wcsmbs/wchar.h

   1 /* Copyright (C) 1995-99,2000,01,02 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 #endif
  62
  63
  64 #ifndef __mbstate_t_defined
  65 # define __mbstate_t_defined    1
  66 /* Conversion state information.  */
  67 typedef struct
  68 {
  69   int __count;
  70   union
  71   {
  72     wint_t __wch;
  73     char __wchb[4];
  74   } __value;            /* Value so far.  */
  75 } __mbstate_t;
  76 #endif
  77 #undef __need_mbstate_t
  78
  79
  80 /* The rest of the file is only used if used if __need_mbstate_t is not
  81    defined.  */
  82 #ifdef _WCHAR_H
  83
  84 /* Public type.  */
  85 typedef __mbstate_t mbstate_t;
  86
  87 #ifndef WCHAR_MIN
  88 /* These constants might also be defined in <inttypes.h>.  */
  89 # define WCHAR_MIN __WCHAR_MIN
  90 # define WCHAR_MAX __WCHAR_MAX
  91 #endif
  92
  93 #ifndef WEOF
  94 # define WEOF (0xffffffffu)
  95 #endif
  96
  97 /* For XPG4 compliance we have to define the stuff from <wctype.h> here
  98    as well.  */
  99 #if defined __USE_XOPEN && !defined __USE_UNIX98
 100 # include <wctype.h>
 101 #endif
 102
 103 /* This incomplete type is defined in <time.h> but needed here because
 104    of `wcsftime'.  */
 105 struct tm;
 106
 107
 108 __BEGIN_DECLS
 109
 110 /* Copy SRC to DEST.  */
 111 extern wchar_t *wcscpy (wchar_t *__restrict __dest,
 112                         __const wchar_t *__restrict __src) __THROW;
 113 /* Copy no more than N wide-characters of SRC to DEST.  */
 114 extern wchar_t *wcsncpy (wchar_t *__restrict __dest,
 115                          __const wchar_t *__restrict __src, size_t __n)
 116      __THROW;
 117
 118 /* Append SRC onto DEST.  */
 119 extern wchar_t *wcscat (wchar_t *__restrict __dest,
 120                         __const wchar_t *__restrict __src) __THROW;
 121 /* Append no more than N wide-characters of SRC onto DEST.  */
 122 extern wchar_t *wcsncat (wchar_t *__restrict __dest,
 123                          __const wchar_t *__restrict __src, size_t __n)
 124      __THROW;
 125
 126 /* Compare S1 and S2.  */
 127 extern int wcscmp (__const wchar_t *__s1, __const wchar_t *__s2)
 128      __THROW __attribute_pure__;
 129 /* Compare N wide-characters of S1 and S2.  */
 130 extern int wcsncmp (__const wchar_t *__s1, __const wchar_t *__s2, size_t __n)
 131      __THROW __attribute_pure__;
 132
 133 #ifdef __USE_GNU
 134 /* Compare S1 and S2, ignoring case.  */
 135 extern int wcscasecmp (__const wchar_t *__s1, __const wchar_t *__s2) __THROW;
 136
 137 /* Compare no more than N chars of S1 and S2, ignoring case.  */
 138 extern int wcsncasecmp (__const wchar_t *__s1, __const wchar_t *__s2,
 139                         size_t __n) __THROW;
 140
 141 /* Similar to the two functions above but take the information from
 142    the provided locale and not the global locale.  */
 143 # include <xlocale.h>
 144
 145 extern int __wcscasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,
 146                            __locale_t __loc) __THROW;
 147 extern int wcscasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,
 148                          __locale_t __loc) __THROW;
 149
 150 extern int __wcsncasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,
 151                             size_t __n, __locale_t __loc) __THROW;
 152 extern int wcsncasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,
 153                           size_t __n, __locale_t __loc) __THROW;
 154 #endif
 155
 156 /* Compare S1 and S2, both interpreted as appropriate to the
 157    LC_COLLATE category of the current locale.  */
 158 extern int wcscoll (__const wchar_t *__s1, __const wchar_t *__s2) __THROW;
 159 /* Transform S2 into array pointed to by S1 such that if wcscmp is
 160    applied to two transformed strings the result is the as applying
 161    `wcscoll' to the original strings.  */
 162 extern size_t wcsxfrm (wchar_t *__restrict __s1,
 163                        __const wchar_t *__restrict __s2, size_t __n) __THROW;
 164
 165 #ifdef __USE_GNU
 166 /* Similar to the two functions above but take the information from
 167    the provided locale and not the global locale.  */
 168
 169 /* Compare S1 and S2, both interpreted as appropriate to the
 170    LC_COLLATE category of the given locale.  */
 171 extern int __wcscoll_l (__const wchar_t *__s1, __const wchar_t *__s2,
 172                         __locale_t __loc) __THROW;
 173 extern int wcscoll_l (__const wchar_t *__s1, __const wchar_t *__s2,
 174                       __locale_t __loc) __THROW;
 175
 176 /* Transform S2 into array pointed to by S1 such that if wcscmp is
 177    applied to two transformed strings the result is the as applying
 178    `wcscoll' to the original strings.  */
 179 extern size_t __wcsxfrm_l (wchar_t *__s1, __const wchar_t *__s2,
 180                            size_t __n, __locale_t __loc) __THROW;
 181 extern size_t wcsxfrm_l (wchar_t *__s1, __const wchar_t *__s2,
 182                          size_t __n, __locale_t __loc) __THROW;
 183
 184 /* Duplicate S, returning an identical malloc'd string.  */
 185 extern wchar_t *wcsdup (__const wchar_t *__s) __THROW __attribute_malloc__;
 186 #endif
 187
 188 /* Find the first occurrence of WC in WCS.  */
 189 extern wchar_t *wcschr (__const wchar_t *__wcs, wchar_t __wc)
 190      __THROW __attribute_pure__;
 191 /* Find the last occurrence of WC in WCS.  */
 192 extern wchar_t *wcsrchr (__const wchar_t *__wcs, wchar_t __wc)
 193      __THROW __attribute_pure__;
 194
 195 #ifdef __USE_GNU
 196 /* This function is similar to `wcschr'.  But it returns a pointer to
 197    the closing NUL wide character in case C is not found in S.  */
 198 extern wchar_t *wcschrnul (__const wchar_t *__s, wchar_t __wc)
 199      __THROW __attribute_pure__;
 200 #endif
 201
 202 /* Return the length of the initial segmet of WCS which
 203    consists entirely of wide characters not in REJECT.  */
 204 extern size_t wcscspn (__const wchar_t *__wcs, __const wchar_t *__reject)
 205      __THROW __attribute_pure__;
 206 /* Return the length of the initial segmet of WCS which
 207    consists entirely of wide characters in  ACCEPT.  */
 208 extern size_t wcsspn (__const wchar_t *__wcs, __const wchar_t *__accept)
 209      __THROW __attribute_pure__;
 210 /* Find the first occurrence in WCS of any character in ACCEPT.  */
 211 extern wchar_t *wcspbrk (__const wchar_t *__wcs, __const wchar_t *__accept)
 212      __THROW __attribute_pure__;
 213 /* Find the first occurrence of NEEDLE in HAYSTACK.  */
 214 extern wchar_t *wcsstr (__const wchar_t *__haystack, __const wchar_t *__needle)
 215      __THROW __attribute_pure__;
 216
 217 #ifdef __USE_XOPEN
 218 /* Another name for `wcsstr' from XPG4.  */
 219 extern wchar_t *wcswcs (__const wchar_t *__haystack, __const wchar_t *__needle)
 220      __THROW __attribute_pure__;
 221 #endif
 222
 223 /* Divide WCS into tokens separated by characters in DELIM.  */
 224 extern wchar_t *wcstok (wchar_t *__restrict __s,
 225                         __const wchar_t *__restrict __delim,
 226                         wchar_t **__restrict __ptr) __THROW;
 227
 228 /* Return the number of wide characters in S.  */
 229 extern size_t wcslen (__const wchar_t *__s) __THROW __attribute_pure__;
 230
 231 #ifdef __USE_GNU
 232 /* Return the number of wide characters in S, but at most MAXLEN.  */
 233 extern size_t wcsnlen (__const wchar_t *__s, size_t __maxlen)
 234      __THROW __attribute_pure__;
 235 #endif
 236
 237
 238 /* Search N wide characters of S for C.  */
 239 extern wchar_t *wmemchr (__const wchar_t *__s, wchar_t __c, size_t __n)
 240      __THROW __attribute_pure__;
 241
 242 /* Compare N wide characters of S1 and S2.  */
 243 extern int wmemcmp (__const wchar_t *__restrict __s1,
 244                     __const wchar_t *__restrict __s2, size_t __n)
 245      __THROW __attribute_pure__;
 246
 247 /* Copy N wide characters of SRC to DEST.  */
 248 extern wchar_t *wmemcpy (wchar_t *__restrict __s1,
 249                          __const wchar_t *__restrict __s2, size_t __n) __THROW;
 250
 251 /* Copy N wide characters of SRC to DEST, guaranteeing
 252    correct behavior for overlapping strings.  */
 253 extern wchar_t *wmemmove (wchar_t *__s1, __const wchar_t *__s2, size_t __n)
 254      __THROW;
 255
 256 /* Set N wide characters of S to C.  */
 257 extern wchar_t *wmemset (wchar_t *__s, wchar_t __c, size_t __n) __THROW;
 258
 259 #ifdef __USE_GNU
 260 /* Copy N wide characters of SRC to DEST and return pointer to following
 261    wide character.  */
 262 extern wchar_t *wmempcpy (wchar_t *__restrict __s1,
 263                           __const wchar_t *__restrict __s2, size_t __n)
 264      __THROW;
 265 #endif
 266
 267
 268 /* Determine whether C constitutes a valid (one-byte) multibyte
 269    character.  */
 270 extern wint_t btowc (int __c) __THROW;
 271
 272 /* Determine whether C corresponds to a member of the extended
 273    character set whose multibyte representation is a single byte.  */
 274 extern int wctob (wint_t __c) __THROW;
 275
 276 /* Determine whether PS points to an object representing the initial
 277    state.  */
 278 extern int mbsinit (__const mbstate_t *__ps) __THROW __attribute_pure__;
 279
 280 /* Write wide character representation of multibyte character pointed
 281    to by S to PWC.  */
 282 extern size_t mbrtowc (wchar_t *__restrict __pwc,
 283                        __const char *__restrict __s, size_t __n,
 284                        mbstate_t *__p) __THROW;
 285
 286 /* Write multibyte representation of wide character WC to S.  */
 287 extern size_t wcrtomb (char *__restrict __s, wchar_t __wc,
 288                        mbstate_t *__restrict __ps) __THROW;
 289
 290 /* Return number of bytes in multibyte character pointed to by S.  */
 291 extern size_t __mbrlen (__const char *__restrict __s, size_t __n,
 292                         mbstate_t *__restrict __ps) __THROW;
 293 extern size_t mbrlen (__const char *__restrict __s, size_t __n,
 294                       mbstate_t *__restrict __ps) __THROW;
 295
 296 #ifdef __USE_EXTERN_INLINES
 297 /* Define inline function as optimization.  */
 298 extern __inline size_t mbrlen (__const char *__restrict __s, size_t __n,
 299                                mbstate_t *__restrict __ps) __THROW
 300 { return (__ps != NULL
 301           ? mbrtowc (NULL, __s, __n, __ps) : __mbrlen (__s, __n, NULL)); }
 302 #endif
 303
 304 /* Write wide character representation of multibyte character string
 305    SRC to DST.  */
 306 extern size_t mbsrtowcs (wchar_t *__restrict __dst,
 307                          __const char **__restrict __src, size_t __len,
 308                          mbstate_t *__restrict __ps) __THROW;
 309
 310 /* Write multibyte character representation of wide character string
 311    SRC to DST.  */
 312 extern size_t wcsrtombs (char *__restrict __dst,
 313                          __const wchar_t **__restrict __src, size_t __len,
 314                          mbstate_t *__restrict __ps) __THROW;
 315
 316
 317 #ifdef  __USE_GNU
 318 /* Write wide character representation of at most NMC bytes of the
 319    multibyte character string SRC to DST.  */
 320 extern size_t mbsnrtowcs (wchar_t *__restrict __dst,
 321                           __const char **__restrict __src, size_t __nmc,
 322                           size_t __len, mbstate_t *__restrict __ps) __THROW;
 323
 324 /* Write multibyte character representation of at most NWC characters
 325    from the wide character string SRC to DST.  */
 326 extern size_t wcsnrtombs (char *__restrict __dst,
 327                           __const wchar_t **__restrict __src,
 328                           size_t __nwc, size_t __len,
 329                           mbstate_t *__restrict __ps) __THROW;
 330 #endif  /* use GNU */
 331
 332
 333 /* The following functions are extensions found in X/Open CAE.  */
 334 #ifdef __USE_XOPEN
 335 /* Determine number of column positions required for C.  */
 336 extern int wcwidth (wchar_t __c) __THROW;
 337
 338 /* Determine number of column positions required for first N wide
 339    characters (or fewer if S ends before this) in S.  */
 340 extern int wcswidth (__const wchar_t *__s, size_t __n) __THROW;
 341 #endif  /* Use X/Open.  */
 342
 343
 344 /* Convert initial portion of the wide string NPTR to `double'
 345    representation.  */
 346 extern double wcstod (__const wchar_t *__restrict __nptr,
 347                       wchar_t **__restrict __endptr) __THROW;
 348
 349 #ifdef __USE_ISOC99
 350 /* Likewise for `float' and `long double' sizes of floating-point numbers.  */
 351 extern float wcstof (__const wchar_t *__restrict __nptr,
 352                      wchar_t **__restrict __endptr) __THROW;
 353 extern long double wcstold (__const wchar_t *__restrict __nptr,
 354                             wchar_t **__restrict __endptr) __THROW;
 355 #endif /* C99 */
 356
 357
 358 /* Convert initial portion of wide string NPTR to `long int'
 359    representation.  */
 360 extern long int wcstol (__const wchar_t *__restrict __nptr,
 361                         wchar_t **__restrict __endptr, int __base) __THROW;
 362
 363 /* Convert initial portion of wide string NPTR to `unsigned long int'
 364    representation.  */
 365 extern unsigned long int wcstoul (__const wchar_t *__restrict __nptr,
 366                                   wchar_t **__restrict __endptr, int __base)
 367      __THROW;
 368
 369 #if defined __GNUC__ && defined __USE_GNU
 370 /* Convert initial portion of wide string NPTR to `long int'
 371    representation.  */
 372 __extension__
 373 extern long long int wcstoq (__const wchar_t *__restrict __nptr,
 374                              wchar_t **__restrict __endptr, int __base)
 375      __THROW;
 376
 377 /* Convert initial portion of wide string NPTR to `unsigned long long int'
 378    representation.  */
 379 __extension__
 380 extern unsigned long long int wcstouq (__const wchar_t *__restrict __nptr,
 381                                        wchar_t **__restrict __endptr,
 382                                        int __base) __THROW;
 383 #endif /* GCC and use GNU.  */
 384
 385 #if defined __USE_ISOC99 || (defined __GNUC__ && defined __USE_GNU)
 386 /* Convert initial portion of wide string NPTR to `long int'
 387    representation.  */
 388 __extension__
 389 extern long long int wcstoll (__const wchar_t *__restrict __nptr,
 390                               wchar_t **__restrict __endptr, int __base)
 391      __THROW;
 392
 393 /* Convert initial portion of wide string NPTR to `unsigned long long int'
 394    representation.  */
 395 __extension__
 396 extern unsigned long long int wcstoull (__const wchar_t *__restrict __nptr,
 397                                         wchar_t **__restrict __endptr,
 398                                         int __base) __THROW;
 399 #endif /* ISO C99 or GCC and GNU.  */
 400
 401 #ifdef __USE_GNU
 402 /* The concept of one static locale per category is not very well
 403    thought out.  Many applications will need to process its data using
 404    information from several different locales.  Another application is
 405    the implementation of the internationalization handling in the
 406    upcoming ISO C++ standard library.  To support this another set of
 407    the functions using locale data exist which have an additional
 408    argument.
 409
 410    Attention: all these functions are *not* standardized in any form.
 411    This is a proof-of-concept implementation.  */
 412
 413 /* Structure for reentrant locale using functions.  This is an
 414    (almost) opaque type for the user level programs.  */
 415 # include <xlocale.h>
 416
 417 /* Special versions of the functions above which take the locale to
 418    use as an additional parameter.  */
 419 extern long int __wcstol_l (__const wchar_t *__restrict __nptr,
 420                             wchar_t **__restrict __endptr, int __base,
 421                             __locale_t __loc) __THROW;
 422 extern long int wcstol_l (__const wchar_t *__restrict __nptr,
 423                           wchar_t **__restrict __endptr, int __base,
 424                           __locale_t __loc) __THROW;
 425
 426 extern unsigned long int __wcstoul_l (__const wchar_t *__restrict __nptr,
 427                                       wchar_t **__restrict __endptr,
 428                                       int __base, __locale_t __loc) __THROW;
 429 extern unsigned long int wcstoul_l (__const wchar_t *__restrict __nptr,
 430                                     wchar_t **__restrict __endptr,
 431                                     int __base, __locale_t __loc) __THROW;
 432
 433 __extension__
 434 extern long long int __wcstoll_l (__const wchar_t *__restrict __nptr,
 435                                   wchar_t **__restrict __endptr,
 436                                   int __base, __locale_t __loc) __THROW;
 437 __extension__
 438 extern long long int wcstoll_l (__const wchar_t *__restrict __nptr,
 439                                 wchar_t **__restrict __endptr,
 440                                 int __base, __locale_t __loc) __THROW;
 441
 442 __extension__
 443 extern unsigned long long int __wcstoull_l (__const wchar_t *__restrict __nptr,
 444                                             wchar_t **__restrict __endptr,
 445                                             int __base, __locale_t __loc)
 446      __THROW;
 447 __extension__
 448 extern unsigned long long int wcstoull_l (__const wchar_t *__restrict __nptr,
 449                                           wchar_t **__restrict __endptr,
 450                                           int __base, __locale_t __loc)
 451      __THROW;
 452
 453 extern double __wcstod_l (__const wchar_t *__restrict __nptr,
 454                           wchar_t **__restrict __endptr, __locale_t __loc)
 455      __THROW;
 456 extern double wcstod_l (__const wchar_t *__restrict __nptr,
 457                         wchar_t **__restrict __endptr, __locale_t __loc)
 458      __THROW;
 459
 460 extern float __wcstof_l (__const wchar_t *__restrict __nptr,
 461                          wchar_t **__restrict __endptr, __locale_t __loc)
 462      __THROW;
 463 extern float wcstof_l (__const wchar_t *__restrict __nptr,
 464                        wchar_t **__restrict __endptr, __locale_t __loc)
 465      __THROW;
 466
 467 extern long double __wcstold_l (__const wchar_t *__restrict __nptr,
 468                                 wchar_t **__restrict __endptr,
 469                                 __locale_t __loc) __THROW;
 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
 522 extern __inline double wcstod (__const wchar_t *__restrict __nptr,
 523                                wchar_t **__restrict __endptr) __THROW
 524 { return __wcstod_internal (__nptr, __endptr, 0); }
 525 extern __inline long int wcstol (__const wchar_t *__restrict __nptr,
 526                                  wchar_t **__restrict __endptr,
 527                                  int __base) __THROW
 528 { return __wcstol_internal (__nptr, __endptr, __base, 0); }
 529 extern __inline unsigned long int wcstoul (__const wchar_t *__restrict __nptr,
 530                                            wchar_t **__restrict __endptr,
 531                                            int __base) __THROW
 532 { return __wcstoul_internal (__nptr, __endptr, __base, 0); }
 533
 534 # ifdef __USE_GNU
 535 extern __inline float wcstof (__const wchar_t *__restrict __nptr,
 536                               wchar_t **__restrict __endptr) __THROW
 537 { return __wcstof_internal (__nptr, __endptr, 0); }
 538 extern __inline long double wcstold (__const wchar_t *__restrict __nptr,
 539                                      wchar_t **__restrict __endptr) __THROW
 540 { return __wcstold_internal (__nptr, __endptr, 0); }
 541
 542
 543 __extension__
 544 extern __inline long long int wcstoq (__const wchar_t *__restrict __nptr,
 545                                       wchar_t **__restrict __endptr,
 546                                       int __base) __THROW
 547 { return __wcstoll_internal (__nptr, __endptr, __base, 0); }
 548 __extension__
 549 extern __inline unsigned long long int wcstouq (__const wchar_t *
 550                                                 __restrict __nptr,
 551                                                 wchar_t **__restrict __endptr,
 552                                                 int __base) __THROW
 553 { return __wcstoull_internal (__nptr, __endptr, __base, 0); }
 554 # endif /* Use GNU.  */
 555 #endif /* Optimizing GCC >=2.  */
 556
 557
 558 #ifdef  __USE_GNU
 559 /* Copy SRC to DEST, returning the address of the terminating L'\0' in
 560    DEST.  */
 561 extern wchar_t *wcpcpy (wchar_t *__dest, __const wchar_t *__src) __THROW;
 562
 563 /* Copy no more than N characters of SRC to DEST, returning the address of
 564    the last character written into DEST.  */
 565 extern wchar_t *wcpncpy (wchar_t *__dest, __const wchar_t *__src, size_t __n)
 566      __THROW;
 567 #endif  /* use GNU */
 568
 569
 570 /* Wide character I/O functions.  */
 571 #if defined __USE_ISOC99 || defined __USE_UNIX98
 572
 573 /* Select orientation for stream.  */
 574 extern int fwide (__FILE *__fp, int __mode) __THROW;
 575
 576
 577 /* Write formatted output to STREAM.  */
 578 extern int fwprintf (__FILE *__restrict __stream,
 579                      __const wchar_t *__restrict __format, ...)
 580      __THROW /* __attribute__ ((__format__ (__wprintf__, 2, 3))) */;
 581 /* Write formatted output to stdout.  */
 582 extern int wprintf (__const wchar_t *__restrict __format, ...)
 583      __THROW /* __attribute__ ((__format__ (__wprintf__, 1, 2))) */;
 584 /* Write formatted output of at most N characters to S.  */
 585 extern int swprintf (wchar_t *__restrict __s, size_t __n,
 586                      __const wchar_t *__restrict __format, ...)
 587      __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 4))) */;
 588
 589 /* Write formatted output to S from argument list ARG.  */
 590 extern int vfwprintf (__FILE *__restrict __s,
 591                       __const wchar_t *__restrict __format,
 592                       __gnuc_va_list __arg)
 593      __THROW /* __attribute__ ((__format__ (__wprintf__, 2, 0))) */;
 594 /* Write formatted output to stdout from argument list ARG.  */
 595 extern int vwprintf (__const wchar_t *__restrict __format,
 596                      __gnuc_va_list __arg)
 597      __THROW /* __attribute__ ((__format__ (__wprintf__, 1, 0))) */;
 598 /* Write formatted output of at most N character to S from argument
 599    list ARG.  */
 600 extern int vswprintf (wchar_t *__restrict __s, size_t __n,
 601                       __const wchar_t *__restrict __format,
 602                       __gnuc_va_list __arg)
 603      __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */;
 604
 605
 606 /* Read formatted input from STREAM.  */
 607 extern int fwscanf (__FILE *__restrict __stream,
 608                     __const wchar_t *__restrict __format, ...)
 609      __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
 610 /* Read formatted input from stdin.  */
 611 extern int wscanf (__const wchar_t *__restrict __format, ...)
 612      __THROW /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;
 613 /* Read formatted input from S.  */
 614 extern int swscanf (__const wchar_t *__restrict __s,
 615                     __const wchar_t *__restrict __format, ...)
 616      __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
 617 #endif /* Use ISO C99 and Unix98. */
 618
 619 #ifdef __USE_ISOC99
 620 /* Read formatted input from S into argument list ARG.  */
 621 extern int vfwscanf (__FILE *__restrict __s,
 622                      __const wchar_t *__restrict __format,
 623                      __gnuc_va_list __arg)
 624      __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
 625 /* Read formatted input from stdin into argument list ARG.  */
 626 extern int vwscanf (__const wchar_t *__restrict __format,
 627                     __gnuc_va_list __arg)
 628      __THROW /* __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 #endif /* Use ISO C99. */
 635
 636
 637 /* Read a character from STREAM.  */
 638 extern wint_t fgetwc (__FILE *__stream) __THROW;
 639 extern wint_t getwc (__FILE *__stream) __THROW;
 640
 641 /* Read a character from stdin.  */
 642 extern wint_t getwchar (void) __THROW;
 643
 644
 645 /* Write a character to STREAM.  */
 646 extern wint_t fputwc (wchar_t __wc, __FILE *__stream) __THROW;
 647 extern wint_t putwc (wchar_t __wc, __FILE *__stream) __THROW;
 648
 649 /* Write a character to stdout.  */
 650 extern wint_t putwchar (wchar_t __wc) __THROW;
 651
 652
 653 /* Get a newline-terminated wide character string of finite length
 654    from STREAM.  */
 655 extern wchar_t *fgetws (wchar_t *__restrict __ws, int __n,
 656                         __FILE *__restrict __stream) __THROW;
 657
 658 /* Write a string to STREAM.  */
 659 extern int fputws (__const wchar_t *__restrict __ws,
 660                    __FILE *__restrict __stream) __THROW;
 661
 662
 663 /* Push a character back onto the input buffer of STREAM.  */
 664 extern wint_t ungetwc (wint_t __wc, __FILE *__stream) __THROW;
 665
 666
 667 #ifdef __USE_GNU
 668 /* These are defined to be equivalent to the `char' functions defined
 669    in POSIX.1:1996.  */
 670 extern wint_t getwc_unlocked (__FILE *__stream) __THROW;
 671 extern wint_t getwchar_unlocked (void) __THROW;
 672
 673 /* This is the wide character version of a GNU extension.  */
 674 extern wint_t fgetwc_unlocked (__FILE *__stream) __THROW;
 675
 676 /* Faster version when locking is not necessary.  */
 677 extern wint_t fputwc_unlocked (wchar_t __wc, __FILE *__stream) __THROW;
 678
 679 /* These are defined to be equivalent to the `char' functions defined
 680    in POSIX.1:1996.  */
 681 extern wint_t putwc_unlocked (wchar_t __wc, __FILE *__stream) __THROW;
 682 extern wint_t putwchar_unlocked (wchar_t __wc) __THROW;
 683
 684
 685 /* This function does the same as `fgetws' but does not lock the stream.  */
 686 extern wchar_t *fgetws_unlocked (wchar_t *__restrict __ws, int __n,
 687                                  __FILE *__restrict __stream) __THROW;
 688
 689 /* This function does the same as `fputws' but does not lock the stream.  */
 690 extern int fputws_unlocked (__const wchar_t *__restrict __ws,
 691                             __FILE *__restrict __stream) __THROW;
 692 #endif
 693
 694
 695 /* Format TP into S according to FORMAT.
 696    Write no more than MAXSIZE wide characters and return the number
 697    of wide characters written, or 0 if it would exceed MAXSIZE.  */
 698 extern size_t wcsftime (wchar_t *__restrict __s, size_t __maxsize,
 699                         __const wchar_t *__restrict __format,
 700                         __const struct tm *__restrict __tp) __THROW;
 701
 702 /* The X/Open standard demands that most of the functions defined in
 703    the <wctype.h> header must also appear here.  This is probably
 704    because some X/Open members wrote their implementation before the
 705    ISO C standard was published and introduced the better solution.
 706    We have to provide these definitions for compliance reasons but we
 707    do this nonsense only if really necessary.  */
 708 #if defined __USE_UNIX98 && !defined __USE_GNU
 709 # define __need_iswxxx
 710 # include <wctype.h>
 711 #endif
 712
 713 __END_DECLS
 714
 715 #endif  /* _WCHAR_H defined */
 716
 717 #endif /* wchar.h  */