set N wide characters of S to C. */
313 extern wchar_t *wmemset (wchar_t *__s, wchar_t __c, size_t __n) __THROW;
317 /* Copy N wide characters of SRC to DEST and return pointer to following
319 extern wchar_t *wmempcpy (wchar_t *__restrict __s1,
320 __const wchar_t *__restrict __s2, size_t __n)
322 libc_hidden_proto(wmempcpy)
326 __BEGIN_NAMESPACE_C99
327 /* Determine whether C constitutes a valid (one-byte) multibyte
329 extern wint_t btowc (int __c) __THROW;
330 libc_hidden_proto(btowc)
332 /* Determine whether C corresponds to a member of the extended
333 character set whose multibyte representation is a single byte. */
334 extern int wctob (wint_t __c) __THROW;
336 /* Determine whether PS points to an object representing the initial
338 extern int mbsinit (__const mbstate_t *__ps) __THROW __attribute_pure__;
339 libc_hidden_proto(mbsinit)
341 /* Write wide character representation of multibyte character pointed
343 extern size_t mbrtowc (wchar_t *__restrict __pwc,
344 __const char *__restrict __s, size_t __n,
345 mbstate_t *__p) __THROW;
346 libc_hidden_proto(mbrtowc)
348 /* Write multibyte representation of wide character WC to S. */
349 extern size_t wcrtomb (char *__restrict __s, wchar_t __wc,
350 mbstate_t *__restrict __ps) __THROW;
351 libc_hidden_proto(wcrtomb)
353 /* Return number of bytes in multibyte character pointed to by S. */
354 #if 0 /* uClibc: disabled */
355 extern size_t __mbrlen (__const char *__restrict __s, size_t __n,
356 mbstate_t *__restrict __ps) __THROW;
358 extern size_t mbrlen (__const char *__restrict __s, size_t __n,
359 mbstate_t *__restrict __ps) __THROW;
360 libc_hidden_proto(mbrlen)
362 /* Write wide character representation of multibyte character string
364 extern size_t mbsrtowcs (wchar_t *__restrict __dst,
365 __const char **__restrict __src, size_t __len,
366 mbstate_t *__restrict __ps) __THROW;
367 libc_hidden_proto(mbsrtowcs)
369 /* Write multibyte character representation of wide character string
371 extern size_t wcsrtombs (char *__restrict __dst,
372 __const wchar_t **__restrict __src, size_t __len,
373 mbstate_t *__restrict __ps) __THROW;
374 libc_hidden_proto(wcsrtombs)
379 /* Write wide character representation of at most NMC bytes of the
380 multibyte character string SRC to DST. */
381 extern size_t mbsnrtowcs (wchar_t *__restrict __dst,
382 __const char **__restrict __src, size_t __nmc,
383 size_t __len, mbstate_t *__restrict __ps) __THROW;
384 libc_hidden_proto(mbsnrtowcs)
386 /* Write multibyte character representation of at most NWC characters
387 from the wide character string SRC to DST. */
388 extern size_t wcsnrtombs (char *__restrict __dst,
389 __const wchar_t **__restrict __src,
390 size_t __nwc, size_t __len,
391 mbstate_t *__restrict __ps) __THROW;
392 libc_hidden_proto(wcsnrtombs)
396 /* The following functions are extensions found in X/Open CAE. */
398 /* Determine number of column positions required for C. */
399 extern int wcwidth (wchar_t __c) __THROW;
401 /* Determine number of column positions required for first N wide
402 characters (or fewer if S ends before this) in S. */
403 extern int wcswidth (__const wchar_t *__s, size_t __n) __THROW;
404 libc_hidden_proto(wcswidth)
405 #endif /* Use X/Open. */
408 __BEGIN_NAMESPACE_C99
409 #ifdef __UCLIBC_HAS_FLOATS__
410 /* Convert initial portion of the wide string NPTR to `double'
412 extern double wcstod (__const wchar_t *__restrict __nptr,
413 wchar_t **__restrict __endptr) __THROW;
416 /* Likewise for `float' and `long double' sizes of floating-point numbers. */
417 extern float wcstof (__const wchar_t *__restrict __nptr,
418 wchar_t **__restrict __endptr) __THROW;
419 extern long double wcstold (__const wchar_t *__restrict __nptr,
420 wchar_t **__restrict __endptr) __THROW;
422 #endif /* __UCLIBC_HAS_FLOATS__ */
425 /* Convert initial portion of wide string NPTR to `long int'
427 extern long int wcstol (__const wchar_t *__restrict __nptr,
428 wchar_t **__restrict __endptr, int __base) __THROW;
430 /* Convert initial portion of wide string NPTR to `unsigned long int'
432 extern unsigned long int wcstoul (__const wchar_t *__restrict __nptr,
433 wchar_t **__restrict __endptr, int __base)
436 #if defined __USE_ISOC99 || (defined __GNUC__ && defined __USE_GNU)
437 /* Convert initial portion of wide string NPTR to `long long int'
440 extern long long int wcstoll (__const wchar_t *__restrict __nptr,
441 wchar_t **__restrict __endptr, int __base)
444 /* Convert initial portion of wide string NPTR to `unsigned long long int'
447 extern unsigned long long int wcstoull (__const wchar_t *__restrict __nptr,
448 wchar_t **__restrict __endptr,
450 #endif /* ISO C99 or GCC and GNU. */
453 #if defined __GNUC__ && defined __USE_GNU
454 /* Convert initial portion of wide string NPTR to `long long int'
457 extern long long int wcstoq (__const wchar_t *__restrict __nptr,
458 wchar_t **__restrict __endptr, int __base)
461 /* Convert initial portion of wide string NPTR to `unsigned long long int'
464 extern unsigned long long int wcstouq (__const wchar_t *__restrict __nptr,
465 wchar_t **__restrict __endptr,
467 #endif /* GCC and use GNU. */
470 #ifdef __UCLIBC_HAS_XLOCALE__
471 /* The concept of one static locale per category is not very well
472 thought out. Many applications will need to process its data using
473 information from several different locales. Another application is
474 the implementation of the internationalization handling in the
475 upcoming ISO C++ standard library. To support this another set of
476 the functions using locale data exist which have an additional
479 Attention: all these functions are *not* standardized in any form.
480 This is a proof-of-concept implementation. */
482 /* Structure for reentrant locale using functions. This is an
483 (almost) opaque type for the user level programs. */
484 # include <xlocale.h>
486 /* Special versions of the functions above which take the locale to
487 use as an additional parameter. */
488 extern long int wcstol_l (__const wchar_t *__restrict __nptr,
489 wchar_t **__restrict __endptr, int __base,
490 __locale_t __loc) __THROW;
492 extern unsigned long int wcstoul_l (__const wchar_t *__restrict __nptr,
493 wchar_t **__restrict __endptr,
494 int __base, __locale_t __loc) __THROW;
497 extern long long int wcstoll_l (__const wchar_t *__restrict __nptr,
498 wchar_t **__restrict __endptr,
499 int __base, __locale_t __loc) __THROW;
502 extern unsigned long long int wcstoull_l (__const wchar_t *__restrict __nptr,
503 wchar_t **__restrict __endptr,
504 int __base, __locale_t __loc)
507 #ifdef __UCLIBC_HAS_FLOATS__
508 extern double wcstod_l (__const wchar_t *__restrict __nptr,
509 wchar_t **__restrict __endptr, __locale_t __loc)
512 extern float wcstof_l (__const wchar_t *__restrict __nptr,
513 wchar_t **__restrict __endptr, __locale_t __loc)
516 extern long double wcstold_l (__const wchar_t *__restrict __nptr,
517 wchar_t **__restrict __endptr,
518 __locale_t __loc) __THROW;
519 #endif /* __UCLIBC_HAS_FLOATS__ */
520 #endif /* __UCLIBC_HAS_XLOCALE__ */
525 /* Copy SRC to DEST, returning the address of the terminating L'\0' in
527 extern wchar_t *wcpcpy (wchar_t *__dest, __const wchar_t *__src) __THROW;
529 /* Copy no more than N characters of SRC to DEST, returning the address of
530 the last character written into DEST. */
531 extern wchar_t *wcpncpy (wchar_t *__dest, __const wchar_t *__src, size_t __n)
536 /* Wide character I/O functions. */
537 #if defined __USE_ISOC99 || defined __USE_UNIX98
538 __BEGIN_NAMESPACE_C99
540 /* Select orientation for stream. */
541 extern int fwide (__FILE *__fp, int __mode) __THROW;
544 /* Write formatted output to STREAM.
546 This function is a possible cancellation point and therefore not
547 marked with __THROW. */
548 extern int fwprintf (__FILE *__restrict __stream,
549 __const wchar_t *__restrict __format, ...)
550 /* __attribute__ ((__format__ (__wprintf__, 2, 3))) */;
551 /* Write formatted output to stdout.
553 This function is a possible cancellation point and therefore not
554 marked with __THROW. */
555 extern int wprintf (__const wchar_t *__restrict __format, ...)
556 /* __attribute__ ((__format__ (__wprintf__, 1, 2))) */;
557 /* Write formatted output of at most N characters to S. */
558 extern int swprintf (wchar_t *__restrict __s, size_t __n,
559 __const wchar_t *__restrict __format, ...)
560 __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 4))) */;
562 /* Write formatted output to S from argument list ARG.
564 This function is a possible cancellation point and therefore not
565 marked with __THROW. */
566 extern int vfwprintf (__FILE *__restrict __s,
567 __const wchar_t *__restrict __format,
568 __gnuc_va_list __arg)
569 /* __attribute__ ((__format__ (__wprintf__, 2, 0))) */;
570 libc_hidden_proto(vfwprintf)
571 /* Write formatted output to stdout from argument list ARG.
573 This function is a possible cancellation point and therefore not
574 marked with __THROW. */
575 extern int vwprintf (__const wchar_t *__restrict __format,
576 __gnuc_va_list __arg)
577 /* __attribute__ ((__format__ (__wprintf__, 1, 0))) */;
578 /* Write formatted output of at most N character to S from argument
580 extern int vswprintf (wchar_t *__restrict __s, size_t __n,
581 __const wchar_t *__restrict __format,
582 __gnuc_va_list __arg)
583 __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */;
584 libc_hidden_proto(vswprintf)
587 /* Read formatted input from STREAM.
589 This function is a possible cancellation point and therefore not
590 marked with __THROW. */
591 extern int fwscanf (__FILE *__restrict __stream,
592 __const wchar_t *__restrict __format, ...)
593 /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
594 /* Read formatted input from stdin.
596 This function is a possible cancellation point and therefore not
597 marked with __THROW. */
598 extern int wscanf (__const wchar_t *__restrict __format, ...)
599 /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;
600 /* Read formatted input from S. */
601 extern int swscanf (__const wchar_t *__restrict __s,
602 __const wchar_t *__restrict __format, ...)
603 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
606 #endif /* Use ISO C99 and Unix98. */
609 __BEGIN_NAMESPACE_C99
611 /* Read formatted input from S into argument list ARG.
613 This function is a possible cancellation point and therefore not
614 marked with __THROW. */
615 extern int vfwscanf (__FILE *__restrict __s,
616 __const wchar_t *__restrict __format,
617 __gnuc_va_list __arg)
618 /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
619 libc_hidden_proto(vfwscanf)
620 /* Read formatted input from stdin into argument list ARG.
622 This function is a possible cancellation point and therefore not
623 marked with __THROW. */
624 extern int vwscanf (__const wchar_t *__restrict __format,
625 __gnuc_va_list __arg)
626 /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */;
627 /* Read formatted input from S into argument list ARG. */
628 extern int vswscanf (__const wchar_t *__restrict __s,
629 __const wchar_t *__restrict __format,
630 __gnuc_va_list __arg)
631 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
632 libc_hidden_proto(vswscanf)
635 #endif /* Use ISO C99. */
638 __BEGIN_NAMESPACE_C99
639 /* Read a character from STREAM.
641 These functions are possible cancellation points and therefore not
642 marked with __THROW. */
643 extern wint_t fgetwc (__FILE *__stream);
644 libc_hidden_proto(fgetwc)
645 extern wint_t getwc (__FILE *__stream);
647 /* Read a character from stdin.
649 This function is a possible cancellation point and therefore not
650 marked with __THROW. */
651 extern wint_t getwchar (void);
654 /* Write a character to STREAM.
656 These functions are possible cancellation points and therefore not
657 marked with __THROW. */
658 extern wint_t fputwc (wchar_t __wc, __FILE *__stream);
659 libc_hidden_proto(fputwc)
660 extern wint_t putwc (wchar_t __wc, __FILE *__stream);
662 /* Write a character to stdout.
664 This function is a possible cancellation points and therefore not
665 marked with __THROW. */
666 extern wint_t putwchar (wchar_t __wc);
669 /* Get a newline-terminated wide character string of finite length
672 This function is a possible cancellation points and therefore not
673 marked with __THROW. */
674 extern wchar_t *fgetws (wchar_t *__restrict __ws, int __n,
675 __FILE *__restrict __stream);
677 /* Write a string to STREAM.
679 This function is a possible cancellation points and therefore not
680 marked with __THROW. */
681 extern int fputws (__const wchar_t *__restrict __ws,
682 __FILE *__restrict __stream);
683 libc_hidden_proto(fputws)
686 /* Push a character back onto the input buffer of STREAM.
688 This function is a possible cancellation points and therefore not
689 marked with __THROW. */
690 extern wint_t ungetwc (wint_t __wc, __FILE *__stream);
691 libc_hidden_proto(ungetwc)
696 /* These are defined to be equivalent to the `char' functions defined
699 These functions are not part of POSIX and therefore no official
700 cancellation point. But due to similarity with an POSIX interface
701 or due to the implementation they are cancellation points and
702 therefore not marked with __THROW. */
703 extern wint_t getwc_unlocked (__FILE *__stream);
704 extern wint_t getwchar_unlocked (void);
706 /* This is the wide character version of a GNU extension.
708 This function is not part of POSIX and therefore no official
709 cancellation point. But due to similarity with an POSIX interface
710 or due to the implementation it is a cancellation point and
711 therefore not marked with __THROW. */
712 extern wint_t fgetwc_unlocked (__FILE *__stream);
713 libc_hidden_proto(fgetwc_unlocked)
715 /* Faster version when locking is not necessary.
717 This function is not part of POSIX and therefore no official
718 cancellation point. But due to similarity with an POSIX interface
719 or due to the implementation it is a cancellation point and
720 therefore not marked with __THROW. */
721 extern wint_t fputwc_unlocked (wchar_t __wc, __FILE *__stream);
722 libc_hidden_proto(fputwc_unlocked)
724 /* These are defined to be equivalent to the `char' functions defined
727 These functions are not part of POSIX and therefore no official
728 cancellation point. But due to similarity with an POSIX interface
729 or due to the implementation they are cancellation points and
730 therefore not marked with __THROW. */
731 extern wint_t putwc_unlocked (wchar_t __wc, __FILE *__stream);
732 extern wint_t putwchar_unlocked (wchar_t __wc);
735 /* This function does the same as `fgetws' but does not lock the stream.
737 This function is not part of POSIX and therefore no official
738 cancellation point. But due to similarity with an POSIX interface
739 or due to the implementation it is a cancellation point and
740 therefore not marked with __THROW. */
741 extern wchar_t *fgetws_unlocked (wchar_t *__restrict __ws, int __n,
742 __FILE *__restrict __stream);
743 libc_hidden_proto(fgetws_unlocked)
745 /* This function does the same as `fputws' but does not lock the stream.
747 This function is not part of POSIX and therefore no official
748 cancellation point. But due to similarity with an POSIX interface
749 or due to the implementation it is a cancellation point and
750 therefore not marked with __THROW. */
751 extern int fputws_unlocked (__const wchar_t *__restrict __ws,
752 __FILE *__restrict __stream);
753 libc_hidden_proto(fputws_unlocked)
757 __BEGIN_NAMESPACE_C99
758 /* Format TP into S according to FORMAT.
759 Write no more than MAXSIZE wide characters and return the number
760 of wide characters written, or 0 if it would exceed MAXSIZE. */
761 extern size_t wcsftime (wchar_t *__restrict __s, size_t __maxsize,
762 __const wchar_t *__restrict __format,
763 __const struct tm *__restrict __tp) __THROW;
766 # if defined __USE_GNU && defined __UCLIBC_HAS_XLOCALE__
767 # include <xlocale.h>
769 /* Similar to `wcsftime' but takes the information from
770 the provided locale and not the global locale. */
771 extern size_t wcsftime_l (wchar_t *__restrict __s, size_t __maxsize,
772 __const wchar_t *__restrict __format,
773 __const struct tm *__restrict __tp,
774 __locale_t __loc) __THROW;
775 libc_hidden_proto(wcsftime_l)
778 /* The X/Open standard demands that most of the functions defined in
779 the <wctype.h> header must also appear here. This is probably
780 because some X/Open members wrote their implementation before the
781 ISO C standard was published and introduced the better solution.
782 We have to provide these definitions for compliance reasons but we
783 do this nonsense only if really necessary. */
784 #if defined __USE_UNIX98 && !defined __USE_GNU
785 # define __need_iswxxx
790 extern size_t __wcslcpy(wchar_t *__restrict dst,
791 const wchar_t *__restrict src, size_t n) attribute_hidden;
796 #endif /* _WCHAR_H defined */