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 /* 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__
  66 __BEGIN_NAMESPACE_STD
  67 typedef __WINT_TYPE__ wint_t;
  68 __END_NAMESPACE_STD
  69 # endif
  70 #endif
  71
  72
  73 #ifndef __mbstate_t_defined
  74 # define __mbstate_t_defined    1
  75 /* Conversion state information.  */
  76 typedef struct
  77 {
  78   int __count;
  79   union
  80   {
  81     wint_t __wch;
  82     char __wchb[4];
  83   } __value;            /* Value so far.  */
  84 } __mbstate_t;
  85 #endif
  86 #undef __need_mbstate_t
  87
  88
  89 /* The rest of the file is only used if used if __need_mbstate_t is not
  90    defined.  */
  91 #ifdef _WCHAR_H
  92
  93 __BEGIN_NAMESPACE_C99
  94 /* Public type.  */
  95 typedef __mbstate_t mbstate_t;
  96 __END_NAMESPACE_C99
  97 #ifdef __USE_GNU
  98 __USING_NAMESPACE_C99(mbstate_t)
  99 #endif
 100
 101 #ifndef WCHAR_MIN
 102 /* These constants might also be defined in <inttypes.h>.  */
 103 # define WCHAR_MIN __WCHAR_MIN
 104 # define WCHAR_MAX __WCHAR_MAX
 105 #endif
 106
 107 #ifndef WEOF
 108 # define WEOF (0xffffffffu)
 109 #endif
 110
 111 /* For XPG4 compliance we have to define the stuff from <wctype.h> here
 112    as well.  */
 113 #if defined __USE_XOPEN && !defined __USE_UNIX98
 114 # include <wctype.h>
 115 #endif
 116
 117
 118 __BEGIN_DECLS
 119
 120 __BEGIN_NAMESPACE_STD
 121 /* This incomplete type is defined in <time.h> but needed here because
 122    of `wcsftime'.  */
 123 struct tm;
 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)
 128 __END_NAMESPACE_STD
 129
 130
 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)
 138      __THROW;
 139
 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)
 146      __THROW;
 147
 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__;
 154 __END_NAMESPACE_C99
 155
 156 #ifdef __USE_GNU
 157 /* Compare S1 and S2, ignoring case.  */
 158 extern int wcscasecmp (__const wchar_t *__s1, __const wchar_t *__s2) __THROW;
 159
 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,
 162                         size_t __n) __THROW;
 163
 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>
 167
 168 extern int wcscasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,
 169                          __locale_t __loc) __THROW;
 170
 171 extern int wcsncasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,
 172                           size_t __n, __locale_t __loc) __THROW;
 173 #endif
 174
 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;
 184 __END_NAMESPACE_C99
 185
 186 #ifdef __USE_GNU
 187 /* Similar to the two functions above but take the information from
 188    the provided locale and not the global locale.  */
 189
 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;
 194
 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;
 200
 201 /* Duplicate S, returning an identical malloc'd string.  */
 202 extern wchar_t *wcsdup (__const wchar_t *__s) __THROW __attribute_malloc__;
 203 #endif
 204
 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__;
 212 __END_NAMESPACE_C99
 213
 214 #ifdef __USE_GNU
 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__;
 219 #endif
 220
 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__;
 236
 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;
 241
 242 /* Return the number of wide characters in S.  */
 243 extern size_t wcslen (__const wchar_t *__s) __THROW __attribute_pure__;
 244 __END_NAMESPACE_C99
 245
 246 #ifdef __USE_XOPEN
 247 /* Another name for `wcsstr' from XPG4.  */
 248 extern wchar_t *wcswcs (__const wchar_t *__haystack, __const wchar_t *__needle)
 249      __THROW __attribute_pure__;
 250 #endif
 251
 252 #ifdef __USE_GNU
 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__;
 256 #endif
 257
 258
 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__;
 263
 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__;
 268
 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;
 272
 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)
 276      __THROW;
 277
 278 /* Set N wide characters of S to C.  */
 279 extern wchar_t *wmemset (wchar_t *__s, wchar_t __c, size_t __n) __THROW;
 280 __END_NAMESPACE_C99
 281
 282 #ifdef __USE_GNU
 283 /* Copy N wide characters of SRC to DEST and return pointer to following
 284    wide character.  */
 285 extern wchar_t *wmempcpy (wchar_t *__restrict __s1,
 286                           __const wchar_t *__restrict __s2, size_t __n)
 287      __THROW;
 288 #endif
 289
 290
 291 __BEGIN_NAMESPACE_C99
 292 /* Determine whether C constitutes a valid (one-byte) multibyte
 293    character.  */
 294 extern wint_t btowc (int __c) __THROW;
 295
 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;
 299
 300 /* Determine whether PS points to an object representing the initial
 301    state.  */
 302 extern int mbsinit (__const mbstate_t *__ps) __THROW __attribute_pure__;
 303
 304 /* Write wide character representation of multibyte character pointed
 305    to by S to PWC.  */
 306 extern size_t mbrtowc (wchar_t *__restrict __pwc,
 307                        __const char *__restrict __s, size_t __n,
 308                        mbstate_t *__p) __THROW;
 309
 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;
 313
 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;
 319 __END_NAMESPACE_C99
 320
 321 #ifdef __USE_EXTERN_INLINES
 322 /* Define inline function as optimization.  */
 323 extern __inline size_t mbrlen (__const char *__restrict __s, size_t __n,
 324                                mbstate_t *__restrict __ps) __THROW
 325 { return (__ps != NULL
 326           ? mbrtowc (NULL, __s, __n, __ps) : __mbrlen (__s, __n, NULL)); }
 327 #endif
 328
 329 __BEGIN_NAMESPACE_C99
 330 /* Write wide character representation of multibyte character string
 331    SRC to DST.  */
 332 extern size_t mbsrtowcs (wchar_t *__restrict __dst,
 333                          __const char **__restrict __src, size_t __len,
 334                          mbstate_t *__restrict __ps) __THROW;
 335
 336 /* Write multibyte character representation of wide character string
 337    SRC to DST.  */
 338 extern size_t wcsrtombs (char *__restrict __dst,
 339                          __const wchar_t **__restrict __src, size_t __len,
 340                          mbstate_t *__restrict __ps) __THROW;
 341 __END_NAMESPACE_C99
 342
 343
 344 #ifdef  __USE_GNU
 345 /* Write wide character representation of at most NMC bytes of the
 346    multibyte character string SRC to DST.  */
 347 extern size_t mbsnrtowcs (wchar_t *__restrict __dst,
 348                           __const char **__restrict __src, size_t __nmc,
 349                           size_t __len, mbstate_t *__restrict __ps) __THROW;
 350
 351 /* Write multibyte character representation of at most NWC characters
 352    from the wide character string SRC to DST.  */
 353 extern size_t wcsnrtombs (char *__restrict __dst,
 354                           __const wchar_t **__restrict __src,
 355                           size_t __nwc, size_t __len,
 356                           mbstate_t *__restrict __ps) __THROW;
 357 #endif  /* use GNU */
 358
 359
 360 /* The following functions are extensions found in X/Open CAE.  */
 361 #ifdef __USE_XOPEN
 362 /* Determine number of column positions required for C.  */
 363 extern int wcwidth (wchar_t __c) __THROW;
 364
 365 /* Determine number of column positions required for first N wide
 366    characters (or fewer if S ends before this) in S.  */
 367 extern int wcswidth (__const wchar_t *__s, size_t __n) __THROW;
 368 #endif  /* Use X/Open.  */
 369
 370
 371 __BEGIN_NAMESPACE_C99
 372 /* Convert initial portion of the wide string NPTR to `double'
 373    representation.  */
 374 extern double wcstod (__const wchar_t *__restrict __nptr,
 375                       wchar_t **__restrict __endptr) __THROW;
 376
 377 #ifdef __USE_ISOC99
 378 /* Likewise for `float' and `long double' sizes of floating-point numbers.  */
 379 extern float wcstof (__const wchar_t *__restrict __nptr,
 380                      wchar_t **__restrict __endptr) __THROW;
 381 extern long double wcstold (__const wchar_t *__restrict __nptr,
 382                             wchar_t **__restrict __endptr) __THROW;
 383 #endif /* C99 */
 384
 385
 386 /* Convert initial portion of wide string NPTR to `long int'
 387    representation.  */
 388 extern long int wcstol (__const wchar_t *__restrict __nptr,
 389                         wchar_t **__restrict __endptr, int __base) __THROW;
 390
 391 /* Convert initial portion of wide string NPTR to `unsigned long int'
 392    representation.  */
 393 extern unsigned long int wcstoul (__const wchar_t *__restrict __nptr,
 394                                   wchar_t **__restrict __endptr, int __base)
 395      __THROW;
 396
 397 #if defined __USE_ISOC99 || (defined __GNUC__ && defined __USE_GNU)
 398 /* Convert initial portion of wide string NPTR to `long int'
 399    representation.  */
 400 __extension__
 401 extern long long int wcstoll (__const wchar_t *__restrict __nptr,
 402                               wchar_t **__restrict __endptr, int __base)
 403      __THROW;
 404
 405 /* Convert initial portion of wide string NPTR to `unsigned long long int'
 406    representation.  */
 407 __extension__
 408 extern unsigned long long int wcstoull (__const wchar_t *__restrict __nptr,
 409                                         wchar_t **__restrict __endptr,
 410                                         int __base) __THROW;
 411 #endif /* ISO C99 or GCC and GNU.  */
 412 __END_NAMESPACE_C99
 413
 414 #if defined __GNUC__ && defined __USE_GNU
 415 /* Convert initial portion of wide string NPTR to `long int'
 416    representation.  */
 417 __extension__
 418 extern long long int wcstoq (__const wchar_t *__restrict __nptr,
 419                              wchar_t **__restrict __endptr, int __base)
 420      __THROW;
 421
 422 /* Convert initial portion of wide string NPTR to `unsigned long long int'
 423    representation.  */
 424 __extension__
 425 extern unsigned long long int wcstouq (__const wchar_t *__restrict __nptr,
 426                                        wchar_t **__restrict __endptr,
 427                                        int __base) __THROW;
 428 #endif /* GCC and use GNU.  */
 429
 430 #ifdef __USE_GNU
 431 /* The concept of one static locale per category is not very well
 432    thought out.  Many applications will need to process its data using
 433    information from several different locales.  Another application is
 434    the implementation of the internationalization handling in the
 435    upcoming ISO C++ standard library.  To support this another set of
 436    the functions using locale data exist which have an additional
 437    argument.
 438
 439    Attention: all these functions are *not* standardized in any form.
 440    This is a proof-of-concept implementation.  */
 441
 442 /* Structure for reentrant locale using functions.  This is an
 443    (almost) opaque type for the user level programs.  */
 444 # include <xlocale.h>
 445
 446 /* Special versions of the functions above which take the locale to
 447    use as an additional parameter.  */
 448 extern long int wcstol_l (__const wchar_t *__restrict __nptr,
 449                           wchar_t **__restrict __endptr, int __base,
 450                           __locale_t __loc) __THROW;
 451
 452 extern unsigned long int wcstoul_l (__const wchar_t *__restrict __nptr,
 453                                     wchar_t **__restrict __endptr,
 454                                     int __base, __locale_t __loc) __THROW;
 455
 456 __extension__
 457 extern long long int wcstoll_l (__const wchar_t *__restrict __nptr,
 458                                 wchar_t **__restrict __endptr,
 459                                 int __base, __locale_t __loc) __THROW;
 460
 461 __extension__
 462 extern unsigned long long int wcstoull_l (__const wchar_t *__restrict __nptr,
 463                                           wchar_t **__restrict __endptr,
 464                                           int __base, __locale_t __loc)
 465      __THROW;
 466
 467 extern double wcstod_l (__const wchar_t *__restrict __nptr,
 468                         wchar_t **__restrict __endptr, __locale_t __loc)
 469      __THROW;
 470
 471 extern float wcstof_l (__const wchar_t *__restrict __nptr,
 472                        wchar_t **__restrict __endptr, __locale_t __loc)
 473      __THROW;
 474
 475 extern long double wcstold_l (__const wchar_t *__restrict __nptr,
 476                               wchar_t **__restrict __endptr,
 477                               __locale_t __loc) __THROW;
 478 #endif /* GNU */
 479
 480
 481 /* The internal entry points for `wcstoX' take an extra flag argument
 482    saying whether or not to parse locale-dependent number grouping.  */
 483 extern double __wcstod_internal (__const wchar_t *__restrict __nptr,
 484                                  wchar_t **__restrict __endptr, int __group)
 485      __THROW;
 486 extern float __wcstof_internal (__const wchar_t *__restrict __nptr,
 487                                 wchar_t **__restrict __endptr, int __group)
 488      __THROW;
 489 extern long double __wcstold_internal (__const wchar_t *__restrict __nptr,
 490                                        wchar_t **__restrict __endptr,
 491                                        int __group) __THROW;
 492
 493 #ifndef __wcstol_internal_defined
 494 extern long int __wcstol_internal (__const wchar_t *__restrict __nptr,
 495                                    wchar_t **__restrict __endptr,
 496                                    int __base, int __group) __THROW;
 497 # define __wcstol_internal_defined      1
 498 #endif
 499 #ifndef __wcstoul_internal_defined
 500 extern unsigned long int __wcstoul_internal (__const wchar_t *__restrict __npt,
 501                                              wchar_t **__restrict __endptr,
 502                                              int __base, int __group) __THROW;
 503 # define __wcstoul_internal_defined     1
 504 #endif
 505 #ifndef __wcstoll_internal_defined
 506 __extension__
 507 extern long long int __wcstoll_internal (__const wchar_t *__restrict __nptr,
 508                                          wchar_t **__restrict __endptr,
 509                                          int __base, int __group) __THROW;
 510 # define __wcstoll_internal_defined     1
 511 #endif
 512 #ifndef __wcstoull_internal_defined
 513 __extension__
 514 extern unsigned long long int __wcstoull_internal (__const wchar_t *
 515                                                    __restrict __nptr,
 516                                                    wchar_t **
 517                                                    __restrict __endptr,
 518                                                    int __base,
 519                                                    int __group) __THROW;
 520 # define __wcstoull_internal_defined    1
 521 #endif
 522
 523
 524 #if defined __OPTIMIZE__ && __GNUC__ >= 2
 525 /* Define inline functions which call the internal entry points.  */
 526 __BEGIN_NAMESPACE_C99
 527
 528 extern __inline double wcstod (__const wchar_t *__restrict __nptr,
 529                                wchar_t **__restrict __endptr) __THROW
 530 { return __wcstod_internal (__nptr, __endptr, 0); }
 531 extern __inline long int wcstol (__const wchar_t *__restrict __nptr,
 532                                  wchar_t **__restrict __endptr,
 533                                  int __base) __THROW
 534 { return __wcstol_internal (__nptr, __endptr, __base, 0); }
 535 extern __inline unsigned long int wcstoul (__const wchar_t *__restrict __nptr,
 536                                            wchar_t **__restrict __endptr,
 537                                            int __base) __THROW
 538 { return __wcstoul_internal (__nptr, __endptr, __base, 0); }
 539 __END_NAMESPACE_C99
 540
 541 # ifdef __USE_GNU
 542 extern __inline float wcstof (__const wchar_t *__restrict __nptr,
 543                               wchar_t **__restrict __endptr) __THROW
 544 { return __wcstof_internal (__nptr, __endptr, 0); }
 545 extern __inline long double wcstold (__const wchar_t *__restrict __nptr,
 546                                      wchar_t **__restrict __endptr) __THROW
 547 { return __wcstold_internal (__nptr, __endptr, 0); }
 548
 549
 550 __extension__
 551 extern __inline long long int wcstoq (__const wchar_t *__restrict __nptr,
 552                                       wchar_t **__restrict __endptr,
 553                                       int __base) __THROW
 554 { return __wcstoll_internal (__nptr, __endptr, __base, 0); }
 555 __extension__
 556 extern __inline unsigned long long int wcstouq (__const wchar_t *
 557                                                 __restrict __nptr,
 558                                                 wchar_t **__restrict __endptr,
 559                                                 int __base) __THROW
 560 { return __wcstoull_internal (__nptr, __endptr, __base, 0); }
 561 # endif /* Use GNU.  */
 562 #endif /* Optimizing GCC >=2.  */
 563
 564
 565 #ifdef  __USE_GNU
 566 /* Copy SRC to DEST, returning the address of the terminating L'\0' in
 567    DEST.  */
 568 extern wchar_t *wcpcpy (wchar_t *__dest, __const wchar_t *__src) __THROW;
 569
 570 /* Copy no more than N characters of SRC to DEST, returning the address of
 571    the last character written into DEST.  */
 572 extern wchar_t *wcpncpy (wchar_t *__dest, __const wchar_t *__src, size_t __n)
 573      __THROW;
 574 #endif  /* use GNU */
 575
 576
 577 /* Wide character I/O functions.  */
 578 #if defined __USE_ISOC99 || defined __USE_UNIX98
 579 __BEGIN_NAMESPACE_C99
 580
 581 /* Select orientation for stream.  */
 582 extern int fwide (__FILE *__fp, int __mode) __THROW;
 583
 584
 585 /* Write formatted output to STREAM.
 586
 587    This function is a possible cancellation point and therefore not
 588    marked with __THROW.  */
 589 extern int fwprintf (__FILE *__restrict __stream,
 590                      __const wchar_t *__restrict __format, ...)
 591      /* __attribute__ ((__format__ (__wprintf__, 2, 3))) */;
 592 /* Write formatted output to stdout.
 593
 594    This function is a possible cancellation point and therefore not
 595    marked with __THROW.  */
 596 extern int wprintf (__const wchar_t *__restrict __format, ...)
 597      /* __attribute__ ((__format__ (__wprintf__, 1, 2))) */;
 598 /* Write formatted output of at most N characters to S.  */
 599 extern int swprintf (wchar_t *__restrict __s, size_t __n,
 600                      __const wchar_t *__restrict __format, ...)
 601      __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 4))) */;
 602
 603 /* Write formatted output to S from argument list ARG.
 604
 605    This function is a possible cancellation point and therefore not
 606    marked with __THROW.  */
 607 extern int vfwprintf (__FILE *__restrict __s,
 608                       __const wchar_t *__restrict __format,
 609                       __gnuc_va_list __arg)
 610      /* __attribute__ ((__format__ (__wprintf__, 2, 0))) */;
 611 /* Write formatted output to stdout from argument list ARG.
 612
 613    This function is a possible cancellation point and therefore not
 614    marked with __THROW.  */
 615 extern int vwprintf (__const wchar_t *__restrict __format,
 616                      __gnuc_va_list __arg)
 617      /* __attribute__ ((__format__ (__wprintf__, 1, 0))) */;
 618 /* Write formatted output of at most N character to S from argument
 619    list ARG.  */
 620 extern int vswprintf (wchar_t *__restrict __s, size_t __n,
 621                       __const wchar_t *__restrict __format,
 622                       __gnuc_va_list __arg)
 623      __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */;
 624
 625
 626 /* Read formatted input from STREAM.
 627
 628    This function is a possible cancellation point and therefore not
 629    marked with __THROW.  */
 630 extern int fwscanf (__FILE *__restrict __stream,
 631                     __const wchar_t *__restrict __format, ...)
 632      /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
 633 /* Read formatted input from stdin.
 634
 635    This function is a possible cancellation point and therefore not
 636    marked with __THROW.  */
 637 extern int wscanf (__const wchar_t *__restrict __format, ...)
 638      /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;
 639 /* Read formatted input from S.  */
 640 extern int swscanf (__const wchar_t *__restrict __s,
 641                     __const wchar_t *__restrict __format, ...)
 642      __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
 643
 644 __END_NAMESPACE_C99
 645 #endif /* Use ISO C99 and Unix98. */
 646
 647 #ifdef __USE_ISOC99
 648 __BEGIN_NAMESPACE_C99
 649
 650 /* Read formatted input from S into argument list ARG.
 651
 652    This function is a possible cancellation point and therefore not
 653    marked with __THROW.  */
 654 extern int vfwscanf (__FILE *__restrict __s,
 655                      __const wchar_t *__restrict __format,
 656                      __gnuc_va_list __arg)
 657      /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
 658 /* Read formatted input from stdin into argument list ARG.
 659
 660    This function is a possible cancellation point and therefore not
 661    marked with __THROW.  */
 662 extern int vwscanf (__const wchar_t *__restrict __format,
 663                     __gnuc_va_list __arg)
 664      /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */;
 665 /* Read formatted input from S into argument list ARG.  */
 666 extern int vswscanf (__const wchar_t *__restrict __s,
 667                      __const wchar_t *__restrict __format,
 668                      __gnuc_va_list __arg)
 669      __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
 670
 671 __END_NAMESPACE_C99
 672 #endif /* Use ISO C99. */
 673
 674
 675 __BEGIN_NAMESPACE_C99
 676 /* Read a character from STREAM.
 677
 678    These functions are possible cancellation points and therefore not
 679    marked with __THROW.  */
 680 extern wint_t fgetwc (__FILE *__stream);
 681 extern wint_t getwc (__FILE *__stream);
 682
 683 /* Read a character from stdin.
 684
 685    This function is a possible cancellation point and therefore not
 686    marked with __THROW.  */
 687 extern wint_t getwchar (void);
 688
 689
 690 /* Write a character to STREAM.
 691
 692    These functions are possible cancellation points and therefore not
 693    marked with __THROW.  */
 694 extern wint_t fputwc (wchar_t __wc, __FILE *__stream);
 695 extern wint_t putwc (wchar_t __wc, __FILE *__stream);
 696
 697 /* Write a character to stdout.
 698
 699    This function is a possible cancellation points and therefore not
 700    marked with __THROW.  */
 701 extern wint_t putwchar (wchar_t __wc);
 702
 703
 704 /* Get a newline-terminated wide character string of finite length
 705    from STREAM.
 706
 707    This function is a possible cancellation points and therefore not
 708    marked with __THROW.  */
 709 extern wchar_t *fgetws (wchar_t *__restrict __ws, int __n,
 710                         __FILE *__restrict __stream);
 711
 712 /* Write a string to STREAM.
 713
 714    This function is a possible cancellation points and therefore not
 715    marked with __THROW.  */
 716 extern int fputws (__const wchar_t *__restrict __ws,
 717                    __FILE *__restrict __stream);
 718
 719
 720 /* Push a character back onto the input buffer of STREAM.
 721
 722    This function is a possible cancellation points and therefore not
 723    marked with __THROW.  */
 724 extern wint_t ungetwc (wint_t __wc, __FILE *__stream);
 725 __END_NAMESPACE_C99
 726
 727
 728 #ifdef __USE_GNU
 729 /* These are defined to be equivalent to the `char' functions defined
 730    in POSIX.1:1996.
 731
 732    These functions are not part of POSIX and therefore no official
 733    cancellation point.  But due to similarity with an POSIX interface
 734    or due to the implementation they are cancellation points and
 735    therefore not marked with __THROW.  */
 736 extern wint_t getwc_unlocked (__FILE *__stream);
 737 extern wint_t getwchar_unlocked (void);
 738
 739 /* This is the wide character version of a GNU extension.
 740
 741    This function is not part of POSIX and therefore no official
 742    cancellation point.  But due to similarity with an POSIX interface
 743    or due to the implementation it is a cancellation point and
 744    therefore not marked with __THROW.  */
 745 extern wint_t fgetwc_unlocked (__FILE *__stream);
 746
 747 /* Faster version when locking is not necessary.
 748
 749    This function is not part of POSIX and therefore no official
 750    cancellation point.  But due to similarity with an POSIX interface
 751    or due to the implementation it is a cancellation point and
 752    therefore not marked with __THROW.  */
 753 extern wint_t fputwc_unlocked (wchar_t __wc, __FILE *__stream);
 754
 755 /* These are defined to be equivalent to the `char' functions defined
 756    in POSIX.1:1996.
 757
 758    These functions are not part of POSIX and therefore no official
 759    cancellation point.  But due to similarity with an POSIX interface
 760    or due to the implementation they are cancellation points and
 761    therefore not marked with __THROW.  */
 762 extern wint_t putwc_unlocked (wchar_t __wc, __FILE *__stream);
 763 extern wint_t putwchar_unlocked (wchar_t __wc);
 764
 765
 766 /* This function does the same as `fgetws' but does not lock the stream.
 767
 768    This function is not part of POSIX and therefore no official
 769    cancellation point.  But due to similarity with an POSIX interface
 770    or due to the implementation it is a cancellation point and
 771    therefore not marked with __THROW.  */
 772 extern wchar_t *fgetws_unlocked (wchar_t *__restrict __ws, int __n,
 773                                  __FILE *__restrict __stream);
 774
 775 /* This function does the same as `fputws' but does not lock the stream.
 776
 777    This function is not part of POSIX and therefore no official
 778    cancellation point.  But due to similarity with an POSIX interface
 779    or due to the implementation it is a cancellation point and
 780    therefore not marked with __THROW.  */
 781 extern int fputws_unlocked (__const wchar_t *__restrict __ws,
 782                             __FILE *__restrict __stream);
 783 #endif
 784
 785
 786 __BEGIN_NAMESPACE_C99
 787 /* Format TP into S according to FORMAT.
 788    Write no more than MAXSIZE wide characters and return the number
 789    of wide characters written, or 0 if it would exceed MAXSIZE.  */
 790 extern size_t wcsftime (wchar_t *__restrict __s, size_t __maxsize,
 791                         __const wchar_t *__restrict __format,
 792                         __const struct tm *__restrict __tp) __THROW;
 793 __END_NAMESPACE_C99
 794
 795 # ifdef __USE_GNU
 796 # include <xlocale.h>
 797
 798 /* Similar to `wcsftime' but takes the information from
 799    the provided locale and not the global locale.  */
 800 extern size_t wcsftime_l (wchar_t *__restrict __s, size_t __maxsize,
 801                           __const wchar_t *__restrict __format,
 802                           __const struct tm *__restrict __tp,
 803                           __locale_t __loc) __THROW;
 804 # endif
 805
 806 /* The X/Open standard demands that most of the functions defined in
 807    the <wctype.h> header must also appear here.  This is probably
 808    because some X/Open members wrote their implementation before the
 809    ISO C standard was published and introduced the better solution.
 810    We have to provide these definitions for compliance reasons but we
 811    do this nonsense only if really necessary.  */
 812 #if defined __USE_UNIX98 && !defined __USE_GNU
 813 # define __need_iswxxx
 814 # include <wctype.h>
 815 #endif
 816
 817 __END_DECLS
 818
 819 #endif  /* _WCHAR_H defined */
 820
 821 #endif /* wchar.h  */