1 /* Copyright (C) 1995-1999, 2000, 2001 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;
68 #ifndef __mbstate_t_defined
69 # define __mbstate_t_defined 1
70 /* Conversion state information. */
78 } __value; /* Value so far. */
81 #undef __need_mbstate_t
84 /* The rest of the file is only used if used if __need_mbstate_t is not
89 typedef __mbstate_t mbstate_t;
92 /* These constants might also be defined in <inttypes.h>. */
93 # define WCHAR_MIN __WCHAR_MIN
94 # define WCHAR_MAX __WCHAR_MAX
98 # define WEOF (0xffffffffu)
101 /* For XPG4 compliance we have to define the stuff from <wctype.h> here
103 #if defined __USE_XOPEN && !defined __USE_UNIX98
107 /* This incomplete type is defined in <time.h> but needed here because
114 /* Copy SRC to DEST. */
115 extern wchar_t *wcscpy (wchar_t *__restrict __dest,
116 __const wchar_t *__restrict __src) __THROW;
117 /* Copy no more than N wide-characters of SRC to DEST. */
118 extern wchar_t *wcsncpy (wchar_t *__restrict __dest,
119 __const wchar_t *__restrict __src, size_t __n)
122 /* Append SRC onto DEST. */
123 extern wchar_t *wcscat (wchar_t *__restrict __dest,
124 __const wchar_t *__restrict __src) __THROW;
125 /* Append no more than N wide-characters of SRC onto DEST. */
126 extern wchar_t *wcsncat (wchar_t *__restrict __dest,
127 __const wchar_t *__restrict __src, size_t __n)
130 /* Compare S1 and S2. */
131 extern int wcscmp (__const wchar_t *__s1, __const wchar_t *__s2)
132 __THROW __attribute_pure__;
133 /* Compare N wide-characters of S1 and S2. */
134 extern int wcsncmp (__const wchar_t *__s1, __const wchar_t *__s2, size_t __n)
135 __THROW __attribute_pure__;
138 /* Compare S1 and S2, ignoring case. */
139 extern int wcscasecmp (__const wchar_t *__s1, __const wchar_t *__s2) __THROW;
141 /* Compare no more than N chars of S1 and S2, ignoring case. */
142 extern int wcsncasecmp (__const wchar_t *__s1, __const wchar_t *__s2,
145 /* Similar to the two functions above but take the information from
146 the provided locale and not the global locale. */
148 # include <xlocale.h>
150 extern int __wcscasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,
151 __locale_t __loc) __THROW;
153 extern int __wcsncasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,
154 size_t __n, __locale_t __loc) __THROW;
158 /* Compare S1 and S2, both interpreted as appropriate to the
159 LC_COLLATE category of the current locale. */
160 extern int wcscoll (__const wchar_t *__s1, __const wchar_t *__s2) __THROW;
161 /* Transform S2 into array pointed to by S1 such that if wcscmp is
162 applied to two transformed strings the result is the as applying
163 `wcscoll' to the original strings. */
164 extern size_t wcsxfrm (wchar_t *__restrict __s1,
165 __const wchar_t *__restrict __s2, size_t __n) __THROW;
169 /* Similar to the two functions above but take the information from
170 the provided locale and not the global locale. */
172 /* Compare S1 and S2, both interpreted as appropriate to the
173 LC_COLLATE category of the given locale. */
174 extern int __wcscoll_l (__const wchar_t *__s1, __const wchar_t *__s2,
175 __locale_t __loc) __THROW;
176 /* Transform S2 into array pointed to by S1 such that if wcscmp is
177 applied to two transformed strings the result is the as applying
178 `wcscoll' to the original strings. */
179 extern size_t __wcsxfrm_l (wchar_t *__s1, __const wchar_t *__s2,
180 size_t __n, __locale_t __loc) __THROW;
183 /* Duplicate S, returning an identical malloc'd string. */
184 extern wchar_t *wcsdup (__const wchar_t *__s) __THROW __attribute_malloc__;
187 /* Find the first occurrence of WC in WCS. */
188 extern wchar_t *wcschr (__const wchar_t *__wcs, wchar_t __wc)
189 __THROW __attribute_pure__;
190 /* Find the last occurrence of WC in WCS. */
191 extern wchar_t *wcsrchr (__const wchar_t *__wcs, wchar_t __wc)
192 __THROW __attribute_pure__;
195 /* This function is similar to `wcschr'. But it returns a pointer to
196 the closing NUL wide character in case C is not found in S. */
197 extern wchar_t *wcschrnul (__const wchar_t *__s, wchar_t __wc)
198 __THROW __attribute_pure__;
201 /* Return the length of the initial segmet of WCS which
202 consists entirely of wide characters not in REJECT. */
203 extern size_t wcscspn (__const wchar_t *__wcs, __const wchar_t *__reject)
204 __THROW __attribute_pure__;
205 /* Return the length of the initial segmet of WCS which
206 consists entirely of wide characters in ACCEPT. */
207 extern size_t wcsspn (__const wchar_t *__wcs, __const wchar_t *__accept)
208 __THROW __attribute_pure__;
209 /* Find the first occurrence in WCS of any character in ACCEPT. */
210 extern wchar_t *wcspbrk (__const wchar_t *__wcs, __const wchar_t *__accept)
211 __THROW __attribute_pure__;
212 /* Find the first occurrence of NEEDLE in HAYSTACK. */
213 extern wchar_t *wcsstr (__const wchar_t *__haystack, __const wchar_t *__needle)
214 __THROW __attribute_pure__;
217 /* Another name for `wcsstr' from XPG4. */
218 extern wchar_t *wcswcs (__const wchar_t *__haystack, __const wchar_t *__needle)
219 __THROW __attribute_pure__;
222 /* Divide WCS into tokens separated by characters in DELIM. */
223 extern wchar_t *wcstok (wchar_t *__restrict __s,
224 __const wchar_t *__restrict __delim,
225 wchar_t **__restrict __ptr) __THROW;
227 /* Return the number of wide characters in S. */
228 extern size_t wcslen (__const wchar_t *__s) __THROW __attribute_pure__;
231 /* Return the number of wide characters in S, but at most MAXLEN. */
232 extern size_t wcsnlen (__const wchar_t *__s, size_t __maxlen)
233 __THROW __attribute_pure__;
237 /* Search N wide characters of S for C. */
238 extern wchar_t *wmemchr (__const wchar_t *__s, wchar_t __c, size_t __n)
239 __THROW __attribute_pure__;
241 /* Compare N wide characters of S1 and S2. */
242 extern int wmemcmp (__const wchar_t *__restrict __s1,
243 __const wchar_t *__restrict __s2, size_t __n)
244 __THROW __attribute_pure__;
246 /* Copy N wide characters of SRC to DEST. */
247 extern wchar_t *wmemcpy (wchar_t *__restrict __s1,
248 __const wchar_t *__restrict __s2, size_t __n) __THROW;
250 /* Copy N wide characters of SRC to DEST, guaranteeing
251 correct behavior for overlapping strings. */
252 extern wchar_t *wmemmove (wchar_t *__s1, __const wchar_t *__s2, size_t __n)
255 /* Set N wide characters of S to C. */
256 extern wchar_t *wmemset (wchar_t *__s, wchar_t __c, size_t __n) __THROW;
259 /* Copy N wide characters of SRC to DEST and return pointer to following
261 extern wchar_t *wmempcpy (wchar_t *__restrict __s1,
262 __const wchar_t *__restrict __s2, size_t __n)
267 /* Determine whether C constitutes a valid (one-byte) multibyte
269 extern wint_t btowc (int __c) __THROW;
271 /* Determine whether C corresponds to a member of the extended
272 character set whose multibyte representation is a single byte. */
273 extern int wctob (wint_t __c) __THROW;
275 /* Determine whether PS points to an object representing the initial
277 extern int mbsinit (__const mbstate_t *__ps) __THROW __attribute_pure__;
279 /* Write wide character representation of multibyte character pointed
281 extern size_t mbrtowc (wchar_t *__restrict __pwc,
282 __const char *__restrict __s, size_t __n,
283 mbstate_t *__p) __THROW;
285 /* Write multibyte representation of wide character WC to S. */
286 extern size_t wcrtomb (char *__restrict __s, wchar_t __wc,
287 mbstate_t *__restrict __ps) __THROW;
289 /* Return number of bytes in multibyte character pointed to by S. */
290 extern size_t __mbrlen (__const char *__restrict __s, size_t __n,
291 mbstate_t *__restrict __ps) __THROW;
292 extern size_t mbrlen (__const char *__restrict __s, size_t __n,
293 mbstate_t *__restrict __ps) __THROW;
296 /* #ifdef __USE_EXTERN_INLINES */
297 /* Define inline function as optimization. */
298 extern __inline size_t mbrlen (__const char *__restrict __s, size_t __n,
299 mbstate_t *__restrict __ps) __THROW
300 { return (__ps != NULL
301 ? mbrtowc (NULL, __s, __n, __ps) : __mbrlen (__s, __n, NULL)); }
304 /* Write wide character representation of multibyte character string
306 extern size_t mbsrtowcs (wchar_t *__restrict __dst,
307 __const char **__restrict __src, size_t __len,
308 mbstate_t *__restrict __ps) __THROW;
310 /* Write multibyte character representation of wide character string
312 extern size_t wcsrtombs (char *__restrict __dst,
313 __const wchar_t **__restrict __src, size_t __len,
314 mbstate_t *__restrict __ps) __THROW;
318 /* Write wide character representation of at most NMC bytes of the
319 multibyte character string SRC to DST. */
320 extern size_t mbsnrtowcs (wchar_t *__restrict __dst,
321 __const char **__restrict __src, size_t __nmc,
322 size_t __len, mbstate_t *__restrict __ps) __THROW;
324 /* Write multibyte character representation of at most NWC characters
325 from the wide character string SRC to DST. */
326 extern size_t wcsnrtombs (char *__restrict __dst,
327 __const wchar_t **__restrict __src,
328 size_t __nwc, size_t __len,
329 mbstate_t *__restrict __ps) __THROW;
333 /* The following functions are extensions found in X/Open CAE. */
335 /* Determine number of column positions required for C. */
336 extern int wcwidth (wchar_t __c) __THROW;
338 /* Determine number of column positions required for first N wide
339 characters (or fewer if S ends before this) in S. */
340 extern int wcswidth (__const wchar_t *__s, size_t __n) __THROW;
341 #endif /* Use X/Open. */
344 /* Convert initial portion of the wide string NPTR to `double'
346 extern double wcstod (__const wchar_t *__restrict __nptr,
347 wchar_t **__restrict __endptr) __THROW;
350 /* Likewise for `float' and `long double' sizes of floating-point numbers. */
351 extern float wcstof (__const wchar_t *__restrict __nptr,
352 wchar_t **__restrict __endptr) __THROW;
353 extern long double wcstold (__const wchar_t *__restrict __nptr,
354 wchar_t **__restrict __endptr) __THROW;
358 /* Convert initial portion of wide string NPTR to `long int'
360 extern long int wcstol (__const wchar_t *__restrict __nptr,
361 wchar_t **__restrict __endptr, int __base) __THROW;
363 /* Convert initial portion of wide string NPTR to `unsigned long int'
365 extern unsigned long int wcstoul (__const wchar_t *__restrict __nptr,
366 wchar_t **__restrict __endptr, int __base)
369 #if defined __GNUC__ && defined __USE_GNU
370 /* Convert initial portion of wide string NPTR to `long int'
373 extern long long int wcstoq (__const wchar_t *__restrict __nptr,
374 wchar_t **__restrict __endptr, int __base)
377 /* Convert initial portion of wide string NPTR to `unsigned long long int'
380 extern unsigned long long int wcstouq (__const wchar_t *__restrict __nptr,
381 wchar_t **__restrict __endptr,
383 #endif /* GCC and use GNU. */
385 #if defined __USE_ISOC99 || (defined __GNUC__ && defined __USE_GNU)
386 /* Convert initial portion of wide string NPTR to `long int'
389 extern long long int wcstoll (__const wchar_t *__restrict __nptr,
390 wchar_t **__restrict __endptr, int __base)
393 /* Convert initial portion of wide string NPTR to `unsigned long long int'
396 extern unsigned long long int wcstoull (__const wchar_t *__restrict __nptr,
397 wchar_t **__restrict __endptr,
399 #endif /* ISO C99 or GCC and GNU. */
402 /* #ifdef __USE_GNU */
403 /* The concept of one static locale per category is not very well
404 thought out. Many applications will need to process its data using
405 information from several different locales. Another application is
406 the implementation of the internationalization handling in the
407 upcoming ISO C++ standard library. To support this another set of
408 the functions using locale data exist which have an additional
411 Attention: all these functions are *not* standardized in any form.
412 This is a proof-of-concept implementation. */
414 /* Structure for reentrant locale using functions. This is an
415 (almost) opaque type for the user level programs. */
416 # include <xlocale.h>
418 /* Special versions of the functions above which take the locale to
419 use as an additional parameter. */
420 extern long int __wcstol_l (__const wchar_t *__restrict __nptr,
421 wchar_t **__restrict __endptr, int __base,
422 __locale_t __loc) __THROW;
424 extern unsigned long int __wcstoul_l (__const wchar_t *__restrict __nptr,
425 wchar_t **__restrict __endptr,
426 int __base, __locale_t __loc) __THROW;
429 extern long long int __wcstoll_l (__const wchar_t *__restrict __nptr,
430 wchar_t **__restrict __endptr,
431 int __base, __locale_t __loc) __THROW;
434 extern unsigned long long int __wcstoull_l (__const wchar_t *__restrict __nptr,
435 wchar_t **__restrict __endptr,
436 int __base, __locale_t __loc)
439 extern double __wcstod_l (__const wchar_t *__restrict __nptr,
440 wchar_t **__restrict __endptr, __locale_t __loc)
443 extern float __wcstof_l (__const wchar_t *__restrict __nptr,
444 wchar_t **__restrict __endptr, __locale_t __loc)
447 extern long double __wcstold_l (__const wchar_t *__restrict __nptr,
448 wchar_t **__restrict __endptr,
449 __locale_t __loc) __THROW;
454 /* The internal entry points for `wcstoX' take an extra flag argument
455 saying whether or not to parse locale-dependent number grouping. */
456 extern double __wcstod_internal (__const wchar_t *__restrict __nptr,
457 wchar_t **__restrict __endptr, int __group)
459 extern float __wcstof_internal (__const wchar_t *__restrict __nptr,
460 wchar_t **__restrict __endptr, int __group)
462 extern long double __wcstold_internal (__const wchar_t *__restrict __nptr,
463 wchar_t **__restrict __endptr,
464 int __group) __THROW;
466 #ifndef __wcstol_internal_defined
467 extern long int __wcstol_internal (__const wchar_t *__restrict __nptr,
468 wchar_t **__restrict __endptr,
469 int __base, int __group) __THROW;
470 # define __wcstol_internal_defined 1
472 #ifndef __wcstoul_internal_defined
473 extern unsigned long int __wcstoul_internal (__const wchar_t *__restrict __npt,
474 wchar_t **__restrict __endptr,
475 int __base, int __group) __THROW;
476 # define __wcstoul_internal_defined 1
478 #ifndef __wcstoll_internal_defined
480 extern long long int __wcstoll_internal (__const wchar_t *__restrict __nptr,
481 wchar_t **__restrict __endptr,
482 int __base, int __group) __THROW;
483 # define __wcstoll_internal_defined 1
485 #ifndef __wcstoull_internal_defined
487 extern unsigned long long int __wcstoull_internal (__const wchar_t *
492 int __group) __THROW;
493 # define __wcstoull_internal_defined 1
497 #if defined __OPTIMIZE__ && __GNUC__ >= 2
498 /* Define inline functions which call the internal entry points. */
500 extern __inline double wcstod (__const wchar_t *__restrict __nptr,
501 wchar_t **__restrict __endptr) __THROW
502 { return __wcstod_internal (__nptr, __endptr, 0); }
503 extern __inline long int wcstol (__const wchar_t *__restrict __nptr,
504 wchar_t **__restrict __endptr,
506 { return __wcstol_internal (__nptr, __endptr, __base, 0); }
507 extern __inline unsigned long int wcstoul (__const wchar_t *__restrict __nptr,
508 wchar_t **__restrict __endptr,
510 { return __wcstoul_internal (__nptr, __endptr, __base, 0); }
513 extern __inline float wcstof (__const wchar_t *__restrict __nptr,
514 wchar_t **__restrict __endptr) __THROW
515 { return __wcstof_internal (__nptr, __endptr, 0); }
516 extern __inline long double wcstold (__const wchar_t *__restrict __nptr,
517 wchar_t **__restrict __endptr) __THROW
518 { return __wcstold_internal (__nptr, __endptr, 0); }
522 extern __inline long long int wcstoq (__const wchar_t *__restrict __nptr,
523 wchar_t **__restrict __endptr,
525 { return __wcstoll_internal (__nptr, __endptr, __base, 0); }
527 extern __inline unsigned long long int wcstouq (__const wchar_t *
529 wchar_t **__restrict __endptr,
531 { return __wcstoull_internal (__nptr, __endptr, __base, 0); }
532 # endif /* Use GNU. */
533 #endif /* Optimizing GCC >=2. */
538 /* Copy SRC to DEST, returning the address of the terminating L'\0' in
540 extern wchar_t *wcpcpy (wchar_t *__dest, __const wchar_t *__src) __THROW;
542 /* Copy no more than N characters of SRC to DEST, returning the address of
543 the last character written into DEST. */
544 extern wchar_t *wcpncpy (wchar_t *__dest, __const wchar_t *__src, size_t __n)
549 /* Wide character I/O functions. */
550 #if defined __USE_ISOC99 || defined __USE_UNIX98
552 /* Select orientation for stream. */
553 extern int fwide (__FILE *__fp, int __mode) __THROW;
556 /* Write formatted output to STREAM. */
557 extern int fwprintf (__FILE *__restrict __stream,
558 __const wchar_t *__restrict __format, ...)
559 __THROW /* __attribute__ ((__format__ (__wprintf__, 2, 3))) */;
560 /* Write formatted output to stdout. */
561 extern int wprintf (__const wchar_t *__restrict __format, ...)
562 __THROW /* __attribute__ ((__format__ (__wprintf__, 1, 2))) */;
563 /* Write formatted output of at most N characters to S. */
564 extern int swprintf (wchar_t *__restrict __s, size_t __n,
565 __const wchar_t *__restrict __format, ...)
566 __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 4))) */;
568 /* Write formatted output to S from argument list ARG. */
569 extern int vfwprintf (__FILE *__restrict __s,
570 __const wchar_t *__restrict __format,
571 __gnuc_va_list __arg)
572 __THROW /* __attribute__ ((__format__ (__wprintf__, 2, 0))) */;
573 /* Write formatted output to stdout from argument list ARG. */
574 extern int vwprintf (__const wchar_t *__restrict __format,
575 __gnuc_va_list __arg)
576 __THROW /* __attribute__ ((__format__ (__wprintf__, 1, 0))) */;
577 /* Write formatted output of at most N character to S from argument
579 extern int vswprintf (wchar_t *__restrict __s, size_t __n,
580 __const wchar_t *__restrict __format,
581 __gnuc_va_list __arg)
582 __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */;
585 /* Read formatted input from STREAM. */
586 extern int fwscanf (__FILE *__restrict __stream,
587 __const wchar_t *__restrict __format, ...)
588 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
589 /* Read formatted input from stdin. */
590 extern int wscanf (__const wchar_t *__restrict __format, ...)
591 __THROW /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;
592 /* Read formatted input from S. */
593 extern int swscanf (__const wchar_t *__restrict __s,
594 __const wchar_t *__restrict __format, ...)
595 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
596 #endif /* Use ISO C99 and Unix98. */
599 /* Read formatted input from S into argument list ARG. */
600 extern int vfwscanf (__FILE *__restrict __s,
601 __const wchar_t *__restrict __format,
602 __gnuc_va_list __arg)
603 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
604 /* Read formatted input from stdin into argument list ARG. */
605 extern int vwscanf (__const wchar_t *__restrict __format,
606 __gnuc_va_list __arg)
607 __THROW /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */;
608 /* Read formatted input from S into argument list ARG. */
609 extern int vswscanf (__const wchar_t *__restrict __s,
610 __const wchar_t *__restrict __format,
611 __gnuc_va_list __arg)
612 __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
613 #endif /* Use ISO C99. */
616 /* Read a character from STREAM. */
617 extern wint_t fgetwc (__FILE *__stream) __THROW;
618 extern wint_t getwc (__FILE *__stream) __THROW;
620 /* Read a character from stdin. */
621 extern wint_t getwchar (void) __THROW;
624 /* Write a character to STREAM. */
625 extern wint_t fputwc (wchar_t __wc, __FILE *__stream) __THROW;
626 extern wint_t putwc (wchar_t __wc, __FILE *__stream) __THROW;
628 /* Write a character to stdout. */
629 extern wint_t putwchar (wchar_t __wc) __THROW;
632 /* Get a newline-terminated wide character string of finite length
634 extern wchar_t *fgetws (wchar_t *__restrict __ws, int __n,
635 __FILE *__restrict __stream) __THROW;
637 /* Write a string to STREAM. */
638 extern int fputws (__const wchar_t *__restrict __ws,
639 __FILE *__restrict __stream) __THROW;
642 /* Push a character back onto the input buffer of STREAM. */
643 extern wint_t ungetwc (wint_t __wc, __FILE *__stream) __THROW;
647 /* These are defined to be equivalent to the `char' functions defined
649 extern wint_t getwc_unlocked (__FILE *__stream) __THROW;
650 extern wint_t getwchar_unlocked (void) __THROW;
652 /* This is the wide character version of a GNU extension. */
653 extern wint_t fgetwc_unlocked (__FILE *__stream) __THROW;
655 /* Faster version when locking is not necessary. */
656 extern wint_t fputwc_unlocked (wchar_t __wc, __FILE *__stream) __THROW;
658 /* These are defined to be equivalent to the `char' functions defined
660 extern wint_t putwc_unlocked (wchar_t __wc, __FILE *__stream) __THROW;
661 extern wint_t putwchar_unlocked (wchar_t __wc) __THROW;
664 /* This function does the same as `fgetws' but does not lock the stream. */
665 extern wchar_t *fgetws_unlocked (wchar_t *__restrict __ws, int __n,
666 __FILE *__restrict __stream) __THROW;
668 /* This function does the same as `fputws' but does not lock the stream. */
669 extern int fputws_unlocked (__const wchar_t *__restrict __ws,
670 __FILE *__restrict __stream) __THROW;
674 /* Format TP into S according to FORMAT.
675 Write no more than MAXSIZE wide characters and return the number
676 of wide characters written, or 0 if it would exceed MAXSIZE. */
677 extern size_t wcsftime (wchar_t *__restrict __s, size_t __maxsize,
678 __const wchar_t *__restrict __format,
679 __const struct tm *__restrict __tp) __THROW;
681 /* The X/Open standard demands that most of the functions defined in
682 the <wctype.h> header must also appear here. This is probably
683 because some X/Open members wrote their implementation before the
684 ISO C standard was published and introduced the better solution.
685 We have to provide these definitions for compliance reasons but we
686 do this nonsense only if really necessary. */
687 #if defined __USE_UNIX98 && !defined __USE_GNU
688 # define __need_iswxxx
694 #endif /* _WCHAR_H defined */