1 /* Copyright (C) 1995-2004,2005,2006 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>
32 /* Get FILE definition. */
33 # define __need___FILE
38 /* Get va_list definition. */
39 # define __need___va_list
42 /* Get size_t, wchar_t, wint_t and NULL from <stddef.h>. */
43 # define __need_size_t
44 # define __need_wchar_t
50 #include <bits/wchar.h>
52 /* We try to get wint_t from <stddef.h>, but not all GCC versions define it
53 there. So define it ourselves if it remains undefined. */
55 /* Integral type unchanged by default argument promotions that can
56 hold any value corresponding to members of the extended character
57 set, as well as at least one value that does not correspond to any
58 member of the extended character set. */
60 typedef unsigned int wint_t;
62 /* Work around problems with the <stddef.h> file which doesn't put
63 wint_t in the std namespace. */
64 # if defined __cplusplus && defined _GLIBCPP_USE_NAMESPACES \
65 && defined __WINT_TYPE__
67 typedef __WINT_TYPE__
wint_t;
73 #ifndef __mbstate_t_defined
74 # define __mbstate_t_defined 1
75 /* Conversion state information. */
83 } __value
; /* Value so far. */
86 #undef __need_mbstate_t
89 /* The rest of the file is only used if used if __need_mbstate_t is not
95 typedef __mbstate_t
mbstate_t;
98 __USING_NAMESPACE_C99(mbstate_t)
102 /* These constants might also be defined in <inttypes.h>. */
103 # define WCHAR_MIN __WCHAR_MIN
104 # define WCHAR_MAX __WCHAR_MAX
108 # define WEOF (0xffffffffu)
111 /* For XPG4 compliance we have to define the stuff from <wctype.h> here
113 #if defined __USE_XOPEN && !defined __USE_UNIX98
120 __BEGIN_NAMESPACE_STD
121 /* This incomplete type is defined in <time.h> but needed here because
124 /* XXX We have to clean this up at some point. Since tm is in the std
125 namespace but wcsftime is in __c99 the type wouldn't be found
126 without inserting it in the global namespace. */
127 __USING_NAMESPACE_STD(tm
)
131 __BEGIN_NAMESPACE_C99
132 /* Copy SRC to DEST. */
133 extern wchar_t *wcscpy (wchar_t *__restrict __dest
,
134 __const
wchar_t *__restrict __src
) __THROW
;
135 /* Copy no more than N wide-characters of SRC to DEST. */
136 extern wchar_t *wcsncpy (wchar_t *__restrict __dest
,
137 __const
wchar_t *__restrict __src
, size_t __n
)
140 /* Append SRC onto DEST. */
141 extern wchar_t *wcscat (wchar_t *__restrict __dest
,
142 __const
wchar_t *__restrict __src
) __THROW
;
143 /* Append no more than N wide-characters of SRC onto DEST. */
144 extern wchar_t *wcsncat (wchar_t *__restrict __dest
,
145 __const
wchar_t *__restrict __src
, size_t __n
)
148 /* Compare S1 and S2. */
149 extern int wcscmp (__const
wchar_t *__s1
, __const
wchar_t *__s2
)
150 __THROW __attribute_pure__
;
151 /* Compare N wide-characters of S1 and S2. */
152 extern int wcsncmp (__const
wchar_t *__s1
, __const
wchar_t *__s2
, size_t __n
)
153 __THROW __attribute_pure__
;
157 /* Compare S1 and S2, ignoring case. */
158 extern int wcscasecmp (__const
wchar_t *__s1
, __const
wchar_t *__s2
) __THROW
;
160 /* Compare no more than N chars of S1 and S2, ignoring case. */
161 extern int wcsncasecmp (__const
wchar_t *__s1
, __const
wchar_t *__s2
,
164 /* Similar to the two functions above but take the information from
165 the provided locale and not the global locale. */
166 # include <xlocale.h>
168 extern int wcscasecmp_l (__const
wchar_t *__s1
, __const
wchar_t *__s2
,
169 __locale_t __loc
) __THROW
;
171 extern int wcsncasecmp_l (__const
wchar_t *__s1
, __const
wchar_t *__s2
,
172 size_t __n
, __locale_t __loc
) __THROW
;
175 __BEGIN_NAMESPACE_C99
176 /* Compare S1 and S2, both interpreted as appropriate to the
177 LC_COLLATE category of the current locale. */
178 extern int wcscoll (__const
wchar_t *__s1
, __const
wchar_t *__s2
) __THROW
;
179 /* Transform S2 into array pointed to by S1 such that if wcscmp is
180 applied to two transformed strings the result is the as applying
181 `wcscoll' to the original strings. */
182 extern size_t wcsxfrm (wchar_t *__restrict __s1
,
183 __const
wchar_t *__restrict __s2
, size_t __n
) __THROW
;
187 /* Similar to the two functions above but take the information from
188 the provided locale and not the global locale. */
190 /* Compare S1 and S2, both interpreted as appropriate to the
191 LC_COLLATE category of the given locale. */
192 extern int wcscoll_l (__const
wchar_t *__s1
, __const
wchar_t *__s2
,
193 __locale_t __loc
) __THROW
;
195 /* Transform S2 into array pointed to by S1 such that if wcscmp is
196 applied to two transformed strings the result is the as applying
197 `wcscoll' to the original strings. */
198 extern size_t wcsxfrm_l (wchar_t *__s1
, __const
wchar_t *__s2
,
199 size_t __n
, __locale_t __loc
) __THROW
;
201 /* Duplicate S, returning an identical malloc'd string. */
202 extern wchar_t *wcsdup (__const
wchar_t *__s
) __THROW __attribute_malloc__
;
205 __BEGIN_NAMESPACE_C99
206 /* Find the first occurrence of WC in WCS. */
207 extern wchar_t *wcschr (__const
wchar_t *__wcs
, wchar_t __wc
)
208 __THROW __attribute_pure__
;
209 /* Find the last occurrence of WC in WCS. */
210 extern wchar_t *wcsrchr (__const
wchar_t *__wcs
, wchar_t __wc
)
211 __THROW __attribute_pure__
;
215 /* This function is similar to `wcschr'. But it returns a pointer to
216 the closing NUL wide character in case C is not found in S. */
217 extern wchar_t *wcschrnul (__const
wchar_t *__s
, wchar_t __wc
)
218 __THROW __attribute_pure__
;
221 __BEGIN_NAMESPACE_C99
222 /* Return the length of the initial segmet of WCS which
223 consists entirely of wide characters not in REJECT. */
224 extern size_t wcscspn (__const
wchar_t *__wcs
, __const
wchar_t *__reject
)
225 __THROW __attribute_pure__
;
226 /* Return the length of the initial segmet of WCS which
227 consists entirely of wide characters in ACCEPT. */
228 extern size_t wcsspn (__const
wchar_t *__wcs
, __const
wchar_t *__accept
)
229 __THROW __attribute_pure__
;
230 /* Find the first occurrence in WCS of any character in ACCEPT. */
231 extern wchar_t *wcspbrk (__const
wchar_t *__wcs
, __const
wchar_t *__accept
)
232 __THROW __attribute_pure__
;
233 /* Find the first occurrence of NEEDLE in HAYSTACK. */
234 extern wchar_t *wcsstr (__const
wchar_t *__haystack
, __const
wchar_t *__needle
)
235 __THROW __attribute_pure__
;
237 /* Divide WCS into tokens separated by characters in DELIM. */
238 extern wchar_t *wcstok (wchar_t *__restrict __s
,
239 __const
wchar_t *__restrict __delim
,
240 wchar_t **__restrict __ptr
) __THROW
;
242 /* Return the number of wide characters in S. */
243 extern size_t wcslen (__const
wchar_t *__s
) __THROW __attribute_pure__
;
247 /* Another name for `wcsstr' from XPG4. */
248 extern wchar_t *wcswcs (__const
wchar_t *__haystack
, __const
wchar_t *__needle
)
249 __THROW __attribute_pure__
;
253 /* Return the number of wide characters in S, but at most MAXLEN. */
254 extern size_t wcsnlen (__const
wchar_t *__s
, size_t __maxlen
)
255 __THROW __attribute_pure__
;
259 __BEGIN_NAMESPACE_C99
260 /* Search N wide characters of S for C. */
261 extern wchar_t *wmemchr (__const
wchar_t *__s
, wchar_t __c
, size_t __n
)
262 __THROW __attribute_pure__
;
264 /* Compare N wide characters of S1 and S2. */
265 extern int wmemcmp (__const
wchar_t *__restrict __s1
,
266 __const
wchar_t *__restrict __s2
, size_t __n
)
267 __THROW __attribute_pure__
;
269 /* Copy N wide characters of SRC to DEST. */
270 extern wchar_t *wmemcpy (wchar_t *__restrict __s1
,
271 __const
wchar_t *__restrict __s2
, size_t __n
) __THROW
;
273 /* Copy N wide characters of SRC to DEST, guaranteeing
274 correct behavior for overlapping strings. */
275 extern wchar_t *wmemmove (wchar_t *__s1
, __const
wchar_t *__s2
, size_t __n
)
278 /* Set N wide characters of S to C. */
279 extern wchar_t *wmemset (wchar_t *__s
, wchar_t __c
, size_t __n
) __THROW
;
283 /* Copy N wide characters of SRC to DEST and return pointer to following
285 extern wchar_t *wmempcpy (wchar_t *__restrict __s1
,
286 __const
wchar_t *__restrict __s2
, size_t __n
)
291 __BEGIN_NAMESPACE_C99
292 /* Determine whether C constitutes a valid (one-byte) multibyte
294 extern wint_t btowc (int __c
) __THROW
;
296 /* Determine whether C corresponds to a member of the extended
297 character set whose multibyte representation is a single byte. */
298 extern int wctob (wint_t __c
) __THROW
;
300 /* Determine whether PS points to an object representing the initial
302 extern int mbsinit (__const
mbstate_t *__ps
) __THROW __attribute_pure__
;
304 /* Write wide character representation of multibyte character pointed
306 extern size_t mbrtowc (wchar_t *__restrict __pwc
,
307 __const
char *__restrict __s
, size_t __n
,
308 mbstate_t *__p
) __THROW
;
310 /* Write multibyte representation of wide character WC to S. */
311 extern size_t wcrtomb (char *__restrict __s
, wchar_t __wc
,
312 mbstate_t *__restrict __ps
) __THROW
;
314 /* Return number of bytes in multibyte character pointed to by S. */
315 extern size_t __mbrlen (__const
char *__restrict __s
, size_t __n
,
316 mbstate_t *__restrict __ps
) __THROW
;
317 extern size_t mbrlen (__const
char *__restrict __s
, size_t __n
,
318 mbstate_t *__restrict __ps
) __THROW
;
321 #ifdef __USE_EXTERN_INLINES
322 /* Define inline function as optimization. */
324 /* We can use the BTOWC and WCTOB optimizations since we know that all
325 locales must use ASCII encoding for the values in the ASCII range
326 and because the wchar_t encoding is always ISO 10646. */
327 extern wint_t __btowc_alias (int __c
) __asm ("btowc");
328 extern __inline
wint_t
329 __NTH (btowc (int __c
))
330 { return (__builtin_constant_p (__c
) && __c
>= '\0' && __c
<= '\x7f'
331 ? (wint_t) __c
: __btowc_alias (__c
)); }
333 extern int __wctob_alias (wint_t __c
) __asm ("wctob");
335 __NTH (wctob (wint_t __wc
))
336 { return (__builtin_constant_p (__wc
) && __wc
>= L
'\0' && __wc
<= L
'\x7f'
337 ? (int) __wc
: __wctob_alias (__wc
)); }
339 extern __inline
size_t
340 __NTH (mbrlen (__const
char *__restrict __s
, size_t __n
,
341 mbstate_t *__restrict __ps
))
342 { return (__ps
!= NULL
343 ? mbrtowc (NULL
, __s
, __n
, __ps
) : __mbrlen (__s
, __n
, NULL
)); }
346 __BEGIN_NAMESPACE_C99
347 /* Write wide character representation of multibyte character string
349 extern size_t mbsrtowcs (wchar_t *__restrict __dst
,
350 __const
char **__restrict __src
, size_t __len
,
351 mbstate_t *__restrict __ps
) __THROW
;
353 /* Write multibyte character representation of wide character string
355 extern size_t wcsrtombs (char *__restrict __dst
,
356 __const
wchar_t **__restrict __src
, size_t __len
,
357 mbstate_t *__restrict __ps
) __THROW
;
362 /* Write wide character representation of at most NMC bytes of the
363 multibyte character string SRC to DST. */
364 extern size_t mbsnrtowcs (wchar_t *__restrict __dst
,
365 __const
char **__restrict __src
, size_t __nmc
,
366 size_t __len
, mbstate_t *__restrict __ps
) __THROW
;
368 /* Write multibyte character representation of at most NWC characters
369 from the wide character string SRC to DST. */
370 extern size_t wcsnrtombs (char *__restrict __dst
,
371 __const
wchar_t **__restrict __src
,
372 size_t __nwc
, size_t __len
,
373 mbstate_t *__restrict __ps
) __THROW
;
377 /* The following functions are extensions found in X/Open CAE. */
379 /* Determine number of column positions required for C. */
380 extern int wcwidth (wchar_t __c
) __THROW
;
382 /* Determine number of column positions required for first N wide
383 characters (or fewer if S ends before this) in S. */
384 extern int wcswidth (__const
wchar_t *__s
, size_t __n
) __THROW
;
385 #endif /* Use X/Open. */
388 __BEGIN_NAMESPACE_C99
389 /* Convert initial portion of the wide string NPTR to `double'
391 extern double wcstod (__const
wchar_t *__restrict __nptr
,
392 wchar_t **__restrict __endptr
) __THROW
;
395 /* Likewise for `float' and `long double' sizes of floating-point numbers. */
396 extern float wcstof (__const
wchar_t *__restrict __nptr
,
397 wchar_t **__restrict __endptr
) __THROW
;
398 extern long double wcstold (__const
wchar_t *__restrict __nptr
,
399 wchar_t **__restrict __endptr
) __THROW
;
403 /* Convert initial portion of wide string NPTR to `long int'
405 extern long int wcstol (__const
wchar_t *__restrict __nptr
,
406 wchar_t **__restrict __endptr
, int __base
) __THROW
;
408 /* Convert initial portion of wide string NPTR to `unsigned long int'
410 extern unsigned long int wcstoul (__const
wchar_t *__restrict __nptr
,
411 wchar_t **__restrict __endptr
, int __base
)
414 #if defined __USE_ISOC99 || (defined __GNUC__ && defined __USE_GNU)
415 /* Convert initial portion of wide string NPTR to `long int'
418 extern long long int wcstoll (__const
wchar_t *__restrict __nptr
,
419 wchar_t **__restrict __endptr
, int __base
)
422 /* Convert initial portion of wide string NPTR to `unsigned long long int'
425 extern unsigned long long int wcstoull (__const
wchar_t *__restrict __nptr
,
426 wchar_t **__restrict __endptr
,
428 #endif /* ISO C99 or GCC and GNU. */
431 #if defined __GNUC__ && defined __USE_GNU
432 /* Convert initial portion of wide string NPTR to `long int'
435 extern long long int wcstoq (__const
wchar_t *__restrict __nptr
,
436 wchar_t **__restrict __endptr
, int __base
)
439 /* Convert initial portion of wide string NPTR to `unsigned long long int'
442 extern unsigned long long int wcstouq (__const
wchar_t *__restrict __nptr
,
443 wchar_t **__restrict __endptr
,
445 #endif /* GCC and use GNU. */
448 /* The concept of one static locale per category is not very well
449 thought out. Many applications will need to process its data using
450 information from several different locales. Another application is
451 the implementation of the internationalization handling in the
452 upcoming ISO C++ standard library. To support this another set of
453 the functions using locale data exist which have an additional
456 Attention: all these functions are *not* standardized in any form.
457 This is a proof-of-concept implementation. */
459 /* Structure for reentrant locale using functions. This is an
460 (almost) opaque type for the user level programs. */
461 # include <xlocale.h>
463 /* Special versions of the functions above which take the locale to
464 use as an additional parameter. */
465 extern long int wcstol_l (__const
wchar_t *__restrict __nptr
,
466 wchar_t **__restrict __endptr
, int __base
,
467 __locale_t __loc
) __THROW
;
469 extern unsigned long int wcstoul_l (__const
wchar_t *__restrict __nptr
,
470 wchar_t **__restrict __endptr
,
471 int __base
, __locale_t __loc
) __THROW
;
474 extern long long int wcstoll_l (__const
wchar_t *__restrict __nptr
,
475 wchar_t **__restrict __endptr
,
476 int __base
, __locale_t __loc
) __THROW
;
479 extern unsigned long long int wcstoull_l (__const
wchar_t *__restrict __nptr
,
480 wchar_t **__restrict __endptr
,
481 int __base
, __locale_t __loc
)
484 extern double wcstod_l (__const
wchar_t *__restrict __nptr
,
485 wchar_t **__restrict __endptr
, __locale_t __loc
)
488 extern float wcstof_l (__const
wchar_t *__restrict __nptr
,
489 wchar_t **__restrict __endptr
, __locale_t __loc
)
492 extern long double wcstold_l (__const
wchar_t *__restrict __nptr
,
493 wchar_t **__restrict __endptr
,
494 __locale_t __loc
) __THROW
;
498 /* The internal entry points for `wcstoX' take an extra flag argument
499 saying whether or not to parse locale-dependent number grouping. */
500 extern double __wcstod_internal (__const
wchar_t *__restrict __nptr
,
501 wchar_t **__restrict __endptr
, int __group
)
503 extern float __wcstof_internal (__const
wchar_t *__restrict __nptr
,
504 wchar_t **__restrict __endptr
, int __group
)
506 extern long double __wcstold_internal (__const
wchar_t *__restrict __nptr
,
507 wchar_t **__restrict __endptr
,
508 int __group
) __THROW
;
510 #if !defined __wcstol_internal_defined \
511 && defined __OPTIMIZE__ && __GNUC__ >= 2
512 extern long int __wcstol_internal (__const
wchar_t *__restrict __nptr
,
513 wchar_t **__restrict __endptr
,
514 int __base
, int __group
) __THROW
;
515 # define __wcstol_internal_defined 1
517 #if !defined __wcstoul_internal_defined \
518 && defined __OPTIMIZE__ && __GNUC__ >= 2
519 extern unsigned long int __wcstoul_internal (__const
wchar_t *__restrict __npt
,
520 wchar_t **__restrict __endptr
,
521 int __base
, int __group
) __THROW
;
522 # define __wcstoul_internal_defined 1
524 #if !defined __wcstoll_internal_defined \
525 && defined __OPTIMIZE__ && __GNUC__ >= 2
527 extern long long int __wcstoll_internal (__const
wchar_t *__restrict __nptr
,
528 wchar_t **__restrict __endptr
,
529 int __base
, int __group
) __THROW
;
530 # define __wcstoll_internal_defined 1
532 #if !defined __wcstoull_internal_defined \
533 && defined __OPTIMIZE__ && __GNUC__ >= 2
535 extern unsigned long long int __wcstoull_internal (__const
wchar_t *
540 int __group
) __THROW
;
541 # define __wcstoull_internal_defined 1
545 #if defined __OPTIMIZE__ && __GNUC__ >= 2
546 /* Define inline functions which call the internal entry points. */
547 __BEGIN_NAMESPACE_C99
549 extern __inline
double
550 __NTH (wcstod (__const
wchar_t *__restrict __nptr
,
551 wchar_t **__restrict __endptr
))
552 { return __wcstod_internal (__nptr
, __endptr
, 0); }
553 extern __inline
long int
554 __NTH (wcstol (__const
wchar_t *__restrict __nptr
,
555 wchar_t **__restrict __endptr
, int __base
))
556 { return __wcstol_internal (__nptr
, __endptr
, __base
, 0); }
557 extern __inline
unsigned long int
558 __NTH (wcstoul (__const
wchar_t *__restrict __nptr
,
559 wchar_t **__restrict __endptr
, int __base
))
560 { return __wcstoul_internal (__nptr
, __endptr
, __base
, 0); }
564 extern __inline
float
565 __NTH (wcstof (__const
wchar_t *__restrict __nptr
,
566 wchar_t **__restrict __endptr
))
567 { return __wcstof_internal (__nptr
, __endptr
, 0); }
568 # ifndef __LDBL_COMPAT
569 extern __inline
long double
570 __NTH (wcstold (__const
wchar_t *__restrict __nptr
,
571 wchar_t **__restrict __endptr
))
572 { return __wcstold_internal (__nptr
, __endptr
, 0); }
575 extern __inline
long long int
576 __NTH (wcstoq (__const
wchar_t *__restrict __nptr
,
577 wchar_t **__restrict __endptr
, int __base
))
578 { return __wcstoll_internal (__nptr
, __endptr
, __base
, 0); }
580 extern __inline
unsigned long long int
581 __NTH (wcstouq (__const
wchar_t *__restrict __nptr
,
582 wchar_t **__restrict __endptr
, int __base
))
583 { return __wcstoull_internal (__nptr
, __endptr
, __base
, 0); }
584 # endif /* Use GNU. */
585 #endif /* Optimizing GCC >=2. */
589 /* Copy SRC to DEST, returning the address of the terminating L'\0' in
591 extern wchar_t *wcpcpy (wchar_t *__dest
, __const
wchar_t *__src
) __THROW
;
593 /* Copy no more than N characters of SRC to DEST, returning the address of
594 the last character written into DEST. */
595 extern wchar_t *wcpncpy (wchar_t *__dest
, __const
wchar_t *__src
, size_t __n
)
600 /* Wide character I/O functions. */
601 #if defined __USE_ISOC99 || defined __USE_UNIX98
602 __BEGIN_NAMESPACE_C99
604 /* Select orientation for stream. */
605 extern int fwide (__FILE
*__fp
, int __mode
) __THROW
;
608 /* Write formatted output to STREAM.
610 This function is a possible cancellation point and therefore not
611 marked with __THROW. */
612 extern int fwprintf (__FILE
*__restrict __stream
,
613 __const
wchar_t *__restrict __format
, ...)
614 /* __attribute__ ((__format__ (__wprintf__, 2, 3))) */;
615 /* Write formatted output to stdout.
617 This function is a possible cancellation point and therefore not
618 marked with __THROW. */
619 extern int wprintf (__const
wchar_t *__restrict __format
, ...)
620 /* __attribute__ ((__format__ (__wprintf__, 1, 2))) */;
621 /* Write formatted output of at most N characters to S. */
622 extern int swprintf (wchar_t *__restrict __s
, size_t __n
,
623 __const
wchar_t *__restrict __format
, ...)
624 __THROW
/* __attribute__ ((__format__ (__wprintf__, 3, 4))) */;
626 /* Write formatted output to S from argument list ARG.
628 This function is a possible cancellation point and therefore not
629 marked with __THROW. */
630 extern int vfwprintf (__FILE
*__restrict __s
,
631 __const
wchar_t *__restrict __format
,
632 __gnuc_va_list __arg
)
633 /* __attribute__ ((__format__ (__wprintf__, 2, 0))) */;
634 /* Write formatted output to stdout from argument list ARG.
636 This function is a possible cancellation point and therefore not
637 marked with __THROW. */
638 extern int vwprintf (__const
wchar_t *__restrict __format
,
639 __gnuc_va_list __arg
)
640 /* __attribute__ ((__format__ (__wprintf__, 1, 0))) */;
641 /* Write formatted output of at most N character to S from argument
643 extern int vswprintf (wchar_t *__restrict __s
, size_t __n
,
644 __const
wchar_t *__restrict __format
,
645 __gnuc_va_list __arg
)
646 __THROW
/* __attribute__ ((__format__ (__wprintf__, 3, 0))) */;
649 /* Read formatted input from STREAM.
651 This function is a possible cancellation point and therefore not
652 marked with __THROW. */
653 extern int fwscanf (__FILE
*__restrict __stream
,
654 __const
wchar_t *__restrict __format
, ...)
655 /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
656 /* Read formatted input from stdin.
658 This function is a possible cancellation point and therefore not
659 marked with __THROW. */
660 extern int wscanf (__const
wchar_t *__restrict __format
, ...)
661 /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;
662 /* Read formatted input from S. */
663 extern int swscanf (__const
wchar_t *__restrict __s
,
664 __const
wchar_t *__restrict __format
, ...)
665 __THROW
/* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
668 #endif /* Use ISO C99 and Unix98. */
671 __BEGIN_NAMESPACE_C99
673 /* Read formatted input from S into argument list ARG.
675 This function is a possible cancellation point and therefore not
676 marked with __THROW. */
677 extern int vfwscanf (__FILE
*__restrict __s
,
678 __const
wchar_t *__restrict __format
,
679 __gnuc_va_list __arg
)
680 /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
681 /* Read formatted input from stdin into argument list ARG.
683 This function is a possible cancellation point and therefore not
684 marked with __THROW. */
685 extern int vwscanf (__const
wchar_t *__restrict __format
,
686 __gnuc_va_list __arg
)
687 /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */;
688 /* Read formatted input from S into argument list ARG. */
689 extern int vswscanf (__const
wchar_t *__restrict __s
,
690 __const
wchar_t *__restrict __format
,
691 __gnuc_va_list __arg
)
692 __THROW
/* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
695 #endif /* Use ISO C99. */
698 __BEGIN_NAMESPACE_C99
699 /* Read a character from STREAM.
701 These functions are possible cancellation points and therefore not
702 marked with __THROW. */
703 extern wint_t fgetwc (__FILE
*__stream
);
704 extern wint_t getwc (__FILE
*__stream
);
706 /* Read a character from stdin.
708 This function is a possible cancellation point and therefore not
709 marked with __THROW. */
710 extern wint_t getwchar (void);
713 /* Write a character to STREAM.
715 These functions are possible cancellation points and therefore not
716 marked with __THROW. */
717 extern wint_t fputwc (wchar_t __wc
, __FILE
*__stream
);
718 extern wint_t putwc (wchar_t __wc
, __FILE
*__stream
);
720 /* Write a character to stdout.
722 This function is a possible cancellation points and therefore not
723 marked with __THROW. */
724 extern wint_t putwchar (wchar_t __wc
);
727 /* Get a newline-terminated wide character string of finite length
730 This function is a possible cancellation points and therefore not
731 marked with __THROW. */
732 extern wchar_t *fgetws (wchar_t *__restrict __ws
, int __n
,
733 __FILE
*__restrict __stream
);
735 /* Write a string to STREAM.
737 This function is a possible cancellation points and therefore not
738 marked with __THROW. */
739 extern int fputws (__const
wchar_t *__restrict __ws
,
740 __FILE
*__restrict __stream
);
743 /* Push a character back onto the input buffer of STREAM.
745 This function is a possible cancellation points and therefore not
746 marked with __THROW. */
747 extern wint_t ungetwc (wint_t __wc
, __FILE
*__stream
);
752 /* These are defined to be equivalent to the `char' functions defined
755 These functions are not part of POSIX and therefore no official
756 cancellation point. But due to similarity with an POSIX interface
757 or due to the implementation they are cancellation points and
758 therefore not marked with __THROW. */
759 extern wint_t getwc_unlocked (__FILE
*__stream
);
760 extern wint_t getwchar_unlocked (void);
762 /* This is the wide character version of a GNU extension.
764 This function is not part of POSIX and therefore no official
765 cancellation point. But due to similarity with an POSIX interface
766 or due to the implementation it is a cancellation point and
767 therefore not marked with __THROW. */
768 extern wint_t fgetwc_unlocked (__FILE
*__stream
);
770 /* Faster version when locking is not necessary.
772 This function is not part of POSIX and therefore no official
773 cancellation point. But due to similarity with an POSIX interface
774 or due to the implementation it is a cancellation point and
775 therefore not marked with __THROW. */
776 extern wint_t fputwc_unlocked (wchar_t __wc
, __FILE
*__stream
);
778 /* These are defined to be equivalent to the `char' functions defined
781 These functions are not part of POSIX and therefore no official
782 cancellation point. But due to similarity with an POSIX interface
783 or due to the implementation they are cancellation points and
784 therefore not marked with __THROW. */
785 extern wint_t putwc_unlocked (wchar_t __wc
, __FILE
*__stream
);
786 extern wint_t putwchar_unlocked (wchar_t __wc
);
789 /* This function does the same as `fgetws' but does not lock the stream.
791 This function is not part of POSIX and therefore no official
792 cancellation point. But due to similarity with an POSIX interface
793 or due to the implementation it is a cancellation point and
794 therefore not marked with __THROW. */
795 extern wchar_t *fgetws_unlocked (wchar_t *__restrict __ws
, int __n
,
796 __FILE
*__restrict __stream
);
798 /* This function does the same as `fputws' but does not lock the stream.
800 This function is 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 it is a cancellation point and
803 therefore not marked with __THROW. */
804 extern int fputws_unlocked (__const
wchar_t *__restrict __ws
,
805 __FILE
*__restrict __stream
);
809 __BEGIN_NAMESPACE_C99
810 /* Format TP into S according to FORMAT.
811 Write no more than MAXSIZE wide characters and return the number
812 of wide characters written, or 0 if it would exceed MAXSIZE. */
813 extern size_t wcsftime (wchar_t *__restrict __s
, size_t __maxsize
,
814 __const
wchar_t *__restrict __format
,
815 __const
struct tm
*__restrict __tp
) __THROW
;
819 # include <xlocale.h>
821 /* Similar to `wcsftime' but takes the information from
822 the provided locale and not the global locale. */
823 extern size_t wcsftime_l (wchar_t *__restrict __s
, size_t __maxsize
,
824 __const
wchar_t *__restrict __format
,
825 __const
struct tm
*__restrict __tp
,
826 __locale_t __loc
) __THROW
;
829 /* The X/Open standard demands that most of the functions defined in
830 the <wctype.h> header must also appear here. This is probably
831 because some X/Open members wrote their implementation before the
832 ISO C standard was published and introduced the better solution.
833 We have to provide these definitions for compliance reasons but we
834 do this nonsense only if really necessary. */
835 #if defined __USE_UNIX98 && !defined __USE_GNU
836 # define __need_iswxxx
840 /* Define some macros helping to catch buffer overflows. */
841 #if __USE_FORTIFY_LEVEL > 0 && !defined __cplusplus
842 # include <bits/wchar2.h>
846 # include <bits/wchar-ldbl.h>
851 #endif /* _WCHAR_H defined */