wcsmbs/wchar.h

   1 /* Copyright (C) 1995-2004,2005,2006 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
 324 /* We can use the BTOWC and WCTOB optimizations since we know that all
 325    locales must use ASCII encoding for the values in the ASCII range
 326    and because the wchar_t encoding is always ISO 10646.  */
 327 extern wint_t __btowc_alias (int __c) __asm ("btowc");
 328 extern __inline wint_t
 329 __NTH (btowc (int __c))
 330 { return (__builtin_constant_p (__c) && __c >= '\0' && __c <= '\x7f'
 331           ? (wint_t) __c : __btowc_alias (__c)); }
 332
 333 extern int __wctob_alias (wint_t __c) __asm ("wctob");
 334 extern __inline int
 335 __NTH (wctob (wint_t __wc))
 336 { return (__builtin_constant_p (__wc) && __wc >= L'\0' && __wc <= L'\x7f'
 337           ? (int) __wc : __wctob_alias (__wc)); }
 338
 339 extern __inline size_t
 340 __NTH (mbrlen (__const char *__restrict __s, size_t __n,
 341                mbstate_t *__restrict __ps))
 342 { return (__ps != NULL
 343           ? mbrtowc (NULL, __s, __n, __ps) : __mbrlen (__s, __n, NULL)); }
 344 #endif
 345
 346 __BEGIN_NAMESPACE_C99
 347 /* Write wide character representation of multibyte character string
 348    SRC to DST.  */
 349 extern size_t mbsrtowcs (wchar_t *__restrict __dst,
 350                          __const char **__restrict __src, size_t __len,
 351                          mbstate_t *__restrict __ps) __THROW;
 352
 353 /* Write multibyte character representation of wide character string
 354    SRC to DST.  */
 355 extern size_t wcsrtombs (char *__restrict __dst,
 356                          __const wchar_t **__restrict __src, size_t __len,
 357                          mbstate_t *__restrict __ps) __THROW;
 358 __END_NAMESPACE_C99
 359
 360
 361 #ifdef  __USE_GNU
 362 /* Write wide character representation of at most NMC bytes of the
 363    multibyte character string SRC to DST.  */
 364 extern size_t mbsnrtowcs (wchar_t *__restrict __dst,
 365                           __const char **__restrict __src, size_t __nmc,
 366                           size_t __len, mbstate_t *__restrict __ps) __THROW;
 367
 368 /* Write multibyte character representation of at most NWC characters
 369    from the wide character string SRC to DST.  */
 370 extern size_t wcsnrtombs (char *__restrict __dst,
 371                           __const wchar_t **__restrict __src,
 372                           size_t __nwc, size_t __len,
 373                           mbstate_t *__restrict __ps) __THROW;
 374 #endif  /* use GNU */
 375
 376
 377 /* The following functions are extensions found in X/Open CAE.  */
 378 #ifdef __USE_XOPEN
 379 /* Determine number of column positions required for C.  */
 380 extern int wcwidth (wchar_t __c) __THROW;
 381
 382 /* Determine number of column positions required for first N wide
 383    characters (or fewer if S ends before this) in S.  */
 384 extern int wcswidth (__const wchar_t *__s, size_t __n) __THROW;
 385 #endif  /* Use X/Open.  */
 386
 387
 388 __BEGIN_NAMESPACE_C99
 389 /* Convert initial portion of the wide string NPTR to `double'
 390    representation.  */
 391 extern double wcstod (__const wchar_t *__restrict __nptr,
 392                       wchar_t **__restrict __endptr) __THROW;
 393
 394 #ifdef __USE_ISOC99
 395 /* Likewise for `float' and `long double' sizes of floating-point numbers.  */
 396 extern float wcstof (__const wchar_t *__restrict __nptr,
 397                      wchar_t **__restrict __endptr) __THROW;
 398 extern long double wcstold (__const wchar_t *__restrict __nptr,
 399                             wchar_t **__restrict __endptr) __THROW;
 400 #endif /* C99 */
 401
 402
 403 /* Convert initial portion of wide string NPTR to `long int'
 404    representation.  */
 405 extern long int wcstol (__const wchar_t *__restrict __nptr,
 406                         wchar_t **__restrict __endptr, int __base) __THROW;
 407
 408 /* Convert initial portion of wide string NPTR to `unsigned long int'
 409    representation.  */
 410 extern unsigned long int wcstoul (__const wchar_t *__restrict __nptr,
 411                                   wchar_t **__restrict __endptr, int __base)
 412      __THROW;
 413
 414 #if defined __USE_ISOC99 || (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 wcstoll (__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 wcstoull (__const wchar_t *__restrict __nptr,
 426                                         wchar_t **__restrict __endptr,
 427                                         int __base) __THROW;
 428 #endif /* ISO C99 or GCC and GNU.  */
 429 __END_NAMESPACE_C99
 430
 431 #if defined __GNUC__ && defined __USE_GNU
 432 /* Convert initial portion of wide string NPTR to `long int'
 433    representation.  */
 434 __extension__
 435 extern long long int wcstoq (__const wchar_t *__restrict __nptr,
 436                              wchar_t **__restrict __endptr, int __base)
 437      __THROW;
 438
 439 /* Convert initial portion of wide string NPTR to `unsigned long long int'
 440    representation.  */
 441 __extension__
 442 extern unsigned long long int wcstouq (__const wchar_t *__restrict __nptr,
 443                                        wchar_t **__restrict __endptr,
 444                                        int __base) __THROW;
 445 #endif /* GCC and use GNU.  */
 446
 447 #ifdef __USE_GNU
 448 /* The concept of one static locale per category is not very well
 449    thought out.  Many applications will need to process its data using
 450    information from several different locales.  Another application is
 451    the implementation of the internationalization handling in the
 452    upcoming ISO C++ standard library.  To support this another set of
 453    the functions using locale data exist which have an additional
 454    argument.
 455
 456    Attention: all these functions are *not* standardized in any form.
 457    This is a proof-of-concept implementation.  */
 458
 459 /* Structure for reentrant locale using functions.  This is an
 460    (almost) opaque type for the user level programs.  */
 461 # include <xlocale.h>
 462
 463 /* Special versions of the functions above which take the locale to
 464    use as an additional parameter.  */
 465 extern long int wcstol_l (__const wchar_t *__restrict __nptr,
 466                           wchar_t **__restrict __endptr, int __base,
 467                           __locale_t __loc) __THROW;
 468
 469 extern unsigned long int wcstoul_l (__const wchar_t *__restrict __nptr,
 470                                     wchar_t **__restrict __endptr,
 471                                     int __base, __locale_t __loc) __THROW;
 472
 473 __extension__
 474 extern long long int wcstoll_l (__const wchar_t *__restrict __nptr,
 475                                 wchar_t **__restrict __endptr,
 476                                 int __base, __locale_t __loc) __THROW;
 477
 478 __extension__
 479 extern unsigned long long int wcstoull_l (__const wchar_t *__restrict __nptr,
 480                                           wchar_t **__restrict __endptr,
 481                                           int __base, __locale_t __loc)
 482      __THROW;
 483
 484 extern double wcstod_l (__const wchar_t *__restrict __nptr,
 485                         wchar_t **__restrict __endptr, __locale_t __loc)
 486      __THROW;
 487
 488 extern float wcstof_l (__const wchar_t *__restrict __nptr,
 489                        wchar_t **__restrict __endptr, __locale_t __loc)
 490      __THROW;
 491
 492 extern long double wcstold_l (__const wchar_t *__restrict __nptr,
 493                               wchar_t **__restrict __endptr,
 494                               __locale_t __loc) __THROW;
 495 #endif /* GNU */
 496
 497
 498 /* The internal entry points for `wcstoX' take an extra flag argument
 499    saying whether or not to parse locale-dependent number grouping.  */
 500 extern double __wcstod_internal (__const wchar_t *__restrict __nptr,
 501                                  wchar_t **__restrict __endptr, int __group)
 502      __THROW;
 503 extern float __wcstof_internal (__const wchar_t *__restrict __nptr,
 504                                 wchar_t **__restrict __endptr, int __group)
 505      __THROW;
 506 extern long double __wcstold_internal (__const wchar_t *__restrict __nptr,
 507                                        wchar_t **__restrict __endptr,
 508                                        int __group) __THROW;
 509
 510 #ifndef __wcstol_internal_defined
 511 extern long int __wcstol_internal (__const wchar_t *__restrict __nptr,
 512                                    wchar_t **__restrict __endptr,
 513                                    int __base, int __group) __THROW;
 514 # define __wcstol_internal_defined      1
 515 #endif
 516 #ifndef __wcstoul_internal_defined
 517 extern unsigned long int __wcstoul_internal (__const wchar_t *__restrict __npt,
 518                                              wchar_t **__restrict __endptr,
 519                                              int __base, int __group) __THROW;
 520 # define __wcstoul_internal_defined     1
 521 #endif
 522 #ifndef __wcstoll_internal_defined
 523 __extension__
 524 extern long long int __wcstoll_internal (__const wchar_t *__restrict __nptr,
 525                                          wchar_t **__restrict __endptr,
 526                                          int __base, int __group) __THROW;
 527 # define __wcstoll_internal_defined     1
 528 #endif
 529 #ifndef __wcstoull_internal_defined
 530 __extension__
 531 extern unsigned long long int __wcstoull_internal (__const wchar_t *
 532                                                    __restrict __nptr,
 533                                                    wchar_t **
 534                                                    __restrict __endptr,
 535                                                    int __base,
 536                                                    int __group) __THROW;
 537 # define __wcstoull_internal_defined    1
 538 #endif
 539
 540
 541 #if defined __OPTIMIZE__ && __GNUC__ >= 2
 542 /* Define inline functions which call the internal entry points.  */
 543 __BEGIN_NAMESPACE_C99
 544
 545 extern __inline double
 546 __NTH (wcstod (__const wchar_t *__restrict __nptr,
 547                wchar_t **__restrict __endptr))
 548 { return __wcstod_internal (__nptr, __endptr, 0); }
 549 extern __inline long int
 550 __NTH (wcstol (__const wchar_t *__restrict __nptr,
 551                wchar_t **__restrict __endptr, int __base))
 552 { return __wcstol_internal (__nptr, __endptr, __base, 0); }
 553 extern __inline unsigned long int
 554 __NTH (wcstoul (__const wchar_t *__restrict __nptr,
 555                 wchar_t **__restrict __endptr, int __base))
 556 { return __wcstoul_internal (__nptr, __endptr, __base, 0); }
 557 __END_NAMESPACE_C99
 558
 559 # ifdef __USE_GNU
 560 extern __inline float
 561 __NTH (wcstof (__const wchar_t *__restrict __nptr,
 562                wchar_t **__restrict __endptr))
 563 { return __wcstof_internal (__nptr, __endptr, 0); }
 564 #  ifndef __LDBL_COMPAT
 565 extern __inline long double
 566 __NTH (wcstold (__const wchar_t *__restrict __nptr,
 567                 wchar_t **__restrict __endptr))
 568 { return __wcstold_internal (__nptr, __endptr, 0); }
 569 #  endif
 570 __extension__
 571 extern __inline long long int
 572 __NTH (wcstoq (__const wchar_t *__restrict __nptr,
 573                wchar_t **__restrict __endptr, int __base))
 574 { return __wcstoll_internal (__nptr, __endptr, __base, 0); }
 575 __extension__
 576 extern __inline unsigned long long int
 577 __NTH (wcstouq (__const wchar_t *__restrict __nptr,
 578                 wchar_t **__restrict __endptr, int __base))
 579 { return __wcstoull_internal (__nptr, __endptr, __base, 0); }
 580 # endif /* Use GNU.  */
 581 #endif /* Optimizing GCC >=2.  */
 582
 583
 584 #ifdef  __USE_GNU
 585 /* Copy SRC to DEST, returning the address of the terminating L'\0' in
 586    DEST.  */
 587 extern wchar_t *wcpcpy (wchar_t *__dest, __const wchar_t *__src) __THROW;
 588
 589 /* Copy no more than N characters of SRC to DEST, returning the address of
 590    the last character written into DEST.  */
 591 extern wchar_t *wcpncpy (wchar_t *__dest, __const wchar_t *__src, size_t __n)
 592      __THROW;
 593 #endif  /* use GNU */
 594
 595
 596 /* Wide character I/O functions.  */
 597 #if defined __USE_ISOC99 || defined __USE_UNIX98
 598 __BEGIN_NAMESPACE_C99
 599
 600 /* Select orientation for stream.  */
 601 extern int fwide (__FILE *__fp, int __mode) __THROW;
 602
 603
 604 /* Write formatted output to STREAM.
 605
 606    This function is a possible cancellation point and therefore not
 607    marked with __THROW.  */
 608 extern int fwprintf (__FILE *__restrict __stream,
 609                      __const wchar_t *__restrict __format, ...)
 610      /* __attribute__ ((__format__ (__wprintf__, 2, 3))) */;
 611 /* Write formatted output to stdout.
 612
 613    This function is a possible cancellation point and therefore not
 614    marked with __THROW.  */
 615 extern int wprintf (__const wchar_t *__restrict __format, ...)
 616      /* __attribute__ ((__format__ (__wprintf__, 1, 2))) */;
 617 /* Write formatted output of at most N characters to S.  */
 618 extern int swprintf (wchar_t *__restrict __s, size_t __n,
 619                      __const wchar_t *__restrict __format, ...)
 620      __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 4))) */;
 621
 622 /* Write formatted output to S from argument list ARG.
 623
 624    This function is a possible cancellation point and therefore not
 625    marked with __THROW.  */
 626 extern int vfwprintf (__FILE *__restrict __s,
 627                       __const wchar_t *__restrict __format,
 628                       __gnuc_va_list __arg)
 629      /* __attribute__ ((__format__ (__wprintf__, 2, 0))) */;
 630 /* Write formatted output to stdout from argument list ARG.
 631
 632    This function is a possible cancellation point and therefore not
 633    marked with __THROW.  */
 634 extern int vwprintf (__const wchar_t *__restrict __format,
 635                      __gnuc_va_list __arg)
 636      /* __attribute__ ((__format__ (__wprintf__, 1, 0))) */;
 637 /* Write formatted output of at most N character to S from argument
 638    list ARG.  */
 639 extern int vswprintf (wchar_t *__restrict __s, size_t __n,
 640                       __const wchar_t *__restrict __format,
 641                       __gnuc_va_list __arg)
 642      __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */;
 643
 644
 645 /* Read formatted input from STREAM.
 646
 647    This function is a possible cancellation point and therefore not
 648    marked with __THROW.  */
 649 extern int fwscanf (__FILE *__restrict __stream,
 650                     __const wchar_t *__restrict __format, ...)
 651      /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
 652 /* Read formatted input from stdin.
 653
 654    This function is a possible cancellation point and therefore not
 655    marked with __THROW.  */
 656 extern int wscanf (__const wchar_t *__restrict __format, ...)
 657      /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;
 658 /* Read formatted input from S.  */
 659 extern int swscanf (__const wchar_t *__restrict __s,
 660                     __const wchar_t *__restrict __format, ...)
 661      __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
 662
 663 __END_NAMESPACE_C99
 664 #endif /* Use ISO C99 and Unix98. */
 665
 666 #ifdef __USE_ISOC99
 667 __BEGIN_NAMESPACE_C99
 668
 669 /* Read formatted input from S into argument list ARG.
 670
 671    This function is a possible cancellation point and therefore not
 672    marked with __THROW.  */
 673 extern int vfwscanf (__FILE *__restrict __s,
 674                      __const wchar_t *__restrict __format,
 675                      __gnuc_va_list __arg)
 676      /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
 677 /* Read formatted input from stdin into argument list ARG.
 678
 679    This function is a possible cancellation point and therefore not
 680    marked with __THROW.  */
 681 extern int vwscanf (__const wchar_t *__restrict __format,
 682                     __gnuc_va_list __arg)
 683      /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */;
 684 /* Read formatted input from S into argument list ARG.  */
 685 extern int vswscanf (__const wchar_t *__restrict __s,
 686                      __const wchar_t *__restrict __format,
 687                      __gnuc_va_list __arg)
 688      __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
 689
 690 __END_NAMESPACE_C99
 691 #endif /* Use ISO C99. */
 692
 693
 694 __BEGIN_NAMESPACE_C99
 695 /* Read a character from STREAM.
 696
 697    These functions are possible cancellation points and therefore not
 698    marked with __THROW.  */
 699 extern wint_t fgetwc (__FILE *__stream);
 700 extern wint_t getwc (__FILE *__stream);
 701
 702 /* Read a character from stdin.
 703
 704    This function is a possible cancellation point and therefore not
 705    marked with __THROW.  */
 706 extern wint_t getwchar (void);
 707
 708
 709 /* Write a character to STREAM.
 710
 711    These functions are possible cancellation points and therefore not
 712    marked with __THROW.  */
 713 extern wint_t fputwc (wchar_t __wc, __FILE *__stream);
 714 extern wint_t putwc (wchar_t __wc, __FILE *__stream);
 715
 716 /* Write a character to stdout.
 717
 718    This function is a possible cancellation points and therefore not
 719    marked with __THROW.  */
 720 extern wint_t putwchar (wchar_t __wc);
 721
 722
 723 /* Get a newline-terminated wide character string of finite length
 724    from STREAM.
 725
 726    This function is a possible cancellation points and therefore not
 727    marked with __THROW.  */
 728 extern wchar_t *fgetws (wchar_t *__restrict __ws, int __n,
 729                         __FILE *__restrict __stream);
 730
 731 /* Write a string to STREAM.
 732
 733    This function is a possible cancellation points and therefore not
 734    marked with __THROW.  */
 735 extern int fputws (__const wchar_t *__restrict __ws,
 736                    __FILE *__restrict __stream);
 737
 738
 739 /* Push a character back onto the input buffer of STREAM.
 740
 741    This function is a possible cancellation points and therefore not
 742    marked with __THROW.  */
 743 extern wint_t ungetwc (wint_t __wc, __FILE *__stream);
 744 __END_NAMESPACE_C99
 745
 746
 747 #ifdef __USE_GNU
 748 /* These are defined to be equivalent to the `char' functions defined
 749    in POSIX.1:1996.
 750
 751    These functions are not part of POSIX and therefore no official
 752    cancellation point.  But due to similarity with an POSIX interface
 753    or due to the implementation they are cancellation points and
 754    therefore not marked with __THROW.  */
 755 extern wint_t getwc_unlocked (__FILE *__stream);
 756 extern wint_t getwchar_unlocked (void);
 757
 758 /* This is the wide character version of a GNU extension.
 759
 760    This function is not part of POSIX and therefore no official
 761    cancellation point.  But due to similarity with an POSIX interface
 762    or due to the implementation it is a cancellation point and
 763    therefore not marked with __THROW.  */
 764 extern wint_t fgetwc_unlocked (__FILE *__stream);
 765
 766 /* Faster version when locking is not necessary.
 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 wint_t fputwc_unlocked (wchar_t __wc, __FILE *__stream);
 773
 774 /* These are defined to be equivalent to the `char' functions defined
 775    in POSIX.1:1996.
 776
 777    These functions are 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 they are cancellation points and
 780    therefore not marked with __THROW.  */
 781 extern wint_t putwc_unlocked (wchar_t __wc, __FILE *__stream);
 782 extern wint_t putwchar_unlocked (wchar_t __wc);
 783
 784
 785 /* This function does the same as `fgetws' but does not lock the stream.
 786
 787    This function is not part of POSIX and therefore no official
 788    cancellation point.  But due to similarity with an POSIX interface
 789    or due to the implementation it is a cancellation point and
 790    therefore not marked with __THROW.  */
 791 extern wchar_t *fgetws_unlocked (wchar_t *__restrict __ws, int __n,
 792                                  __FILE *__restrict __stream);
 793
 794 /* This function does the same as `fputws' but does not lock the stream.
 795
 796    This function is not part of POSIX and therefore no official
 797    cancellation point.  But due to similarity with an POSIX interface
 798    or due to the implementation it is a cancellation point and
 799    therefore not marked with __THROW.  */
 800 extern int fputws_unlocked (__const wchar_t *__restrict __ws,
 801                             __FILE *__restrict __stream);
 802 #endif
 803
 804
 805 __BEGIN_NAMESPACE_C99
 806 /* Format TP into S according to FORMAT.
 807    Write no more than MAXSIZE wide characters and return the number
 808    of wide characters written, or 0 if it would exceed MAXSIZE.  */
 809 extern size_t wcsftime (wchar_t *__restrict __s, size_t __maxsize,
 810                         __const wchar_t *__restrict __format,
 811                         __const struct tm *__restrict __tp) __THROW;
 812 __END_NAMESPACE_C99
 813
 814 # ifdef __USE_GNU
 815 # include <xlocale.h>
 816
 817 /* Similar to `wcsftime' but takes the information from
 818    the provided locale and not the global locale.  */
 819 extern size_t wcsftime_l (wchar_t *__restrict __s, size_t __maxsize,
 820                           __const wchar_t *__restrict __format,
 821                           __const struct tm *__restrict __tp,
 822                           __locale_t __loc) __THROW;
 823 # endif
 824
 825 /* The X/Open standard demands that most of the functions defined in
 826    the <wctype.h> header must also appear here.  This is probably
 827    because some X/Open members wrote their implementation before the
 828    ISO C standard was published and introduced the better solution.
 829    We have to provide these definitions for compliance reasons but we
 830    do this nonsense only if really necessary.  */
 831 #if defined __USE_UNIX98 && !defined __USE_GNU
 832 # define __need_iswxxx
 833 # include <wctype.h>
 834 #endif
 835
 836 /* Define some macros helping to catch buffer overflows.  */
 837 #if __USE_FORTIFY_LEVEL > 0 && !defined __cplusplus
 838 # include <bits/wchar2.h>
 839 #endif
 840
 841 #ifdef __LDBL_COMPAT
 842 # include <bits/wchar-ldbl.h>
 843 #endif
 844
 845 __END_DECLS
 846
 847 #endif  /* _WCHAR_H defined */
 848
 849 #endif /* wchar.h  */