wcsmbs/wchar.h

   1 /* Copyright (C) 1995-2002, 2003, 2004 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
 324 __NTH (mbrlen (__const char *__restrict __s, size_t __n,
 325                mbstate_t *__restrict __ps))
 326 { return (__ps != NULL
 327           ? mbrtowc (NULL, __s, __n, __ps) : __mbrlen (__s, __n, NULL)); }
 328 #endif
 329
 330 __BEGIN_NAMESPACE_C99
 331 /* Write wide character representation of multibyte character string
 332    SRC to DST.  */
 333 extern size_t mbsrtowcs (wchar_t *__restrict __dst,
 334                          __const char **__restrict __src, size_t __len,
 335                          mbstate_t *__restrict __ps) __THROW;
 336
 337 /* Write multibyte character representation of wide character string
 338    SRC to DST.  */
 339 extern size_t wcsrtombs (char *__restrict __dst,
 340                          __const wchar_t **__restrict __src, size_t __len,
 341                          mbstate_t *__restrict __ps) __THROW;
 342 __END_NAMESPACE_C99
 343
 344
 345 #ifdef  __USE_GNU
 346 /* Write wide character representation of at most NMC bytes of the
 347    multibyte character string SRC to DST.  */
 348 extern size_t mbsnrtowcs (wchar_t *__restrict __dst,
 349                           __const char **__restrict __src, size_t __nmc,
 350                           size_t __len, mbstate_t *__restrict __ps) __THROW;
 351
 352 /* Write multibyte character representation of at most NWC characters
 353    from the wide character string SRC to DST.  */
 354 extern size_t wcsnrtombs (char *__restrict __dst,
 355                           __const wchar_t **__restrict __src,
 356                           size_t __nwc, size_t __len,
 357                           mbstate_t *__restrict __ps) __THROW;
 358 #endif  /* use GNU */
 359
 360
 361 /* The following functions are extensions found in X/Open CAE.  */
 362 #ifdef __USE_XOPEN
 363 /* Determine number of column positions required for C.  */
 364 extern int wcwidth (wchar_t __c) __THROW;
 365
 366 /* Determine number of column positions required for first N wide
 367    characters (or fewer if S ends before this) in S.  */
 368 extern int wcswidth (__const wchar_t *__s, size_t __n) __THROW;
 369 #endif  /* Use X/Open.  */
 370
 371
 372 __BEGIN_NAMESPACE_C99
 373 /* Convert initial portion of the wide string NPTR to `double'
 374    representation.  */
 375 extern double wcstod (__const wchar_t *__restrict __nptr,
 376                       wchar_t **__restrict __endptr) __THROW;
 377
 378 #ifdef __USE_ISOC99
 379 /* Likewise for `float' and `long double' sizes of floating-point numbers.  */
 380 extern float wcstof (__const wchar_t *__restrict __nptr,
 381                      wchar_t **__restrict __endptr) __THROW;
 382 extern long double wcstold (__const wchar_t *__restrict __nptr,
 383                             wchar_t **__restrict __endptr) __THROW;
 384 #endif /* C99 */
 385
 386
 387 /* Convert initial portion of wide string NPTR to `long int'
 388    representation.  */
 389 extern long int wcstol (__const wchar_t *__restrict __nptr,
 390                         wchar_t **__restrict __endptr, int __base) __THROW;
 391
 392 /* Convert initial portion of wide string NPTR to `unsigned long int'
 393    representation.  */
 394 extern unsigned long int wcstoul (__const wchar_t *__restrict __nptr,
 395                                   wchar_t **__restrict __endptr, int __base)
 396      __THROW;
 397
 398 #if defined __USE_ISOC99 || (defined __GNUC__ && defined __USE_GNU)
 399 /* Convert initial portion of wide string NPTR to `long int'
 400    representation.  */
 401 __extension__
 402 extern long long int wcstoll (__const wchar_t *__restrict __nptr,
 403                               wchar_t **__restrict __endptr, int __base)
 404      __THROW;
 405
 406 /* Convert initial portion of wide string NPTR to `unsigned long long int'
 407    representation.  */
 408 __extension__
 409 extern unsigned long long int wcstoull (__const wchar_t *__restrict __nptr,
 410                                         wchar_t **__restrict __endptr,
 411                                         int __base) __THROW;
 412 #endif /* ISO C99 or GCC and GNU.  */
 413 __END_NAMESPACE_C99
 414
 415 #if defined __GNUC__ && defined __USE_GNU
 416 /* Convert initial portion of wide string NPTR to `long int'
 417    representation.  */
 418 __extension__
 419 extern long long int wcstoq (__const wchar_t *__restrict __nptr,
 420                              wchar_t **__restrict __endptr, int __base)
 421      __THROW;
 422
 423 /* Convert initial portion of wide string NPTR to `unsigned long long int'
 424    representation.  */
 425 __extension__
 426 extern unsigned long long int wcstouq (__const wchar_t *__restrict __nptr,
 427                                        wchar_t **__restrict __endptr,
 428                                        int __base) __THROW;
 429 #endif /* GCC and use GNU.  */
 430
 431 #ifdef __USE_GNU
 432 /* The concept of one static locale per category is not very well
 433    thought out.  Many applications will need to process its data using
 434    information from several different locales.  Another application is
 435    the implementation of the internationalization handling in the
 436    upcoming ISO C++ standard library.  To support this another set of
 437    the functions using locale data exist which have an additional
 438    argument.
 439
 440    Attention: all these functions are *not* standardized in any form.
 441    This is a proof-of-concept implementation.  */
 442
 443 /* Structure for reentrant locale using functions.  This is an
 444    (almost) opaque type for the user level programs.  */
 445 # include <xlocale.h>
 446
 447 /* Special versions of the functions above which take the locale to
 448    use as an additional parameter.  */
 449 extern long int wcstol_l (__const wchar_t *__restrict __nptr,
 450                           wchar_t **__restrict __endptr, int __base,
 451                           __locale_t __loc) __THROW;
 452
 453 extern unsigned long int wcstoul_l (__const wchar_t *__restrict __nptr,
 454                                     wchar_t **__restrict __endptr,
 455                                     int __base, __locale_t __loc) __THROW;
 456
 457 __extension__
 458 extern long long int wcstoll_l (__const wchar_t *__restrict __nptr,
 459                                 wchar_t **__restrict __endptr,
 460                                 int __base, __locale_t __loc) __THROW;
 461
 462 __extension__
 463 extern unsigned long long int wcstoull_l (__const wchar_t *__restrict __nptr,
 464                                           wchar_t **__restrict __endptr,
 465                                           int __base, __locale_t __loc)
 466      __THROW;
 467
 468 extern double wcstod_l (__const wchar_t *__restrict __nptr,
 469                         wchar_t **__restrict __endptr, __locale_t __loc)
 470      __THROW;
 471
 472 extern float wcstof_l (__const wchar_t *__restrict __nptr,
 473                        wchar_t **__restrict __endptr, __locale_t __loc)
 474      __THROW;
 475
 476 extern long double wcstold_l (__const wchar_t *__restrict __nptr,
 477                               wchar_t **__restrict __endptr,
 478                               __locale_t __loc) __THROW;
 479 #endif /* GNU */
 480
 481
 482 /* The internal entry points for `wcstoX' take an extra flag argument
 483    saying whether or not to parse locale-dependent number grouping.  */
 484 extern double __wcstod_internal (__const wchar_t *__restrict __nptr,
 485                                  wchar_t **__restrict __endptr, int __group)
 486      __THROW;
 487 extern float __wcstof_internal (__const wchar_t *__restrict __nptr,
 488                                 wchar_t **__restrict __endptr, int __group)
 489      __THROW;
 490 extern long double __wcstold_internal (__const wchar_t *__restrict __nptr,
 491                                        wchar_t **__restrict __endptr,
 492                                        int __group) __THROW;
 493
 494 #ifndef __wcstol_internal_defined
 495 extern long int __wcstol_internal (__const wchar_t *__restrict __nptr,
 496                                    wchar_t **__restrict __endptr,
 497                                    int __base, int __group) __THROW;
 498 # define __wcstol_internal_defined      1
 499 #endif
 500 #ifndef __wcstoul_internal_defined
 501 extern unsigned long int __wcstoul_internal (__const wchar_t *__restrict __npt,
 502                                              wchar_t **__restrict __endptr,
 503                                              int __base, int __group) __THROW;
 504 # define __wcstoul_internal_defined     1
 505 #endif
 506 #ifndef __wcstoll_internal_defined
 507 __extension__
 508 extern long long int __wcstoll_internal (__const wchar_t *__restrict __nptr,
 509                                          wchar_t **__restrict __endptr,
 510                                          int __base, int __group) __THROW;
 511 # define __wcstoll_internal_defined     1
 512 #endif
 513 #ifndef __wcstoull_internal_defined
 514 __extension__
 515 extern unsigned long long int __wcstoull_internal (__const wchar_t *
 516                                                    __restrict __nptr,
 517                                                    wchar_t **
 518                                                    __restrict __endptr,
 519                                                    int __base,
 520                                                    int __group) __THROW;
 521 # define __wcstoull_internal_defined    1
 522 #endif
 523
 524
 525 #if defined __OPTIMIZE__ && __GNUC__ >= 2
 526 /* Define inline functions which call the internal entry points.  */
 527 __BEGIN_NAMESPACE_C99
 528
 529 extern __inline double
 530 __NTH (wcstod (__const wchar_t *__restrict __nptr,
 531                wchar_t **__restrict __endptr))
 532 { return __wcstod_internal (__nptr, __endptr, 0); }
 533 extern __inline long int
 534 __NTH (wcstol (__const wchar_t *__restrict __nptr,
 535                wchar_t **__restrict __endptr, int __base))
 536 { return __wcstol_internal (__nptr, __endptr, __base, 0); }
 537 extern __inline unsigned long int
 538 __NTH (wcstoul (__const wchar_t *__restrict __nptr,
 539                 wchar_t **__restrict __endptr, int __base))
 540 { return __wcstoul_internal (__nptr, __endptr, __base, 0); }
 541 __END_NAMESPACE_C99
 542
 543 # ifdef __USE_GNU
 544 extern __inline float
 545 __NTH (wcstof (__const wchar_t *__restrict __nptr,
 546                wchar_t **__restrict __endptr))
 547 { return __wcstof_internal (__nptr, __endptr, 0); }
 548 extern __inline long double
 549 __NTH (wcstold (__const wchar_t *__restrict __nptr,
 550                 wchar_t **__restrict __endptr))
 551 { return __wcstold_internal (__nptr, __endptr, 0); }
 552
 553
 554 __extension__
 555 extern __inline long long int
 556 __NTH (wcstoq (__const wchar_t *__restrict __nptr,
 557                wchar_t **__restrict __endptr, int __base))
 558 { return __wcstoll_internal (__nptr, __endptr, __base, 0); }
 559 __extension__
 560 extern __inline unsigned long long int
 561 __NTH (wcstouq (__const wchar_t *__restrict __nptr,
 562                 wchar_t **__restrict __endptr, int __base))
 563 { return __wcstoull_internal (__nptr, __endptr, __base, 0); }
 564 # endif /* Use GNU.  */
 565 #endif /* Optimizing GCC >=2.  */
 566
 567
 568 #ifdef  __USE_GNU
 569 /* Copy SRC to DEST, returning the address of the terminating L'\0' in
 570    DEST.  */
 571 extern wchar_t *wcpcpy (wchar_t *__dest, __const wchar_t *__src) __THROW;
 572
 573 /* Copy no more than N characters of SRC to DEST, returning the address of
 574    the last character written into DEST.  */
 575 extern wchar_t *wcpncpy (wchar_t *__dest, __const wchar_t *__src, size_t __n)
 576      __THROW;
 577 #endif  /* use GNU */
 578
 579
 580 /* Wide character I/O functions.  */
 581 #if defined __USE_ISOC99 || defined __USE_UNIX98
 582 __BEGIN_NAMESPACE_C99
 583
 584 /* Select orientation for stream.  */
 585 extern int fwide (__FILE *__fp, int __mode) __THROW;
 586
 587
 588 /* Write formatted output to STREAM.
 589
 590    This function is a possible cancellation point and therefore not
 591    marked with __THROW.  */
 592 extern int fwprintf (__FILE *__restrict __stream,
 593                      __const wchar_t *__restrict __format, ...)
 594      /* __attribute__ ((__format__ (__wprintf__, 2, 3))) */;
 595 /* Write formatted output to stdout.
 596
 597    This function is a possible cancellation point and therefore not
 598    marked with __THROW.  */
 599 extern int wprintf (__const wchar_t *__restrict __format, ...)
 600      /* __attribute__ ((__format__ (__wprintf__, 1, 2))) */;
 601 /* Write formatted output of at most N characters to S.  */
 602 extern int swprintf (wchar_t *__restrict __s, size_t __n,
 603                      __const wchar_t *__restrict __format, ...)
 604      __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 4))) */;
 605
 606 /* Write formatted output to S from argument list ARG.
 607
 608    This function is a possible cancellation point and therefore not
 609    marked with __THROW.  */
 610 extern int vfwprintf (__FILE *__restrict __s,
 611                       __const wchar_t *__restrict __format,
 612                       __gnuc_va_list __arg)
 613      /* __attribute__ ((__format__ (__wprintf__, 2, 0))) */;
 614 /* Write formatted output to stdout from argument list ARG.
 615
 616    This function is a possible cancellation point and therefore not
 617    marked with __THROW.  */
 618 extern int vwprintf (__const wchar_t *__restrict __format,
 619                      __gnuc_va_list __arg)
 620      /* __attribute__ ((__format__ (__wprintf__, 1, 0))) */;
 621 /* Write formatted output of at most N character to S from argument
 622    list ARG.  */
 623 extern int vswprintf (wchar_t *__restrict __s, size_t __n,
 624                       __const wchar_t *__restrict __format,
 625                       __gnuc_va_list __arg)
 626      __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */;
 627
 628
 629 /* Read formatted input from STREAM.
 630
 631    This function is a possible cancellation point and therefore not
 632    marked with __THROW.  */
 633 extern int fwscanf (__FILE *__restrict __stream,
 634                     __const wchar_t *__restrict __format, ...)
 635      /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
 636 /* Read formatted input from stdin.
 637
 638    This function is a possible cancellation point and therefore not
 639    marked with __THROW.  */
 640 extern int wscanf (__const wchar_t *__restrict __format, ...)
 641      /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;
 642 /* Read formatted input from S.  */
 643 extern int swscanf (__const wchar_t *__restrict __s,
 644                     __const wchar_t *__restrict __format, ...)
 645      __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
 646
 647 __END_NAMESPACE_C99
 648 #endif /* Use ISO C99 and Unix98. */
 649
 650 #ifdef __USE_ISOC99
 651 __BEGIN_NAMESPACE_C99
 652
 653 /* Read formatted input from S into argument list ARG.
 654
 655    This function is a possible cancellation point and therefore not
 656    marked with __THROW.  */
 657 extern int vfwscanf (__FILE *__restrict __s,
 658                      __const wchar_t *__restrict __format,
 659                      __gnuc_va_list __arg)
 660      /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
 661 /* Read formatted input from stdin into argument list ARG.
 662
 663    This function is a possible cancellation point and therefore not
 664    marked with __THROW.  */
 665 extern int vwscanf (__const wchar_t *__restrict __format,
 666                     __gnuc_va_list __arg)
 667      /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */;
 668 /* Read formatted input from S into argument list ARG.  */
 669 extern int vswscanf (__const wchar_t *__restrict __s,
 670                      __const wchar_t *__restrict __format,
 671                      __gnuc_va_list __arg)
 672      __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
 673
 674 __END_NAMESPACE_C99
 675 #endif /* Use ISO C99. */
 676
 677
 678 __BEGIN_NAMESPACE_C99
 679 /* Read a character from STREAM.
 680
 681    These functions are possible cancellation points and therefore not
 682    marked with __THROW.  */
 683 extern wint_t fgetwc (__FILE *__stream);
 684 extern wint_t getwc (__FILE *__stream);
 685
 686 /* Read a character from stdin.
 687
 688    This function is a possible cancellation point and therefore not
 689    marked with __THROW.  */
 690 extern wint_t getwchar (void);
 691
 692
 693 /* Write a character to STREAM.
 694
 695    These functions are possible cancellation points and therefore not
 696    marked with __THROW.  */
 697 extern wint_t fputwc (wchar_t __wc, __FILE *__stream);
 698 extern wint_t putwc (wchar_t __wc, __FILE *__stream);
 699
 700 /* Write a character to stdout.
 701
 702    This function is a possible cancellation points and therefore not
 703    marked with __THROW.  */
 704 extern wint_t putwchar (wchar_t __wc);
 705
 706
 707 /* Get a newline-terminated wide character string of finite length
 708    from STREAM.
 709
 710    This function is a possible cancellation points and therefore not
 711    marked with __THROW.  */
 712 extern wchar_t *fgetws (wchar_t *__restrict __ws, int __n,
 713                         __FILE *__restrict __stream);
 714
 715 /* Write a string to STREAM.
 716
 717    This function is a possible cancellation points and therefore not
 718    marked with __THROW.  */
 719 extern int fputws (__const wchar_t *__restrict __ws,
 720                    __FILE *__restrict __stream);
 721
 722
 723 /* Push a character back onto the input buffer of STREAM.
 724
 725    This function is a possible cancellation points and therefore not
 726    marked with __THROW.  */
 727 extern wint_t ungetwc (wint_t __wc, __FILE *__stream);
 728 __END_NAMESPACE_C99
 729
 730
 731 #ifdef __USE_GNU
 732 /* These are defined to be equivalent to the `char' functions defined
 733    in POSIX.1:1996.
 734
 735    These functions are not part of POSIX and therefore no official
 736    cancellation point.  But due to similarity with an POSIX interface
 737    or due to the implementation they are cancellation points and
 738    therefore not marked with __THROW.  */
 739 extern wint_t getwc_unlocked (__FILE *__stream);
 740 extern wint_t getwchar_unlocked (void);
 741
 742 /* This is the wide character version of a GNU extension.
 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 fgetwc_unlocked (__FILE *__stream);
 749
 750 /* Faster version when locking is not necessary.
 751
 752    This function is not part of POSIX and therefore no official
 753    cancellation point.  But due to similarity with an POSIX interface
 754    or due to the implementation it is a cancellation point and
 755    therefore not marked with __THROW.  */
 756 extern wint_t fputwc_unlocked (wchar_t __wc, __FILE *__stream);
 757
 758 /* These are defined to be equivalent to the `char' functions defined
 759    in POSIX.1:1996.
 760
 761    These functions are not part of POSIX and therefore no official
 762    cancellation point.  But due to similarity with an POSIX interface
 763    or due to the implementation they are cancellation points and
 764    therefore not marked with __THROW.  */
 765 extern wint_t putwc_unlocked (wchar_t __wc, __FILE *__stream);
 766 extern wint_t putwchar_unlocked (wchar_t __wc);
 767
 768
 769 /* This function does the same as `fgetws' but does not lock the stream.
 770
 771    This function is not part of POSIX and therefore no official
 772    cancellation point.  But due to similarity with an POSIX interface
 773    or due to the implementation it is a cancellation point and
 774    therefore not marked with __THROW.  */
 775 extern wchar_t *fgetws_unlocked (wchar_t *__restrict __ws, int __n,
 776                                  __FILE *__restrict __stream);
 777
 778 /* This function does the same as `fputws' but does not lock the stream.
 779
 780    This function is not part of POSIX and therefore no official
 781    cancellation point.  But due to similarity with an POSIX interface
 782    or due to the implementation it is a cancellation point and
 783    therefore not marked with __THROW.  */
 784 extern int fputws_unlocked (__const wchar_t *__restrict __ws,
 785                             __FILE *__restrict __stream);
 786 #endif
 787
 788
 789 __BEGIN_NAMESPACE_C99
 790 /* Format TP into S according to FORMAT.
 791    Write no more than MAXSIZE wide characters and return the number
 792    of wide characters written, or 0 if it would exceed MAXSIZE.  */
 793 extern size_t wcsftime (wchar_t *__restrict __s, size_t __maxsize,
 794                         __const wchar_t *__restrict __format,
 795                         __const struct tm *__restrict __tp) __THROW;
 796 __END_NAMESPACE_C99
 797
 798 # ifdef __USE_GNU
 799 # include <xlocale.h>
 800
 801 /* Similar to `wcsftime' but takes the information from
 802    the provided locale and not the global locale.  */
 803 extern size_t wcsftime_l (wchar_t *__restrict __s, size_t __maxsize,
 804                           __const wchar_t *__restrict __format,
 805                           __const struct tm *__restrict __tp,
 806                           __locale_t __loc) __THROW;
 807 # endif
 808
 809 /* The X/Open standard demands that most of the functions defined in
 810    the <wctype.h> header must also appear here.  This is probably
 811    because some X/Open members wrote their implementation before the
 812    ISO C standard was published and introduced the better solution.
 813    We have to provide these definitions for compliance reasons but we
 814    do this nonsense only if really necessary.  */
 815 #if defined __USE_UNIX98 && !defined __USE_GNU
 816 # define __need_iswxxx
 817 # include <wctype.h>
 818 #endif
 819
 820 __END_DECLS
 821
 822 #endif  /* _WCHAR_H defined */
 823
 824 #endif /* wchar.h  */