wcsmbs/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 #ifdef _WCHAR_H
  32 /* Get FILE definition.  */
  33 # define __need___FILE
  34 # ifdef __USE_UNIX98
  35 #  define __need_FILE
  36 # endif
  37 # include <stdio.h>
  38 /* Get va_list definition.  */
  39 # define __need___va_list
  40 # include <stdarg.h>
  41
  42 /* Get size_t, wchar_t, wint_t and NULL from <stddef.h>.  */
  43 # define __need_size_t
  44 # define __need_wchar_t
  45 # define __need_NULL
  46 #endif
  47 #define __need_wint_t
  48 #include <stddef.h>
  49
  50 #include <bits/wchar.h>
  51
  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.  */
  54 #ifndef _WINT_T
  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.  */
  59 # define _WINT_T
  60 typedef unsigned int wint_t;
  61 #else
  62 # ifdef __USE_GNU
  63 __USING_NAMESPACE_STD(wint_t)
  64 # endif
  65 #endif
  66
  67
  68 #ifndef __mbstate_t_defined
  69 # define __mbstate_t_defined    1
  70 /* Conversion state information.  */
  71 typedef struct
  72 {
  73   int __count;
  74   union
  75   {
  76     wint_t __wch;
  77     char __wchb[4];
  78   } __value;            /* Value so far.  */
  79 } __mbstate_t;
  80 #endif
  81 #undef __need_mbstate_t
  82
  83
  84 /* The rest of the file is only used if used if __need_mbstate_t is not
  85    defined.  */
  86 #ifdef _WCHAR_H
  87
  88 __BEGIN_NAMESPACE_C99
  89 /* Public type.  */
  90 typedef __mbstate_t mbstate_t;
  91 __END_NAMESPACE_C99
  92 #ifdef __USE_GNU
  93 __USING_NAMESPACE_C99(mbstate_t)
  94 #endif
  95
  96 #ifndef WCHAR_MIN
  97 /* These constants might also be defined in <inttypes.h>.  */
  98 # define WCHAR_MIN __WCHAR_MIN
  99 # define WCHAR_MAX __WCHAR_MAX
 100 #endif
 101
 102 #ifndef WEOF
 103 # define WEOF (0xffffffffu)
 104 #endif
 105
 106 /* For XPG4 compliance we have to define the stuff from <wctype.h> here
 107    as well.  */
 108 #if defined __USE_XOPEN && !defined __USE_UNIX98
 109 # include <wctype.h>
 110 #endif
 111
 112
 113 __BEGIN_DECLS
 114
 115 __BEGIN_NAMESPACE_STD
 116 /* This incomplete type is defined in <time.h> but needed here because
 117    of `wcsftime'.  */
 118 struct tm;
 119 /* XXX We have to clean this up at some point.  Since tm is in the std
 120    namespace but wcsftime is in __c99 the type wouldn't be found
 121    without inserting it in the global namespace.  */
 122 __USING_NAMESPACE_STD(tm)
 123 __END_NAMESPACE_STD
 124
 125
 126 __BEGIN_NAMESPACE_C99
 127 /* Copy SRC to DEST.  */
 128 extern wchar_t *wcscpy (wchar_t *__restrict __dest,
 129                         __const wchar_t *__restrict __src) __THROW;
 130 /* Copy no more than N wide-characters of SRC to DEST.  */
 131 extern wchar_t *wcsncpy (wchar_t *__restrict __dest,
 132                          __const wchar_t *__restrict __src, size_t __n)
 133      __THROW;
 134
 135 /* Append SRC onto DEST.  */
 136 extern wchar_t *wcscat (wchar_t *__restrict __dest,
 137                         __const wchar_t *__restrict __src) __THROW;
 138 /* Append no more than N wide-characters of SRC onto DEST.  */
 139 extern wchar_t *wcsncat (wchar_t *__restrict __dest,
 140                          __const wchar_t *__restrict __src, size_t __n)
 141      __THROW;
 142
 143 /* Compare S1 and S2.  */
 144 extern int wcscmp (__const wchar_t *__s1, __const wchar_t *__s2)
 145      __THROW __attribute_pure__;
 146 /* Compare N wide-characters of S1 and S2.  */
 147 extern int wcsncmp (__const wchar_t *__s1, __const wchar_t *__s2, size_t __n)
 148      __THROW __attribute_pure__;
 149 __END_NAMESPACE_C99
 150
 151 #ifdef __USE_GNU
 152 /* Compare S1 and S2, ignoring case.  */
 153 extern int wcscasecmp (__const wchar_t *__s1, __const wchar_t *__s2) __THROW;
 154
 155 /* Compare no more than N chars of S1 and S2, ignoring case.  */
 156 extern int wcsncasecmp (__const wchar_t *__s1, __const wchar_t *__s2,
 157                         size_t __n) __THROW;
 158
 159 /* Similar to the two functions above but take the information from
 160    the provided locale and not the global locale.  */
 161 # include <xlocale.h>
 162
 163 extern int wcscasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,
 164                          __locale_t __loc) __THROW;
 165
 166 extern int wcsncasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,
 167                           size_t __n, __locale_t __loc) __THROW;
 168 #endif
 169
 170 __BEGIN_NAMESPACE_C99
 171 /* Compare S1 and S2, both interpreted as appropriate to the
 172    LC_COLLATE category of the current locale.  */
 173 extern int wcscoll (__const wchar_t *__s1, __const wchar_t *__s2) __THROW;
 174 /* Transform S2 into array pointed to by S1 such that if wcscmp is
 175    applied to two transformed strings the result is the as applying
 176    `wcscoll' to the original strings.  */
 177 extern size_t wcsxfrm (wchar_t *__restrict __s1,
 178                        __const wchar_t *__restrict __s2, size_t __n) __THROW;
 179 __END_NAMESPACE_C99
 180
 181 #ifdef __USE_GNU
 182 /* Similar to the two functions above but take the information from
 183    the provided locale and not the global locale.  */
 184
 185 /* Compare S1 and S2, both interpreted as appropriate to the
 186    LC_COLLATE category of the given locale.  */
 187 extern int wcscoll_l (__const wchar_t *__s1, __const wchar_t *__s2,
 188                       __locale_t __loc) __THROW;
 189
 190 /* Transform S2 into array pointed to by S1 such that if wcscmp is
 191    applied to two transformed strings the result is the as applying
 192    `wcscoll' to the original strings.  */
 193 extern size_t wcsxfrm_l (wchar_t *__s1, __const wchar_t *__s2,
 194                          size_t __n, __locale_t __loc) __THROW;
 195
 196 /* Duplicate S, returning an identical malloc'd string.  */
 197 extern wchar_t *wcsdup (__const wchar_t *__s) __THROW __attribute_malloc__;
 198 #endif
 199
 200 __BEGIN_NAMESPACE_C99
 201 /* Find the first occurrence of WC in WCS.  */
 202 extern wchar_t *wcschr (__const wchar_t *__wcs, wchar_t __wc)
 203      __THROW __attribute_pure__;
 204 /* Find the last occurrence of WC in WCS.  */
 205 extern wchar_t *wcsrchr (__const wchar_t *__wcs, wchar_t __wc)
 206      __THROW __attribute_pure__;
 207 __END_NAMESPACE_C99
 208
 209 #ifdef __USE_GNU
 210 /* This function is similar to `wcschr'.  But it returns a pointer to
 211    the closing NUL wide character in case C is not found in S.  */
 212 extern wchar_t *wcschrnul (__const wchar_t *__s, wchar_t __wc)
 213      __THROW __attribute_pure__;
 214 #endif
 215
 216 __BEGIN_NAMESPACE_C99
 217 /* Return the length of the initial segmet of WCS which
 218    consists entirely of wide characters not in REJECT.  */
 219 extern size_t wcscspn (__const wchar_t *__wcs, __const wchar_t *__reject)
 220      __THROW __attribute_pure__;
 221 /* Return the length of the initial segmet of WCS which
 222    consists entirely of wide characters in  ACCEPT.  */
 223 extern size_t wcsspn (__const wchar_t *__wcs, __const wchar_t *__accept)
 224      __THROW __attribute_pure__;
 225 /* Find the first occurrence in WCS of any character in ACCEPT.  */
 226 extern wchar_t *wcspbrk (__const wchar_t *__wcs, __const wchar_t *__accept)
 227      __THROW __attribute_pure__;
 228 /* Find the first occurrence of NEEDLE in HAYSTACK.  */
 229 extern wchar_t *wcsstr (__const wchar_t *__haystack, __const wchar_t *__needle)
 230      __THROW __attribute_pure__;
 231
 232 /* Divide WCS into tokens separated by characters in DELIM.  */
 233 extern wchar_t *wcstok (wchar_t *__restrict __s,
 234                         __const wchar_t *__restrict __delim,
 235                         wchar_t **__restrict __ptr) __THROW;
 236
 237 /* Return the number of wide characters in S.  */
 238 extern size_t wcslen (__const wchar_t *__s) __THROW __attribute_pure__;
 239 __END_NAMESPACE_C99
 240
 241 #ifdef __USE_XOPEN
 242 /* Another name for `wcsstr' from XPG4.  */
 243 extern wchar_t *wcswcs (__const wchar_t *__haystack, __const wchar_t *__needle)
 244      __THROW __attribute_pure__;
 245 #endif
 246
 247 #ifdef __USE_GNU
 248 /* Return the number of wide characters in S, but at most MAXLEN.  */
 249 extern size_t wcsnlen (__const wchar_t *__s, size_t __maxlen)
 250      __THROW __attribute_pure__;
 251 #endif
 252
 253
 254 __BEGIN_NAMESPACE_C99
 255 /* Search N wide characters of S for C.  */
 256 extern wchar_t *wmemchr (__const wchar_t *__s, wchar_t __c, size_t __n)
 257      __THROW __attribute_pure__;
 258
 259 /* Compare N wide characters of S1 and S2.  */
 260 extern int wmemcmp (__const wchar_t *__restrict __s1,
 261                     __const wchar_t *__restrict __s2, size_t __n)
 262      __THROW __attribute_pure__;
 263
 264 /* Copy N wide characters of SRC to DEST.  */
 265 extern wchar_t *wmemcpy (wchar_t *__restrict __s1,
 266                          __const wchar_t *__restrict __s2, size_t __n) __THROW;
 267
 268 /* Copy N wide characters of SRC to DEST, guaranteeing
 269    correct behavior for overlapping strings.  */
 270 extern wchar_t *wmemmove (wchar_t *__s1, __const wchar_t *__s2, size_t __n)
 271      __THROW;
 272
 273 /* Set N wide characters of S to C.  */
 274 extern wchar_t *wmemset (wchar_t *__s, wchar_t __c, size_t __n) __THROW;
 275 __END_NAMESPACE_C99
 276
 277 #ifdef __USE_GNU
 278 /* Copy N wide characters of SRC to DEST and return pointer to following
 279    wide character.  */
 280 extern wchar_t *wmempcpy (wchar_t *__restrict __s1,
 281                           __const wchar_t *__restrict __s2, size_t __n)
 282      __THROW;
 283 #endif
 284
 285
 286 __BEGIN_NAMESPACE_C99
 287 /* Determine whether C constitutes a valid (one-byte) multibyte
 288    character.  */
 289 extern wint_t btowc (int __c) __THROW;
 290
 291 /* Determine whether C corresponds to a member of the extended
 292    character set whose multibyte representation is a single byte.  */
 293 extern int wctob (wint_t __c) __THROW;
 294
 295 /* Determine whether PS points to an object representing the initial
 296    state.  */
 297 extern int mbsinit (__const mbstate_t *__ps) __THROW __attribute_pure__;
 298
 299 /* Write wide character representation of multibyte character pointed
 300    to by S to PWC.  */
 301 extern size_t mbrtowc (wchar_t *__restrict __pwc,
 302                        __const char *__restrict __s, size_t __n,
 303                        mbstate_t *__p) __THROW;
 304
 305 /* Write multibyte representation of wide character WC to S.  */
 306 extern size_t wcrtomb (char *__restrict __s, wchar_t __wc,
 307                        mbstate_t *__restrict __ps) __THROW;
 308
 309 /* Return number of bytes in multibyte character pointed to by S.  */
 310 extern size_t __mbrlen (__const char *__restrict __s, size_t __n,
 311                         mbstate_t *__restrict __ps) __THROW;
 312 extern size_t mbrlen (__const char *__restrict __s, size_t __n,
 313                       mbstate_t *__restrict __ps) __THROW;
 314 __END_NAMESPACE_C99
 315
 316 #ifdef __USE_EXTERN_INLINES
 317 /* Define inline function as optimization.  */
 318 extern __inline size_t mbrlen (__const char *__restrict __s, size_t __n,
 319                                mbstate_t *__restrict __ps) __THROW
 320 { return (__ps != NULL
 321           ? mbrtowc (NULL, __s, __n, __ps) : __mbrlen (__s, __n, NULL)); }
 322 #endif
 323
 324 __BEGIN_NAMESPACE_C99
 325 /* Write wide character representation of multibyte character string
 326    SRC to DST.  */
 327 extern size_t mbsrtowcs (wchar_t *__restrict __dst,
 328                          __const char **__restrict __src, size_t __len,
 329                          mbstate_t *__restrict __ps) __THROW;
 330
 331 /* Write multibyte character representation of wide character string
 332    SRC to DST.  */
 333 extern size_t wcsrtombs (char *__restrict __dst,
 334                          __const wchar_t **__restrict __src, size_t __len,
 335                          mbstate_t *__restrict __ps) __THROW;
 336 __END_NAMESPACE_C99
 337
 338
 339 #ifdef  __USE_GNU
 340 /* Write wide character representation of at most NMC bytes of the
 341    multibyte character string SRC to DST.  */
 342 extern size_t mbsnrtowcs (wchar_t *__restrict __dst,
 343                           __const char **__restrict __src, size_t __nmc,
 344                           size_t __len, mbstate_t *__restrict __ps) __THROW;
 345
 346 /* Write multibyte character representation of at most NWC characters
 347    from the wide character string SRC to DST.  */
 348 extern size_t wcsnrtombs (char *__restrict __dst,
 349                           __const wchar_t **__restrict __src,
 350                           size_t __nwc, size_t __len,
 351                           mbstate_t *__restrict __ps) __THROW;
 352 #endif  /* use GNU */
 353
 354
 355 /* The following functions are extensions found in X/Open CAE.  */
 356 #ifdef __USE_XOPEN
 357 /* Determine number of column positions required for C.  */
 358 extern int wcwidth (wchar_t __c) __THROW;
 359
 360 /* Determine number of column positions required for first N wide
 361    characters (or fewer if S ends before this) in S.  */
 362 extern int wcswidth (__const wchar_t *__s, size_t __n) __THROW;
 363 #endif  /* Use X/Open.  */
 364
 365
 366 __BEGIN_NAMESPACE_C99
 367 /* Convert initial portion of the wide string NPTR to `double'
 368    representation.  */
 369 extern double wcstod (__const wchar_t *__restrict __nptr,
 370                       wchar_t **__restrict __endptr) __THROW;
 371
 372 #ifdef __USE_ISOC99
 373 /* Likewise for `float' and `long double' sizes of floating-point numbers.  */
 374 extern float wcstof (__const wchar_t *__restrict __nptr,
 375                      wchar_t **__restrict __endptr) __THROW;
 376 extern long double wcstold (__const wchar_t *__restrict __nptr,
 377                             wchar_t **__restrict __endptr) __THROW;
 378 #endif /* C99 */
 379
 380
 381 /* Convert initial portion of wide string NPTR to `long int'
 382    representation.  */
 383 extern long int wcstol (__const wchar_t *__restrict __nptr,
 384                         wchar_t **__restrict __endptr, int __base) __THROW;
 385
 386 /* Convert initial portion of wide string NPTR to `unsigned long int'
 387    representation.  */
 388 extern unsigned long int wcstoul (__const wchar_t *__restrict __nptr,
 389                                   wchar_t **__restrict __endptr, int __base)
 390      __THROW;
 391
 392 #if defined __USE_ISOC99 || (defined __GNUC__ && defined __USE_GNU)
 393 /* Convert initial portion of wide string NPTR to `long int'
 394    representation.  */
 395 __extension__
 396 extern long long int wcstoll (__const wchar_t *__restrict __nptr,
 397                               wchar_t **__restrict __endptr, int __base)
 398      __THROW;
 399
 400 /* Convert initial portion of wide string NPTR to `unsigned long long int'
 401    representation.  */
 402 __extension__
 403 extern unsigned long long int wcstoull (__const wchar_t *__restrict __nptr,
 404                                         wchar_t **__restrict __endptr,
 405                                         int __base) __THROW;
 406 #endif /* ISO C99 or GCC and GNU.  */
 407 __END_NAMESPACE_C99
 408
 409 #if defined __GNUC__ && defined __USE_GNU
 410 /* Convert initial portion of wide string NPTR to `long int'
 411    representation.  */
 412 __extension__
 413 extern long long int wcstoq (__const wchar_t *__restrict __nptr,
 414                              wchar_t **__restrict __endptr, int __base)
 415      __THROW;
 416
 417 /* Convert initial portion of wide string NPTR to `unsigned long long int'
 418    representation.  */
 419 __extension__
 420 extern unsigned long long int wcstouq (__const wchar_t *__restrict __nptr,
 421                                        wchar_t **__restrict __endptr,
 422                                        int __base) __THROW;
 423 #endif /* GCC and use GNU.  */
 424
 425 #ifdef __USE_GNU
 426 /* The concept of one static locale per category is not very well
 427    thought out.  Many applications will need to process its data using
 428    information from several different locales.  Another application is
 429    the implementation of the internationalization handling in the
 430    upcoming ISO C++ standard library.  To support this another set of
 431    the functions using locale data exist which have an additional
 432    argument.
 433
 434    Attention: all these functions are *not* standardized in any form.
 435    This is a proof-of-concept implementation.  */
 436
 437 /* Structure for reentrant locale using functions.  This is an
 438    (almost) opaque type for the user level programs.  */
 439 # include <xlocale.h>
 440
 441 /* Special versions of the functions above which take the locale to
 442    use as an additional parameter.  */
 443 extern long int wcstol_l (__const wchar_t *__restrict __nptr,
 444                           wchar_t **__restrict __endptr, int __base,
 445                           __locale_t __loc) __THROW;
 446
 447 extern unsigned long int wcstoul_l (__const wchar_t *__restrict __nptr,
 448                                     wchar_t **__restrict __endptr,
 449                                     int __base, __locale_t __loc) __THROW;
 450
 451 __extension__
 452 extern long long int wcstoll_l (__const wchar_t *__restrict __nptr,
 453                                 wchar_t **__restrict __endptr,
 454                                 int __base, __locale_t __loc) __THROW;
 455
 456 __extension__
 457 extern unsigned long long int wcstoull_l (__const wchar_t *__restrict __nptr,
 458                                           wchar_t **__restrict __endptr,
 459                                           int __base, __locale_t __loc)
 460      __THROW;
 461
 462 extern double wcstod_l (__const wchar_t *__restrict __nptr,
 463                         wchar_t **__restrict __endptr, __locale_t __loc)
 464      __THROW;
 465
 466 extern float wcstof_l (__const wchar_t *__restrict __nptr,
 467                        wchar_t **__restrict __endptr, __locale_t __loc)
 468      __THROW;
 469
 470 extern long double wcstold_l (__const wchar_t *__restrict __nptr,
 471                               wchar_t **__restrict __endptr,
 472                               __locale_t __loc) __THROW;
 473 #endif /* GNU */
 474
 475
 476 /* The internal entry points for `wcstoX' take an extra flag argument
 477    saying whether or not to parse locale-dependent number grouping.  */
 478 extern double __wcstod_internal (__const wchar_t *__restrict __nptr,
 479                                  wchar_t **__restrict __endptr, int __group)
 480      __THROW;
 481 extern float __wcstof_internal (__const wchar_t *__restrict __nptr,
 482                                 wchar_t **__restrict __endptr, int __group)
 483      __THROW;
 484 extern long double __wcstold_internal (__const wchar_t *__restrict __nptr,
 485                                        wchar_t **__restrict __endptr,
 486                                        int __group) __THROW;
 487
 488 #ifndef __wcstol_internal_defined
 489 extern long int __wcstol_internal (__const wchar_t *__restrict __nptr,
 490                                    wchar_t **__restrict __endptr,
 491                                    int __base, int __group) __THROW;
 492 # define __wcstol_internal_defined      1
 493 #endif
 494 #ifndef __wcstoul_internal_defined
 495 extern unsigned long int __wcstoul_internal (__const wchar_t *__restrict __npt,
 496                                              wchar_t **__restrict __endptr,
 497                                              int __base, int __group) __THROW;
 498 # define __wcstoul_internal_defined     1
 499 #endif
 500 #ifndef __wcstoll_internal_defined
 501 __extension__
 502 extern long long int __wcstoll_internal (__const wchar_t *__restrict __nptr,
 503                                          wchar_t **__restrict __endptr,
 504                                          int __base, int __group) __THROW;
 505 # define __wcstoll_internal_defined     1
 506 #endif
 507 #ifndef __wcstoull_internal_defined
 508 __extension__
 509 extern unsigned long long int __wcstoull_internal (__const wchar_t *
 510                                                    __restrict __nptr,
 511                                                    wchar_t **
 512                                                    __restrict __endptr,
 513                                                    int __base,
 514                                                    int __group) __THROW;
 515 # define __wcstoull_internal_defined    1
 516 #endif
 517
 518
 519 #if defined __OPTIMIZE__ && __GNUC__ >= 2
 520 /* Define inline functions which call the internal entry points.  */
 521 __BEGIN_NAMESPACE_C99
 522
 523 extern __inline double wcstod (__const wchar_t *__restrict __nptr,
 524                                wchar_t **__restrict __endptr) __THROW
 525 { return __wcstod_internal (__nptr, __endptr, 0); }
 526 extern __inline long int wcstol (__const wchar_t *__restrict __nptr,
 527                                  wchar_t **__restrict __endptr,
 528                                  int __base) __THROW
 529 { return __wcstol_internal (__nptr, __endptr, __base, 0); }
 530 extern __inline unsigned long int wcstoul (__const wchar_t *__restrict __nptr,
 531                                            wchar_t **__restrict __endptr,
 532                                            int __base) __THROW
 533 { return __wcstoul_internal (__nptr, __endptr, __base, 0); }
 534 __END_NAMESPACE_C99
 535
 536 # ifdef __USE_GNU
 537 extern __inline float wcstof (__const wchar_t *__restrict __nptr,
 538                               wchar_t **__restrict __endptr) __THROW
 539 { return __wcstof_internal (__nptr, __endptr, 0); }
 540 extern __inline long double wcstold (__const wchar_t *__restrict __nptr,
 541                                      wchar_t **__restrict __endptr) __THROW
 542 { return __wcstold_internal (__nptr, __endptr, 0); }
 543
 544
 545 __extension__
 546 extern __inline long long int wcstoq (__const wchar_t *__restrict __nptr,
 547                                       wchar_t **__restrict __endptr,
 548                                       int __base) __THROW
 549 { return __wcstoll_internal (__nptr, __endptr, __base, 0); }
 550 __extension__
 551 extern __inline unsigned long long int wcstouq (__const wchar_t *
 552                                                 __restrict __nptr,
 553                                                 wchar_t **__restrict __endptr,
 554                                                 int __base) __THROW
 555 { return __wcstoull_internal (__nptr, __endptr, __base, 0); }
 556 # endif /* Use GNU.  */
 557 #endif /* Optimizing GCC >=2.  */
 558
 559
 560 #ifdef  __USE_GNU
 561 /* Copy SRC to DEST, returning the address of the terminating L'\0' in
 562    DEST.  */
 563 extern wchar_t *wcpcpy (wchar_t *__dest, __const wchar_t *__src) __THROW;
 564
 565 /* Copy no more than N characters of SRC to DEST, returning the address of
 566    the last character written into DEST.  */
 567 extern wchar_t *wcpncpy (wchar_t *__dest, __const wchar_t *__src, size_t __n)
 568      __THROW;
 569 #endif  /* use GNU */
 570
 571
 572 /* Wide character I/O functions.  */
 573 #if defined __USE_ISOC99 || defined __USE_UNIX98
 574 __BEGIN_NAMESPACE_C99
 575
 576 /* Select orientation for stream.  */
 577 extern int fwide (__FILE *__fp, int __mode) __THROW;
 578
 579
 580 /* Write formatted output to STREAM.
 581
 582    This function is a possible cancellation point and therefore not
 583    marked with __THROW.  */
 584 extern int fwprintf (__FILE *__restrict __stream,
 585                      __const wchar_t *__restrict __format, ...)
 586      /* __attribute__ ((__format__ (__wprintf__, 2, 3))) */;
 587 /* Write formatted output to stdout.
 588
 589    This function is a possible cancellation point and therefore not
 590    marked with __THROW.  */
 591 extern int wprintf (__const wchar_t *__restrict __format, ...)
 592      /* __attribute__ ((__format__ (__wprintf__, 1, 2))) */;
 593 /* Write formatted output of at most N characters to S.  */
 594 extern int swprintf (wchar_t *__restrict __s, size_t __n,
 595                      __const wchar_t *__restrict __format, ...)
 596      __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 4))) */;
 597
 598 /* Write formatted output to S from argument list ARG.
 599
 600    This function is a possible cancellation point and therefore not
 601    marked with __THROW.  */
 602 extern int vfwprintf (__FILE *__restrict __s,
 603                       __const wchar_t *__restrict __format,
 604                       __gnuc_va_list __arg)
 605      /* __attribute__ ((__format__ (__wprintf__, 2, 0))) */;
 606 /* Write formatted output to stdout from argument list ARG.
 607
 608    This function is a possible cancellation point and therefore not
 609    marked with __THROW.  */
 610 extern int vwprintf (__const wchar_t *__restrict __format,
 611                      __gnuc_va_list __arg)
 612      /* __attribute__ ((__format__ (__wprintf__, 1, 0))) */;
 613 /* Write formatted output of at most N character to S from argument
 614    list ARG.  */
 615 extern int vswprintf (wchar_t *__restrict __s, size_t __n,
 616                       __const wchar_t *__restrict __format,
 617                       __gnuc_va_list __arg)
 618      __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */;
 619
 620
 621 /* Read formatted input from STREAM.
 622
 623    This function is a possible cancellation point and therefore not
 624    marked with __THROW.  */
 625 extern int fwscanf (__FILE *__restrict __stream,
 626                     __const wchar_t *__restrict __format, ...)
 627      /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
 628 /* Read formatted input from stdin.
 629
 630    This function is a possible cancellation point and therefore not
 631    marked with __THROW.  */
 632 extern int wscanf (__const wchar_t *__restrict __format, ...)
 633      /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;
 634 /* Read formatted input from S.  */
 635 extern int swscanf (__const wchar_t *__restrict __s,
 636                     __const wchar_t *__restrict __format, ...)
 637      __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
 638
 639 __END_NAMESPACE_C99
 640 #endif /* Use ISO C99 and Unix98. */
 641
 642 #ifdef __USE_ISOC99
 643 __BEGIN_NAMESPACE_C99
 644
 645 /* Read formatted input from S into argument list ARG.
 646
 647    This function is a possible cancellation point and therefore not
 648    marked with __THROW.  */
 649 extern int vfwscanf (__FILE *__restrict __s,
 650                      __const wchar_t *__restrict __format,
 651                      __gnuc_va_list __arg)
 652      /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
 653 /* Read formatted input from stdin into argument list ARG.
 654
 655    This function is a possible cancellation point and therefore not
 656    marked with __THROW.  */
 657 extern int vwscanf (__const wchar_t *__restrict __format,
 658                     __gnuc_va_list __arg)
 659      /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */;
 660 /* Read formatted input from S into argument list ARG.  */
 661 extern int vswscanf (__const wchar_t *__restrict __s,
 662                      __const wchar_t *__restrict __format,
 663                      __gnuc_va_list __arg)
 664      __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
 665
 666 __END_NAMESPACE_C99
 667 #endif /* Use ISO C99. */
 668
 669
 670 __BEGIN_NAMESPACE_C99
 671 /* Read a character from STREAM.
 672
 673    These functions are possible cancellation points and therefore not
 674    marked with __THROW.  */
 675 extern wint_t fgetwc (__FILE *__stream);
 676 extern wint_t getwc (__FILE *__stream);
 677
 678 /* Read a character from stdin.
 679
 680    This function is a possible cancellation point and therefore not
 681    marked with __THROW.  */
 682 extern wint_t getwchar (void);
 683
 684
 685 /* Write a character to STREAM.
 686
 687    These functions are possible cancellation points and therefore not
 688    marked with __THROW.  */
 689 extern wint_t fputwc (wchar_t __wc, __FILE *__stream);
 690 extern wint_t putwc (wchar_t __wc, __FILE *__stream);
 691
 692 /* Write a character to stdout.
 693
 694    This function is a possible cancellation points and therefore not
 695    marked with __THROW.  */
 696 extern wint_t putwchar (wchar_t __wc);
 697
 698
 699 /* Get a newline-terminated wide character string of finite length
 700    from STREAM.
 701
 702    This function is a possible cancellation points and therefore not
 703    marked with __THROW.  */
 704 extern wchar_t *fgetws (wchar_t *__restrict __ws, int __n,
 705                         __FILE *__restrict __stream);
 706
 707 /* Write a string to STREAM.
 708
 709    This function is a possible cancellation points and therefore not
 710    marked with __THROW.  */
 711 extern int fputws (__const wchar_t *__restrict __ws,
 712                    __FILE *__restrict __stream);
 713
 714
 715 /* Push a character back onto the input buffer of STREAM.
 716
 717    This function is a possible cancellation points and therefore not
 718    marked with __THROW.  */
 719 extern wint_t ungetwc (wint_t __wc, __FILE *__stream);
 720 __END_NAMESPACE_C99
 721
 722
 723 #ifdef __USE_GNU
 724 /* These are defined to be equivalent to the `char' functions defined
 725    in POSIX.1:1996.
 726
 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 getwc_unlocked (__FILE *__stream);
 732 extern wint_t getwchar_unlocked (void);
 733
 734 /* This is the wide character version of a GNU extension.
 735
 736    This function is not part of POSIX and therefore no official
 737    cancellation point.  But due to similarity with an POSIX interface
 738    or due to the implementation it is a cancellation point and
 739    therefore not marked with __THROW.  */
 740 extern wint_t fgetwc_unlocked (__FILE *__stream);
 741
 742 /* Faster version when locking is not necessary.
 743
 744    This function is not part of POSIX and therefore no official
 745    cancellation point.  But due to similarity with an POSIX interface
 746    or due to the implementation it is a cancellation point and
 747    therefore not marked with __THROW.  */
 748 extern wint_t fputwc_unlocked (wchar_t __wc, __FILE *__stream);
 749
 750 /* These are defined to be equivalent to the `char' functions defined
 751    in POSIX.1:1996.
 752
 753    These functions are not part of POSIX and therefore no official
 754    cancellation point.  But due to similarity with an POSIX interface
 755    or due to the implementation they are cancellation points and
 756    therefore not marked with __THROW.  */
 757 extern wint_t putwc_unlocked (wchar_t __wc, __FILE *__stream);
 758 extern wint_t putwchar_unlocked (wchar_t __wc);
 759
 760
 761 /* This function does the same as `fgetws' but does not lock the stream.
 762
 763    This function is not part of POSIX and therefore no official
 764    cancellation point.  But due to similarity with an POSIX interface
 765    or due to the implementation it is a cancellation point and
 766    therefore not marked with __THROW.  */
 767 extern wchar_t *fgetws_unlocked (wchar_t *__restrict __ws, int __n,
 768                                  __FILE *__restrict __stream);
 769
 770 /* This function does the same as `fputws' but does not lock the stream.
 771
 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 int fputws_unlocked (__const wchar_t *__restrict __ws,
 777                             __FILE *__restrict __stream);
 778 #endif
 779
 780
 781 __BEGIN_NAMESPACE_C99
 782 /* Format TP into S according to FORMAT.
 783    Write no more than MAXSIZE wide characters and return the number
 784    of wide characters written, or 0 if it would exceed MAXSIZE.  */
 785 extern size_t wcsftime (wchar_t *__restrict __s, size_t __maxsize,
 786                         __const wchar_t *__restrict __format,
 787                         __const struct tm *__restrict __tp) __THROW;
 788 __END_NAMESPACE_C99
 789
 790 # ifdef __USE_GNU
 791 # include <xlocale.h>
 792
 793 /* Similar to `wcsftime' but takes the information from
 794    the provided locale and not the global locale.  */
 795 extern size_t wcsftime_l (wchar_t *__restrict __s, size_t __maxsize,
 796                           __const wchar_t *__restrict __format,
 797                           __const struct tm *__restrict __tp,
 798                           __locale_t __loc) __THROW;
 799 # endif
 800
 801 /* The X/Open standard demands that most of the functions defined in
 802    the <wctype.h> header must also appear here.  This is probably
 803    because some X/Open members wrote their implementation before the
 804    ISO C standard was published and introduced the better solution.
 805    We have to provide these definitions for compliance reasons but we
 806    do this nonsense only if really necessary.  */
 807 #if defined __USE_UNIX98 && !defined __USE_GNU
 808 # define __need_iswxxx
 809 # include <wctype.h>
 810 #endif
 811
 812 __END_DECLS
 813
 814 #endif  /* _WCHAR_H defined */
 815
 816 #endif /* wchar.h  */