include/wchar.h

   1 /* Copyright (C) 1995-2002, 2003 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, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 /*
  20  *      ISO C99 Standard: 7.24
  21  *      Extended multibyte and wide character utilities <wchar.h>
  22  */
  23
  24 #ifndef _WCHAR_H
  25
  26 #ifndef __need_mbstate_t
  27 # define _WCHAR_H 1
  28 # include <features.h>
  29 #endif
  30
  31 #ifndef __UCLIBC_HAS_WCHAR__
  32 #error Attempted to include wchar.h when uClibc built without wide char support.
  33 #endif
  34
  35 #ifdef _WCHAR_H
  36 /* Get FILE definition.  */
  37 # define __need___FILE
  38 # ifdef __USE_UNIX98
  39 #  define __need_FILE
  40 # endif
  41 # include <stdio.h>
  42 /* Get va_list definition.  */
  43 # define __need___va_list
  44 # include <stdarg.h>
  45
  46 /* Get size_t, wchar_t, wint_t and NULL from <stddef.h>.  */
  47 # define __need_size_t
  48 # define __need_wchar_t
  49 # define __need_NULL
  50 #endif
  51 #define __need_wint_t
  52 #include <stddef.h>
  53
  54 #include <bits/wchar.h>
  55
  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.  */
  58 #ifndef _WINT_T
  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.  */
  63 # define _WINT_T
  64 typedef unsigned int wint_t;
  65 #else
  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__
  70 __BEGIN_NAMESPACE_STD
  71 typedef __WINT_TYPE__ wint_t;
  72 __END_NAMESPACE_STD
  73 # endif
  74 #endif
  75
  76
  77 #ifndef __mbstate_t_defined
  78 # define __mbstate_t_defined    1
  79 /* Conversion state information.  */
  80 #if 1
  81 typedef struct
  82 {
  83         wchar_t __mask;
  84         wchar_t __wc;
  85 } __mbstate_t;
  86 #else
  87 typedef struct
  88 {
  89   int __count;
  90   union
  91   {
  92     wint_t __wch;
  93     char __wchb[4];
  94   } __value;            /* Value so far.  */
  95 } __mbstate_t;
  96 #endif
  97 #endif
  98 #undef __need_mbstate_t
  99
 100
 101 /* The rest of the file is only used if used if __need_mbstate_t is not
 102    defined.  */
 103 #ifdef _WCHAR_H
 104
 105 __BEGIN_NAMESPACE_C99
 106 /* Public type.  */
 107 typedef __mbstate_t mbstate_t;
 108 __END_NAMESPACE_C99
 109 #ifdef __USE_GNU
 110 __USING_NAMESPACE_C99(mbstate_t)
 111 #endif
 112
 113 #ifndef WCHAR_MIN
 114 /* These constants might also be defined in <inttypes.h>.  */
 115 # define WCHAR_MIN __WCHAR_MIN
 116 # define WCHAR_MAX __WCHAR_MAX
 117 #endif
 118
 119 #ifndef WEOF
 120 # define WEOF (0xffffffffu)
 121 #endif
 122
 123 /* For XPG4 compliance we have to define the stuff from <wctype.h> here
 124    as well.  */
 125 #if defined __USE_XOPEN && !defined __USE_UNIX98
 126 # include <wctype.h>
 127 #endif
 128
 129
 130 __BEGIN_DECLS
 131
 132 __BEGIN_NAMESPACE_STD
 133 /* This incomplete type is defined in <time.h> but needed here because
 134    of `wcsftime'.  */
 135 struct tm;
 136 /* XXX We have to clean this up at some point.  Since tm is in the std
 137    namespace but wcsftime is in __c99 the type wouldn't be found
 138    without inserting it in the global namespace.  */
 139 __USING_NAMESPACE_STD(tm)
 140 __END_NAMESPACE_STD
 141
 142
 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)
 150      __THROW;
 151
 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)
 159      __THROW;
 160
 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__;
 168 __END_NAMESPACE_C99
 169
 170 #ifdef __USE_GNU
 171 /* Compare S1 and S2, ignoring case.  */
 172 extern int wcscasecmp (__const wchar_t *__s1, __const wchar_t *__s2) __THROW;
 173 libc_hidden_proto(wcscasecmp)
 174
 175 /* Compare no more than N chars of S1 and S2, ignoring case.  */
 176 extern int wcsncasecmp (__const wchar_t *__s1, __const wchar_t *__s2,
 177                         size_t __n) __THROW;
 178 libc_hidden_proto(wcsncasecmp)
 179
 180 #ifdef __UCLIBC_HAS_XLOCALE__
 181 /* Similar to the two functions above but take the information from
 182    the provided locale and not the global locale.  */
 183 # include <xlocale.h>
 184
 185 extern int wcscasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,
 186                          __locale_t __loc) __THROW;
 187 libc_hidden_proto(wcscasecmp_l)
 188
 189 extern int wcsncasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,
 190                           size_t __n, __locale_t __loc) __THROW;
 191 libc_hidden_proto(wcsncasecmp_l)
 192 #endif /* __UCLIBC_HAS_XLOCALE__ */
 193 #endif
 194
 195 __BEGIN_NAMESPACE_C99
 196 /* Compare S1 and S2, both interpreted as appropriate to the
 197    LC_COLLATE category of the current locale.  */
 198 extern int wcscoll (__const wchar_t *__s1, __const wchar_t *__s2) __THROW;
 199 libc_hidden_proto(wcscoll)
 200 /* Transform S2 into array pointed to by S1 such that if wcscmp is
 201    applied to two transformed strings the result is the as applying
 202    `wcscoll' to the original strings.  */
 203 extern size_t wcsxfrm (wchar_t *__restrict __s1,
 204                        __const wchar_t *__restrict __s2, size_t __n) __THROW;
 205 libc_hidden_proto(wcsxfrm)
 206 __END_NAMESPACE_C99
 207
 208 #ifdef __USE_GNU
 209 #ifdef __UCLIBC_HAS_XLOCALE__
 210 /* Similar to the two functions above but take the information from
 211    the provided locale and not the global locale.  */
 212
 213 /* Compare S1 and S2, both interpreted as appropriate to the
 214    LC_COLLATE category of the given locale.  */
 215 extern int wcscoll_l (__const wchar_t *__s1, __const wchar_t *__s2,
 216                       __locale_t __loc) __THROW;
 217 libc_hidden_proto(wcscoll_l)
 218
 219 /* Transform S2 into array pointed to by S1 such that if wcscmp is
 220    applied to two transformed strings the result is the as applying
 221    `wcscoll' to the original strings.  */
 222 extern size_t wcsxfrm_l (wchar_t *__s1, __const wchar_t *__s2,
 223                          size_t __n, __locale_t __loc) __THROW;
 224 libc_hidden_proto(wcsxfrm_l)
 225
 226 #endif /* __UCLIBC_HAS_XLOCALE__ */
 227
 228 /* Duplicate S, returning an identical malloc'd string.  */
 229 extern wchar_t *wcsdup (__const wchar_t *__s) __THROW __attribute_malloc__;
 230 #endif
 231
 232 __BEGIN_NAMESPACE_C99
 233 /* Find the first occurrence of WC in WCS.  */
 234 extern wchar_t *wcschr (__const wchar_t *__wcs, wchar_t __wc)
 235      __THROW __attribute_pure__;
 236 libc_hidden_proto(wcschr)
 237 /* Find the last occurrence of WC in WCS.  */
 238 extern wchar_t *wcsrchr (__const wchar_t *__wcs, wchar_t __wc)
 239      __THROW __attribute_pure__;
 240 __END_NAMESPACE_C99
 241
 242 #ifdef __USE_GNU
 243 /* This function is similar to `wcschr'.  But it returns a pointer to
 244    the closing NUL wide character in case C is not found in S.  */
 245 extern wchar_t *wcschrnul (__const wchar_t *__s, wchar_t __wc)
 246      __THROW __attribute_pure__;
 247 libc_hidden_proto(wcschrnul)
 248 #endif
 249
 250 __BEGIN_NAMESPACE_C99
 251 /* Return the length of the initial segmet of WCS which
 252    consists entirely of wide characters not in REJECT.  */
 253 extern size_t wcscspn (__const wchar_t *__wcs, __const wchar_t *__reject)
 254      __THROW __attribute_pure__;
 255 /* Return the length of the initial segmet of WCS which
 256    consists entirely of wide characters in  ACCEPT.  */
 257 extern size_t wcsspn (__const wchar_t *__wcs, __const wchar_t *__accept)
 258      __THROW __attribute_pure__;
 259 libc_hidden_proto(wcsspn)
 260 /* Find the first occurrence in WCS of any character in ACCEPT.  */
 261 extern wchar_t *wcspbrk (__const wchar_t *__wcs, __const wchar_t *__accept)
 262      __THROW __attribute_pure__;
 263 libc_hidden_proto(wcspbrk)
 264 /* Find the first occurrence of NEEDLE in HAYSTACK.  */
 265 extern wchar_t *wcsstr (__const wchar_t *__haystack, __const wchar_t *__needle)
 266      __THROW __attribute_pure__;
 267
 268 /* Divide WCS into tokens separated by characters in DELIM.  */
 269 extern wchar_t *wcstok (wchar_t *__restrict __s,
 270                         __const wchar_t *__restrict __delim,
 271                         wchar_t **__restrict __ptr) __THROW;
 272
 273 /* Return the number of wide characters in S.  */
 274 extern size_t wcslen (__const wchar_t *__s) __THROW __attribute_pure__;
 275 libc_hidden_proto(wcslen)
 276 __END_NAMESPACE_C99
 277
 278 #if defined __USE_XOPEN && defined __UCLIBC_SUSV3_LEGACY__
 279 /* Another name for `wcsstr' from XPG4.  */
 280 extern wchar_t *wcswcs (__const wchar_t *__haystack, __const wchar_t *__needle)
 281      __THROW __attribute_pure__;
 282 #endif
 283
 284 #ifdef __USE_GNU
 285 /* Return the number of wide characters in S, but at most MAXLEN.  */
 286 extern size_t wcsnlen (__const wchar_t *__s, size_t __maxlen)
 287      __THROW __attribute_pure__;
 288 libc_hidden_proto(wcsnlen)
 289 #endif
 290
 291
 292 __BEGIN_NAMESPACE_C99
 293 /* Search N wide characters of S for C.  */
 294 extern wchar_t *wmemchr (__const wchar_t *__s, wchar_t __c, size_t __n)
 295      __THROW __attribute_pure__;
 296 libc_hidden_proto(wmemchr)
 297
 298 /* Compare N wide characters of S1 and S2.  */
 299 extern int wmemcmp (__const wchar_t *__restrict __s1,
 300                     __const wchar_t *__restrict __s2, size_t __n)
 301      __THROW __attribute_pure__;
 302
 303 /* Copy N wide characters of SRC to DEST.  */
 304 extern wchar_t *wmemcpy (wchar_t *__restrict __s1,
 305                          __const wchar_t *__restrict __s2, size_t __n) __THROW;
 306 libc_hidden_proto(wmemcpy)
 307
 308 /* Copy N wide characters of SRC to DEST, guaranteeing
 309    correct behavior for overlapping strings.  */
 310 extern wchar_t *wmemmove (wchar_t *__s1, __const wchar_t *__s2, size_t __n)
 311      __THROW;
 312
 313 /* Set N wide characters of S to C.  */
 314 extern wchar_t *wmemset (wchar_t *__s, wchar_t __c, size_t __n) __THROW;
 315 __END_NAMESPACE_C99
 316
 317 #ifdef __USE_GNU
 318 /* Copy N wide characters of SRC to DEST and return pointer to following
 319    wide character.  */
 320 extern wchar_t *wmempcpy (wchar_t *__restrict __s1,
 321                           __const wchar_t *__restrict __s2, size_t __n)
 322      __THROW;
 323 libc_hidden_proto(wmempcpy)
 324 #endif
 325
 326
 327 __BEGIN_NAMESPACE_C99
 328 /* Determine whether C constitutes a valid (one-byte) multibyte
 329    character.  */
 330 extern wint_t btowc (int __c) __THROW;
 331 libc_hidden_proto(btowc)
 332
 333 /* Determine whether C corresponds to a member of the extended
 334    character set whose multibyte representation is a single byte.  */
 335 extern int wctob (wint_t __c) __THROW;
 336
 337 /* Determine whether PS points to an object representing the initial
 338    state.  */
 339 extern int mbsinit (__const mbstate_t *__ps) __THROW __attribute_pure__;
 340 libc_hidden_proto(mbsinit)
 341
 342 /* Write wide character representation of multibyte character pointed
 343    to by S to PWC.  */
 344 extern size_t mbrtowc (wchar_t *__restrict __pwc,
 345                        __const char *__restrict __s, size_t __n,
 346                        mbstate_t *__p) __THROW;
 347 libc_hidden_proto(mbrtowc)
 348
 349 /* Write multibyte representation of wide character WC to S.  */
 350 extern size_t wcrtomb (char *__restrict __s, wchar_t __wc,
 351                        mbstate_t *__restrict __ps) __THROW;
 352 libc_hidden_proto(wcrtomb)
 353
 354 /* Return number of bytes in multibyte character pointed to by S.  */
 355 #if 0 /* uClibc: disabled */
 356 extern size_t __mbrlen (__const char *__restrict __s, size_t __n,
 357                         mbstate_t *__restrict __ps) __THROW;
 358 #endif
 359 extern size_t mbrlen (__const char *__restrict __s, size_t __n,
 360                       mbstate_t *__restrict __ps) __THROW;
 361 libc_hidden_proto(mbrlen)
 362
 363 /* Write wide character representation of multibyte character string
 364    SRC to DST.  */
 365 extern size_t mbsrtowcs (wchar_t *__restrict __dst,
 366                          __const char **__restrict __src, size_t __len,
 367                          mbstate_t *__restrict __ps) __THROW;
 368 libc_hidden_proto(mbsrtowcs)
 369
 370 /* Write multibyte character representation of wide character string
 371    SRC to DST.  */
 372 extern size_t wcsrtombs (char *__restrict __dst,
 373                          __const wchar_t **__restrict __src, size_t __len,
 374                          mbstate_t *__restrict __ps) __THROW;
 375 libc_hidden_proto(wcsrtombs)
 376 __END_NAMESPACE_C99
 377
 378
 379 #ifdef  __USE_GNU
 380 /* Write wide character representation of at most NMC bytes of the
 381    multibyte character string SRC to DST.  */
 382 extern size_t mbsnrtowcs (wchar_t *__restrict __dst,
 383                           __const char **__restrict __src, size_t __nmc,
 384                           size_t __len, mbstate_t *__restrict __ps) __THROW;
 385 libc_hidden_proto(mbsnrtowcs)
 386
 387 /* Write multibyte character representation of at most NWC characters
 388    from the wide character string SRC to DST.  */
 389 extern size_t wcsnrtombs (char *__restrict __dst,
 390                           __const wchar_t **__restrict __src,
 391                           size_t __nwc, size_t __len,
 392                           mbstate_t *__restrict __ps) __THROW;
 393 libc_hidden_proto(wcsnrtombs)
 394 #endif  /* use GNU */
 395
 396
 397 /* The following functions are extensions found in X/Open CAE.  */
 398 #ifdef __USE_XOPEN
 399 /* Determine number of column positions required for C.  */
 400 extern int wcwidth (wchar_t __c) __THROW;
 401
 402 /* Determine number of column positions required for first N wide
 403    characters (or fewer if S ends before this) in S.  */
 404 extern int wcswidth (__const wchar_t *__s, size_t __n) __THROW;
 405 libc_hidden_proto(wcswidth)
 406 #endif  /* Use X/Open.  */
 407
 408
 409 __BEGIN_NAMESPACE_C99
 410 #ifdef __UCLIBC_HAS_FLOATS__
 411 /* Convert initial portion of the wide string NPTR to `double'
 412    representation.  */
 413 extern double wcstod (__const wchar_t *__restrict __nptr,
 414                       wchar_t **__restrict __endptr) __THROW;
 415
 416 #ifdef __USE_ISOC99
 417 /* Likewise for `float' and `long double' sizes of floating-point numbers.  */
 418 extern float wcstof (__const wchar_t *__restrict __nptr,
 419                      wchar_t **__restrict __endptr) __THROW;
 420 extern long double wcstold (__const wchar_t *__restrict __nptr,
 421                             wchar_t **__restrict __endptr) __THROW;
 422 #endif /* C99 */
 423 #endif /* __UCLIBC_HAS_FLOATS__ */
 424
 425
 426 /* Convert initial portion of wide string NPTR to `long int'
 427    representation.  */
 428 extern 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.  */
 433 extern unsigned long int wcstoul (__const wchar_t *__restrict __nptr,
 434                                   wchar_t **__restrict __endptr, int __base)
 435      __THROW;
 436
 437 #if defined __USE_ISOC99 || (defined __GNUC__ && defined __USE_GNU)
 438 /* Convert initial portion of wide string NPTR to `long int'
 439    representation.  */
 440 __extension__
 441 extern 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__
 448 extern unsigned long long int wcstoull (__const wchar_t *__restrict __nptr,
 449                                         wchar_t **__restrict __endptr,
 450                                         int __base) __THROW;
 451 #endif /* ISO C99 or GCC and GNU.  */
 452 __END_NAMESPACE_C99
 453
 454 #if defined __GNUC__ && defined __USE_GNU
 455 /* Convert initial portion of wide string NPTR to `long int'
 456    representation.  */
 457 __extension__
 458 extern long long int wcstoq (__const wchar_t *__restrict __nptr,
 459                              wchar_t **__restrict __endptr, int __base)
 460      __THROW;
 461
 462 /* Convert initial portion of wide string NPTR to `unsigned long long int'
 463    representation.  */
 464 __extension__
 465 extern unsigned long long int wcstouq (__const wchar_t *__restrict __nptr,
 466                                        wchar_t **__restrict __endptr,
 467                                        int __base) __THROW;
 468 #endif /* GCC and use GNU.  */
 469
 470 #ifdef __USE_GNU
 471 #ifdef __UCLIBC_HAS_XLOCALE__
 472 /* The concept of one static locale per category is not very well
 473    thought out.  Many applications will need to process its data using
 474    information from several different locales.  Another application is
 475    the implementation of the internationalization handling in the
 476    upcoming ISO C++ standard library.  To support this another set of
 477    the functions using locale data exist which have an additional
 478    argument.
 479
 480    Attention: all these functions are *not* standardized in any form.
 481    This is a proof-of-concept implementation.  */
 482
 483 /* Structure for reentrant locale using functions.  This is an
 484    (almost) opaque type for the user level programs.  */
 485 # include <xlocale.h>
 486
 487 /* Special versions of the functions above which take the locale to
 488    use as an additional parameter.  */
 489 extern long int wcstol_l (__const wchar_t *__restrict __nptr,
 490                           wchar_t **__restrict __endptr, int __base,
 491                           __locale_t __loc) __THROW;
 492
 493 extern unsigned long int wcstoul_l (__const wchar_t *__restrict __nptr,
 494                                     wchar_t **__restrict __endptr,
 495                                     int __base, __locale_t __loc) __THROW;
 496
 497 __extension__
 498 extern long long int wcstoll_l (__const wchar_t *__restrict __nptr,
 499                                 wchar_t **__restrict __endptr,
 500                                 int __base, __locale_t __loc) __THROW;
 501
 502 __extension__
 503 extern unsigned long long int wcstoull_l (__const wchar_t *__restrict __nptr,
 504                                           wchar_t **__restrict __endptr,
 505                                           int __base, __locale_t __loc)
 506      __THROW;
 507
 508 #ifdef __UCLIBC_HAS_FLOATS__
 509 extern double wcstod_l (__const wchar_t *__restrict __nptr,
 510                         wchar_t **__restrict __endptr, __locale_t __loc)
 511      __THROW;
 512
 513 extern float wcstof_l (__const wchar_t *__restrict __nptr,
 514                        wchar_t **__restrict __endptr, __locale_t __loc)
 515      __THROW;
 516
 517 extern long double wcstold_l (__const wchar_t *__restrict __nptr,
 518                               wchar_t **__restrict __endptr,
 519                               __locale_t __loc) __THROW;
 520 #endif /* __UCLIBC_HAS_FLOATS__ */
 521 #endif /* __UCLIBC_HAS_XLOCALE__ */
 522 #endif /* GNU */
 523
 524
 525 #ifdef  __USE_GNU
 526 /* Copy SRC to DEST, returning the address of the terminating L'\0' in
 527    DEST.  */
 528 extern wchar_t *wcpcpy (wchar_t *__dest, __const wchar_t *__src) __THROW;
 529
 530 /* Copy no more than N characters of SRC to DEST, returning the address of
 531    the last character written into DEST.  */
 532 extern wchar_t *wcpncpy (wchar_t *__dest, __const wchar_t *__src, size_t __n)
 533      __THROW;
 534 #endif  /* use GNU */
 535
 536
 537 /* Wide character I/O functions.  */
 538 #if defined __USE_ISOC99 || defined __USE_UNIX98
 539 __BEGIN_NAMESPACE_C99
 540
 541 /* Select orientation for stream.  */
 542 extern int fwide (__FILE *__fp, int __mode) __THROW;
 543
 544
 545 /* Write formatted output to STREAM.
 546
 547    This function is a possible cancellation point and therefore not
 548    marked with __THROW.  */
 549 extern int fwprintf (__FILE *__restrict __stream,
 550                      __const wchar_t *__restrict __format, ...)
 551      /* __attribute__ ((__format__ (__wprintf__, 2, 3))) */;
 552 libc_hidden_proto(fwprintf)
 553 /* Write formatted output to stdout.
 554
 555    This function is a possible cancellation point and therefore not
 556    marked with __THROW.  */
 557 extern int wprintf (__const wchar_t *__restrict __format, ...)
 558      /* __attribute__ ((__format__ (__wprintf__, 1, 2))) */;
 559 /* Write formatted output of at most N characters to S.  */
 560 extern int swprintf (wchar_t *__restrict __s, size_t __n,
 561                      __const wchar_t *__restrict __format, ...)
 562      __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 4))) */;
 563
 564 /* Write formatted output to S from argument list ARG.
 565
 566    This function is a possible cancellation point and therefore not
 567    marked with __THROW.  */
 568 extern int vfwprintf (__FILE *__restrict __s,
 569                       __const wchar_t *__restrict __format,
 570                       __gnuc_va_list __arg)
 571      /* __attribute__ ((__format__ (__wprintf__, 2, 0))) */;
 572 libc_hidden_proto(vfwprintf)
 573 /* Write formatted output to stdout from argument list ARG.
 574
 575    This function is a possible cancellation point and therefore not
 576    marked with __THROW.  */
 577 extern int vwprintf (__const wchar_t *__restrict __format,
 578                      __gnuc_va_list __arg)
 579      /* __attribute__ ((__format__ (__wprintf__, 1, 0))) */;
 580 /* Write formatted output of at most N character to S from argument
 581    list ARG.  */
 582 extern int vswprintf (wchar_t *__restrict __s, size_t __n,
 583                       __const wchar_t *__restrict __format,
 584                       __gnuc_va_list __arg)
 585      __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */;
 586 libc_hidden_proto(vswprintf)
 587
 588
 589 /* Read formatted input from STREAM.
 590
 591    This function is a possible cancellation point and therefore not
 592    marked with __THROW.  */
 593 extern int fwscanf (__FILE *__restrict __stream,
 594                     __const wchar_t *__restrict __format, ...)
 595      /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
 596 /* Read formatted input from stdin.
 597
 598    This function is a possible cancellation point and therefore not
 599    marked with __THROW.  */
 600 extern int wscanf (__const wchar_t *__restrict __format, ...)
 601      /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;
 602 /* Read formatted input from S.  */
 603 extern int swscanf (__const wchar_t *__restrict __s,
 604                     __const wchar_t *__restrict __format, ...)
 605      __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
 606
 607 __END_NAMESPACE_C99
 608 #endif /* Use ISO C99 and Unix98. */
 609
 610 #ifdef __USE_ISOC99
 611 __BEGIN_NAMESPACE_C99
 612
 613 /* Read formatted input from S into argument list ARG.
 614
 615    This function is a possible cancellation point and therefore not
 616    marked with __THROW.  */
 617 extern int vfwscanf (__FILE *__restrict __s,
 618                      __const wchar_t *__restrict __format,
 619                      __gnuc_va_list __arg)
 620      /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
 621 libc_hidden_proto(vfwscanf)
 622 /* Read formatted input from stdin into argument list ARG.
 623
 624    This function is a possible cancellation point and therefore not
 625    marked with __THROW.  */
 626 extern int vwscanf (__const wchar_t *__restrict __format,
 627                     __gnuc_va_list __arg)
 628      /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */;
 629 /* Read formatted input from S into argument list ARG.  */
 630 extern int vswscanf (__const wchar_t *__restrict __s,
 631                      __const wchar_t *__restrict __format,
 632                      __gnuc_va_list __arg)
 633      __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
 634 libc_hidden_proto(vswscanf)
 635
 636 __END_NAMESPACE_C99
 637 #endif /* Use ISO C99. */
 638
 639
 640 __BEGIN_NAMESPACE_C99
 641 /* Read a character from STREAM.
 642
 643    These functions are possible cancellation points and therefore not
 644    marked with __THROW.  */
 645 extern wint_t fgetwc (__FILE *__stream);
 646 libc_hidden_proto(fgetwc)
 647 extern wint_t getwc (__FILE *__stream);
 648
 649 /* Read a character from stdin.
 650
 651    This function is a possible cancellation point and therefore not
 652    marked with __THROW.  */
 653 extern wint_t getwchar (void);
 654
 655
 656 /* Write a character to STREAM.
 657
 658    These functions are possible cancellation points and therefore not
 659    marked with __THROW.  */
 660 extern wint_t fputwc (wchar_t __wc, __FILE *__stream);
 661 extern wint_t putwc (wchar_t __wc, __FILE *__stream);
 662
 663 /* Write a character to stdout.
 664
 665    This function is a possible cancellation points and therefore not
 666    marked with __THROW.  */
 667 extern wint_t putwchar (wchar_t __wc);
 668
 669
 670 /* Get a newline-terminated wide character string of finite length
 671    from STREAM.
 672
 673    This function is a possible cancellation points and therefore not
 674    marked with __THROW.  */
 675 extern wchar_t *fgetws (wchar_t *__restrict __ws, int __n,
 676                         __FILE *__restrict __stream);
 677
 678 /* Write a string to STREAM.
 679
 680    This function is a possible cancellation points and therefore not
 681    marked with __THROW.  */
 682 extern int fputws (__const wchar_t *__restrict __ws,
 683                    __FILE *__restrict __stream);
 684 libc_hidden_proto(fputws)
 685
 686
 687 /* Push a character back onto the input buffer of STREAM.
 688
 689    This function is a possible cancellation points and therefore not
 690    marked with __THROW.  */
 691 extern wint_t ungetwc (wint_t __wc, __FILE *__stream);
 692 libc_hidden_proto(ungetwc)
 693 __END_NAMESPACE_C99
 694
 695
 696 #ifdef __USE_GNU
 697 /* These are defined to be equivalent to the `char' functions defined
 698    in POSIX.1:1996.
 699
 700    These functions are not part of POSIX and therefore no official
 701    cancellation point.  But due to similarity with an POSIX interface
 702    or due to the implementation they are cancellation points and
 703    therefore not marked with __THROW.  */
 704 extern wint_t getwc_unlocked (__FILE *__stream);
 705 extern wint_t getwchar_unlocked (void);
 706
 707 /* This is the wide character version of a GNU extension.
 708
 709    This function is not part of POSIX and therefore no official
 710    cancellation point.  But due to similarity with an POSIX interface
 711    or due to the implementation it is a cancellation point and
 712    therefore not marked with __THROW.  */
 713 extern wint_t fgetwc_unlocked (__FILE *__stream);
 714 libc_hidden_proto(fgetwc_unlocked)
 715
 716 /* Faster version when locking is not necessary.
 717
 718    This function is not part of POSIX and therefore no official
 719    cancellation point.  But due to similarity with an POSIX interface
 720    or due to the implementation it is a cancellation point and
 721    therefore not marked with __THROW.  */
 722 extern wint_t fputwc_unlocked (wchar_t __wc, __FILE *__stream);
 723 libc_hidden_proto(fputwc_unlocked)
 724
 725 /* These are defined to be equivalent to the `char' functions defined
 726    in POSIX.1:1996.
 727
 728    These functions are not part of POSIX and therefore no official
 729    cancellation point.  But due to similarity with an POSIX interface
 730    or due to the implementation they are cancellation points and
 731    therefore not marked with __THROW.  */
 732 extern wint_t putwc_unlocked (wchar_t __wc, __FILE *__stream);
 733 extern wint_t putwchar_unlocked (wchar_t __wc);
 734
 735
 736 /* This function does the same as `fgetws' but does not lock the stream.
 737
 738    This function is not part of POSIX and therefore no official
 739    cancellation point.  But due to similarity with an POSIX interface
 740    or due to the implementation it is a cancellation point and
 741    therefore not marked with __THROW.  */
 742 extern wchar_t *fgetws_unlocked (wchar_t *__restrict __ws, int __n,
 743                                  __FILE *__restrict __stream);
 744 libc_hidden_proto(fgetws_unlocked)
 745
 746 /* This function does the same as `fputws' but does not lock the stream.
 747
 748    This function is not part of POSIX and therefore no official
 749    cancellation point.  But due to similarity with an POSIX interface
 750    or due to the implementation it is a cancellation point and
 751    therefore not marked with __THROW.  */
 752 extern int fputws_unlocked (__const wchar_t *__restrict __ws,
 753                             __FILE *__restrict __stream);
 754 libc_hidden_proto(fputws_unlocked)
 755 #endif
 756
 757
 758 __BEGIN_NAMESPACE_C99
 759 /* Format TP into S according to FORMAT.
 760    Write no more than MAXSIZE wide characters and return the number
 761    of wide characters written, or 0 if it would exceed MAXSIZE.  */
 762 extern size_t wcsftime (wchar_t *__restrict __s, size_t __maxsize,
 763                         __const wchar_t *__restrict __format,
 764                         __const struct tm *__restrict __tp) __THROW;
 765 libc_hidden_proto(wcsftime)
 766 __END_NAMESPACE_C99
 767
 768 # if defined __USE_GNU && defined __UCLIBC_HAS_XLOCALE__
 769 # include <xlocale.h>
 770
 771 /* Similar to `wcsftime' but takes the information from
 772    the provided locale and not the global locale.  */
 773 extern size_t wcsftime_l (wchar_t *__restrict __s, size_t __maxsize,
 774                           __const wchar_t *__restrict __format,
 775                           __const struct tm *__restrict __tp,
 776                           __locale_t __loc) __THROW;
 777 libc_hidden_proto(wcsftime_l)
 778 # endif
 779
 780 /* The X/Open standard demands that most of the functions defined in
 781    the <wctype.h> header must also appear here.  This is probably
 782    because some X/Open members wrote their implementation before the
 783    ISO C standard was published and introduced the better solution.
 784    We have to provide these definitions for compliance reasons but we
 785    do this nonsense only if really necessary.  */
 786 #if defined __USE_UNIX98 && !defined __USE_GNU
 787 # define __need_iswxxx
 788 # include <wctype.h>
 789 #endif
 790
 791 __END_DECLS
 792
 793 #endif  /* _WCHAR_H defined */
 794
 795 #endif /* wchar.h  */