libstdc++-v3/include/bits/locale_facets.tcc

   1 // Locale support -*- C++ -*-
   2
   3 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
   4 // 2006, 2007, 2008, 2009, 2010
   5 // Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // Under Section 7 of GPL version 3, you are granted additional
  19 // permissions described in the GCC Runtime Library Exception, version
  20 // 3.1, as published by the Free Software Foundation.
  21
  22 // You should have received a copy of the GNU General Public License and
  23 // a copy of the GCC Runtime Library Exception along with this program;
  24 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  25 // <http://www.gnu.org/licenses/>.
  26
  27 /** @file bits/locale_facets.tcc
  28  *  This is an internal header file, included by other library headers.
  29  *  Do not attempt to use it directly. @headername{locale}
  30  */
  31
  32 #ifndef _LOCALE_FACETS_TCC
  33 #define _LOCALE_FACETS_TCC 1
  34
  35 #pragma GCC system_header
  36
  37 _GLIBCXX_BEGIN_NAMESPACE(std)
  38
  39   // Routine to access a cache for the facet.  If the cache didn't
  40   // exist before, it gets constructed on the fly.
  41   template<typename _Facet>
  42     struct __use_cache
  43     {
  44       const _Facet*
  45       operator() (const locale& __loc) const;
  46     };
  47
  48   // Specializations.
  49   template<typename _CharT>
  50     struct __use_cache<__numpunct_cache<_CharT> >
  51     {
  52       const __numpunct_cache<_CharT>*
  53       operator() (const locale& __loc) const
  54       {
  55         const size_t __i = numpunct<_CharT>::id._M_id();
  56         const locale::facet** __caches = __loc._M_impl->_M_caches;
  57         if (!__caches[__i])
  58           {
  59             __numpunct_cache<_CharT>* __tmp = 0;
  60             __try
  61               {
  62                 __tmp = new __numpunct_cache<_CharT>;
  63                 __tmp->_M_cache(__loc);
  64               }
  65             __catch(...)
  66               {
  67                 delete __tmp;
  68                 __throw_exception_again;
  69               }
  70             __loc._M_impl->_M_install_cache(__tmp, __i);
  71           }
  72         return static_cast<const __numpunct_cache<_CharT>*>(__caches[__i]);
  73       }
  74     };
  75
  76   template<typename _CharT>
  77     void
  78     __numpunct_cache<_CharT>::_M_cache(const locale& __loc)
  79     {
  80       _M_allocated = true;
  81
  82       const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc);
  83
  84       char* __grouping = 0;
  85       _CharT* __truename = 0;
  86       _CharT* __falsename = 0;
  87       __try
  88         {
  89           _M_grouping_size = __np.grouping().size();
  90           __grouping = new char[_M_grouping_size];
  91           __np.grouping().copy(__grouping, _M_grouping_size);
  92           _M_grouping = __grouping;
  93           _M_use_grouping = (_M_grouping_size
  94                              && static_cast<signed char>(_M_grouping[0]) > 0
  95                              && (_M_grouping[0]
  96                                  != __gnu_cxx::__numeric_traits<char>::__max));
  97
  98           _M_truename_size = __np.truename().size();
  99           __truename = new _CharT[_M_truename_size];
 100           __np.truename().copy(__truename, _M_truename_size);
 101           _M_truename = __truename;
 102
 103           _M_falsename_size = __np.falsename().size();
 104           __falsename = new _CharT[_M_falsename_size];
 105           __np.falsename().copy(__falsename, _M_falsename_size);
 106           _M_falsename = __falsename;
 107
 108           _M_decimal_point = __np.decimal_point();
 109           _M_thousands_sep = __np.thousands_sep();
 110
 111           const ctype<_CharT>& __ct = use_facet<ctype<_CharT> >(__loc);
 112           __ct.widen(__num_base::_S_atoms_out,
 113                      __num_base::_S_atoms_out
 114                      + __num_base::_S_oend, _M_atoms_out);
 115           __ct.widen(__num_base::_S_atoms_in,
 116                      __num_base::_S_atoms_in
 117                      + __num_base::_S_iend, _M_atoms_in);
 118         }
 119       __catch(...)
 120         {
 121           delete [] __grouping;
 122           delete [] __truename;
 123           delete [] __falsename;
 124           __throw_exception_again;
 125         }
 126     }
 127
 128   // Used by both numeric and monetary facets.
 129   // Check to make sure that the __grouping_tmp string constructed in
 130   // money_get or num_get matches the canonical grouping for a given
 131   // locale.
 132   // __grouping_tmp is parsed L to R
 133   // 1,222,444 == __grouping_tmp of "\1\3\3"
 134   // __grouping is parsed R to L
 135   // 1,222,444 == __grouping of "\3" == "\3\3\3"
 136   _GLIBCXX_PURE bool
 137   __verify_grouping(const char* __grouping, size_t __grouping_size,
 138                     const string& __grouping_tmp) throw ();
 139
 140 _GLIBCXX_BEGIN_LDBL_NAMESPACE
 141
 142   template<typename _CharT, typename _InIter>
 143     _InIter
 144     num_get<_CharT, _InIter>::
 145     _M_extract_float(_InIter __beg, _InIter __end, ios_base& __io,
 146                      ios_base::iostate& __err, string& __xtrc) const
 147     {
 148       typedef char_traits<_CharT>                       __traits_type;
 149       typedef __numpunct_cache<_CharT>                  __cache_type;
 150       __use_cache<__cache_type> __uc;
 151       const locale& __loc = __io._M_getloc();
 152       const __cache_type* __lc = __uc(__loc);
 153       const _CharT* __lit = __lc->_M_atoms_in;
 154       char_type __c = char_type();
 155
 156       // True if __beg becomes equal to __end.
 157       bool __testeof = __beg == __end;
 158
 159       // First check for sign.
 160       if (!__testeof)
 161         {
 162           __c = *__beg;
 163           const bool __plus = __c == __lit[__num_base::_S_iplus];
 164           if ((__plus || __c == __lit[__num_base::_S_iminus])
 165               && !(__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
 166               && !(__c == __lc->_M_decimal_point))
 167             {
 168               __xtrc += __plus ? '+' : '-';
 169               if (++__beg != __end)
 170                 __c = *__beg;
 171               else
 172                 __testeof = true;
 173             }
 174         }
 175
 176       // Next, look for leading zeros.
 177       bool __found_mantissa = false;
 178       int __sep_pos = 0;
 179       while (!__testeof)
 180         {
 181           if ((__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
 182               || __c == __lc->_M_decimal_point)
 183             break;
 184           else if (__c == __lit[__num_base::_S_izero])
 185             {
 186               if (!__found_mantissa)
 187                 {
 188                   __xtrc += '0';
 189                   __found_mantissa = true;
 190                 }
 191               ++__sep_pos;
 192
 193               if (++__beg != __end)
 194                 __c = *__beg;
 195               else
 196                 __testeof = true;
 197             }
 198           else
 199             break;
 200         }
 201
 202       // Only need acceptable digits for floating point numbers.
 203       bool __found_dec = false;
 204       bool __found_sci = false;
 205       string __found_grouping;
 206       if (__lc->_M_use_grouping)
 207         __found_grouping.reserve(32);
 208       const char_type* __lit_zero = __lit + __num_base::_S_izero;
 209
 210       if (!__lc->_M_allocated)
 211         // "C" locale
 212         while (!__testeof)
 213           {
 214             const int __digit = _M_find(__lit_zero, 10, __c);
 215             if (__digit != -1)
 216               {
 217                 __xtrc += '0' + __digit;
 218                 __found_mantissa = true;
 219               }
 220             else if (__c == __lc->_M_decimal_point
 221                      && !__found_dec && !__found_sci)
 222               {
 223                 __xtrc += '.';
 224                 __found_dec = true;
 225               }
 226             else if ((__c == __lit[__num_base::_S_ie]
 227                       || __c == __lit[__num_base::_S_iE])
 228                      && !__found_sci && __found_mantissa)
 229               {
 230                 // Scientific notation.
 231                 __xtrc += 'e';
 232                 __found_sci = true;
 233
 234                 // Remove optional plus or minus sign, if they exist.
 235                 if (++__beg != __end)
 236                   {
 237                     __c = *__beg;
 238                     const bool __plus = __c == __lit[__num_base::_S_iplus];
 239                     if (__plus || __c == __lit[__num_base::_S_iminus])
 240                       __xtrc += __plus ? '+' : '-';
 241                     else
 242                       continue;
 243                   }
 244                 else
 245                   {
 246                     __testeof = true;
 247                     break;
 248                   }
 249               }
 250             else
 251               break;
 252
 253             if (++__beg != __end)
 254               __c = *__beg;
 255             else
 256               __testeof = true;
 257           }
 258       else
 259         while (!__testeof)
 260           {
 261             // According to 22.2.2.1.2, p8-9, first look for thousands_sep
 262             // and decimal_point.
 263             if (__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
 264               {
 265                 if (!__found_dec && !__found_sci)
 266                   {
 267                     // NB: Thousands separator at the beginning of a string
 268                     // is a no-no, as is two consecutive thousands separators.
 269                     if (__sep_pos)
 270                       {
 271                         __found_grouping += static_cast<char>(__sep_pos);
 272                         __sep_pos = 0;
 273                       }
 274                     else
 275                       {
 276                         // NB: __convert_to_v will not assign __v and will
 277                         // set the failbit.
 278                         __xtrc.clear();
 279                         break;
 280                       }
 281                   }
 282                 else
 283                   break;
 284               }
 285             else if (__c == __lc->_M_decimal_point)
 286               {
 287                 if (!__found_dec && !__found_sci)
 288                   {
 289                     // If no grouping chars are seen, no grouping check
 290                     // is applied. Therefore __found_grouping is adjusted
 291                     // only if decimal_point comes after some thousands_sep.
 292                     if (__found_grouping.size())
 293                       __found_grouping += static_cast<char>(__sep_pos);
 294                     __xtrc += '.';
 295                     __found_dec = true;
 296                   }
 297                 else
 298                   break;
 299               }
 300             else
 301               {
 302                 const char_type* __q =
 303                   __traits_type::find(__lit_zero, 10, __c);
 304                 if (__q)
 305                   {
 306                     __xtrc += '0' + (__q - __lit_zero);
 307                     __found_mantissa = true;
 308                     ++__sep_pos;
 309                   }
 310                 else if ((__c == __lit[__num_base::_S_ie]
 311                           || __c == __lit[__num_base::_S_iE])
 312                          && !__found_sci && __found_mantissa)
 313                   {
 314                     // Scientific notation.
 315                     if (__found_grouping.size() && !__found_dec)
 316                       __found_grouping += static_cast<char>(__sep_pos);
 317                     __xtrc += 'e';
 318                     __found_sci = true;
 319
 320                     // Remove optional plus or minus sign, if they exist.
 321                     if (++__beg != __end)
 322                       {
 323                         __c = *__beg;
 324                         const bool __plus = __c == __lit[__num_base::_S_iplus];
 325                         if ((__plus || __c == __lit[__num_base::_S_iminus])
 326                             && !(__lc->_M_use_grouping
 327                                  && __c == __lc->_M_thousands_sep)
 328                             && !(__c == __lc->_M_decimal_point))
 329                       __xtrc += __plus ? '+' : '-';
 330                         else
 331                           continue;
 332                       }
 333                     else
 334                       {
 335                         __testeof = true;
 336                         break;
 337                       }
 338                   }
 339                 else
 340                   break;
 341               }
 342
 343             if (++__beg != __end)
 344               __c = *__beg;
 345             else
 346               __testeof = true;
 347           }
 348
 349       // Digit grouping is checked. If grouping and found_grouping don't
 350       // match, then get very very upset, and set failbit.
 351       if (__found_grouping.size())
 352         {
 353           // Add the ending grouping if a decimal or 'e'/'E' wasn't found.
 354           if (!__found_dec && !__found_sci)
 355             __found_grouping += static_cast<char>(__sep_pos);
 356
 357           if (!std::__verify_grouping(__lc->_M_grouping,
 358                                       __lc->_M_grouping_size,
 359                                       __found_grouping))
 360             __err = ios_base::failbit;
 361         }
 362
 363       return __beg;
 364     }
 365
 366   template<typename _CharT, typename _InIter>
 367     template<typename _ValueT>
 368       _InIter
 369       num_get<_CharT, _InIter>::
 370       _M_extract_int(_InIter __beg, _InIter __end, ios_base& __io,
 371                      ios_base::iostate& __err, _ValueT& __v) const
 372       {
 373         typedef char_traits<_CharT>                          __traits_type;
 374         using __gnu_cxx::__add_unsigned;
 375         typedef typename __add_unsigned<_ValueT>::__type __unsigned_type;
 376         typedef __numpunct_cache<_CharT>                     __cache_type;
 377         __use_cache<__cache_type> __uc;
 378         const locale& __loc = __io._M_getloc();
 379         const __cache_type* __lc = __uc(__loc);
 380         const _CharT* __lit = __lc->_M_atoms_in;
 381         char_type __c = char_type();
 382
 383         // NB: Iff __basefield == 0, __base can change based on contents.
 384         const ios_base::fmtflags __basefield = __io.flags()
 385                                                & ios_base::basefield;
 386         const bool __oct = __basefield == ios_base::oct;
 387         int __base = __oct ? 8 : (__basefield == ios_base::hex ? 16 : 10);
 388
 389         // True if __beg becomes equal to __end.
 390         bool __testeof = __beg == __end;
 391
 392         // First check for sign.
 393         bool __negative = false;
 394         if (!__testeof)
 395           {
 396             __c = *__beg;
 397             __negative = __c == __lit[__num_base::_S_iminus];
 398             if ((__negative || __c == __lit[__num_base::_S_iplus])
 399                 && !(__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
 400                 && !(__c == __lc->_M_decimal_point))
 401               {
 402                 if (++__beg != __end)
 403                   __c = *__beg;
 404                 else
 405                   __testeof = true;
 406               }
 407           }
 408
 409         // Next, look for leading zeros and check required digits
 410         // for base formats.
 411         bool __found_zero = false;
 412         int __sep_pos = 0;
 413         while (!__testeof)
 414           {
 415             if ((__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
 416                 || __c == __lc->_M_decimal_point)
 417               break;
 418             else if (__c == __lit[__num_base::_S_izero]
 419                      && (!__found_zero || __base == 10))
 420               {
 421                 __found_zero = true;
 422                 ++__sep_pos;
 423                 if (__basefield == 0)
 424                   __base = 8;
 425                 if (__base == 8)
 426                   __sep_pos = 0;
 427               }
 428             else if (__found_zero
 429                      && (__c == __lit[__num_base::_S_ix]
 430                          || __c == __lit[__num_base::_S_iX]))
 431               {
 432                 if (__basefield == 0)
 433                   __base = 16;
 434                 if (__base == 16)
 435                   {
 436                     __found_zero = false;
 437                     __sep_pos = 0;
 438                   }
 439                 else
 440                   break;
 441               }
 442             else
 443               break;
 444
 445             if (++__beg != __end)
 446               {
 447                 __c = *__beg;
 448                 if (!__found_zero)
 449                   break;
 450               }
 451             else
 452               __testeof = true;
 453           }
 454
 455         // At this point, base is determined. If not hex, only allow
 456         // base digits as valid input.
 457         const size_t __len = (__base == 16 ? __num_base::_S_iend
 458                               - __num_base::_S_izero : __base);
 459
 460         // Extract.
 461         string __found_grouping;
 462         if (__lc->_M_use_grouping)
 463           __found_grouping.reserve(32);
 464         bool __testfail = false;
 465         bool __testoverflow = false;
 466         const __unsigned_type __max =
 467           (__negative && __gnu_cxx::__numeric_traits<_ValueT>::__is_signed)
 468           ? -__gnu_cxx::__numeric_traits<_ValueT>::__min
 469           : __gnu_cxx::__numeric_traits<_ValueT>::__max;
 470         const __unsigned_type __smax = __max / __base;
 471         __unsigned_type __result = 0;
 472         int __digit = 0;
 473         const char_type* __lit_zero = __lit + __num_base::_S_izero;
 474
 475         if (!__lc->_M_allocated)
 476           // "C" locale
 477           while (!__testeof)
 478             {
 479               __digit = _M_find(__lit_zero, __len, __c);
 480               if (__digit == -1)
 481                 break;
 482
 483               if (__result > __smax)
 484                 __testoverflow = true;
 485               else
 486                 {
 487                   __result *= __base;
 488                   __testoverflow |= __result > __max - __digit;
 489                   __result += __digit;
 490                   ++__sep_pos;
 491                 }
 492
 493               if (++__beg != __end)
 494                 __c = *__beg;
 495               else
 496                 __testeof = true;
 497             }
 498         else
 499           while (!__testeof)
 500             {
 501               // According to 22.2.2.1.2, p8-9, first look for thousands_sep
 502               // and decimal_point.
 503               if (__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
 504                 {
 505                   // NB: Thousands separator at the beginning of a string
 506                   // is a no-no, as is two consecutive thousands separators.
 507                   if (__sep_pos)
 508                     {
 509                       __found_grouping += static_cast<char>(__sep_pos);
 510                       __sep_pos = 0;
 511                     }
 512                   else
 513                     {
 514                       __testfail = true;
 515                       break;
 516                     }
 517                 }
 518               else if (__c == __lc->_M_decimal_point)
 519                 break;
 520               else
 521                 {
 522                   const char_type* __q =
 523                     __traits_type::find(__lit_zero, __len, __c);
 524                   if (!__q)
 525                     break;
 526
 527                   __digit = __q - __lit_zero;
 528                   if (__digit > 15)
 529                     __digit -= 6;
 530                   if (__result > __smax)
 531                     __testoverflow = true;
 532                   else
 533                     {
 534                       __result *= __base;
 535                       __testoverflow |= __result > __max - __digit;
 536                       __result += __digit;
 537                       ++__sep_pos;
 538                     }
 539                 }
 540
 541               if (++__beg != __end)
 542                 __c = *__beg;
 543               else
 544                 __testeof = true;
 545             }
 546
 547         // Digit grouping is checked. If grouping and found_grouping don't
 548         // match, then get very very upset, and set failbit.
 549         if (__found_grouping.size())
 550           {
 551             // Add the ending grouping.
 552             __found_grouping += static_cast<char>(__sep_pos);
 553
 554             if (!std::__verify_grouping(__lc->_M_grouping,
 555                                         __lc->_M_grouping_size,
 556                                         __found_grouping))
 557               __err = ios_base::failbit;
 558           }
 559
 560         // _GLIBCXX_RESOLVE_LIB_DEFECTS
 561         // 23. Num_get overflow result.
 562         if ((!__sep_pos && !__found_zero && !__found_grouping.size())
 563             || __testfail)
 564           {
 565             __v = 0;
 566             __err = ios_base::failbit;
 567           }
 568         else if (__testoverflow)
 569           {
 570             if (__negative
 571                 && __gnu_cxx::__numeric_traits<_ValueT>::__is_signed)
 572               __v = __gnu_cxx::__numeric_traits<_ValueT>::__min;
 573             else
 574               __v = __gnu_cxx::__numeric_traits<_ValueT>::__max;
 575             __err = ios_base::failbit;
 576           }
 577         else
 578           __v = __negative ? -__result : __result;
 579
 580         if (__testeof)
 581           __err |= ios_base::eofbit;
 582         return __beg;
 583       }
 584
 585   // _GLIBCXX_RESOLVE_LIB_DEFECTS
 586   // 17.  Bad bool parsing
 587   template<typename _CharT, typename _InIter>
 588     _InIter
 589     num_get<_CharT, _InIter>::
 590     do_get(iter_type __beg, iter_type __end, ios_base& __io,
 591            ios_base::iostate& __err, bool& __v) const
 592     {
 593       if (!(__io.flags() & ios_base::boolalpha))
 594         {
 595           // Parse bool values as long.
 596           // NB: We can't just call do_get(long) here, as it might
 597           // refer to a derived class.
 598           long __l = -1;
 599           __beg = _M_extract_int(__beg, __end, __io, __err, __l);
 600           if (__l == 0 || __l == 1)
 601             __v = bool(__l);
 602           else
 603             {
 604               // _GLIBCXX_RESOLVE_LIB_DEFECTS
 605               // 23. Num_get overflow result.
 606               __v = true;
 607               __err = ios_base::failbit;
 608               if (__beg == __end)
 609                 __err |= ios_base::eofbit;
 610             }
 611         }
 612       else
 613         {
 614           // Parse bool values as alphanumeric.
 615           typedef __numpunct_cache<_CharT>  __cache_type;
 616           __use_cache<__cache_type> __uc;
 617           const locale& __loc = __io._M_getloc();
 618           const __cache_type* __lc = __uc(__loc);
 619
 620           bool __testf = true;
 621           bool __testt = true;
 622           bool __donef = __lc->_M_falsename_size == 0;
 623           bool __donet = __lc->_M_truename_size == 0;
 624           bool __testeof = false;
 625           size_t __n = 0;
 626           while (!__donef || !__donet)
 627             {
 628               if (__beg == __end)
 629                 {
 630                   __testeof = true;
 631                   break;
 632                 }
 633
 634               const char_type __c = *__beg;
 635
 636               if (!__donef)
 637                 __testf = __c == __lc->_M_falsename[__n];
 638
 639               if (!__testf && __donet)
 640                 break;
 641
 642               if (!__donet)
 643                 __testt = __c == __lc->_M_truename[__n];
 644
 645               if (!__testt && __donef)
 646                 break;
 647
 648               if (!__testt && !__testf)
 649                 break;
 650
 651               ++__n;
 652               ++__beg;
 653
 654               __donef = !__testf || __n >= __lc->_M_falsename_size;
 655               __donet = !__testt || __n >= __lc->_M_truename_size;
 656             }
 657           if (__testf && __n == __lc->_M_falsename_size && __n)
 658             {
 659               __v = false;
 660               if (__testt && __n == __lc->_M_truename_size)
 661                 __err = ios_base::failbit;
 662               else
 663                 __err = __testeof ? ios_base::eofbit : ios_base::goodbit;
 664             }
 665           else if (__testt && __n == __lc->_M_truename_size && __n)
 666             {
 667               __v = true;
 668               __err = __testeof ? ios_base::eofbit : ios_base::goodbit;
 669             }
 670           else
 671             {
 672               // _GLIBCXX_RESOLVE_LIB_DEFECTS
 673               // 23. Num_get overflow result.
 674               __v = false;
 675               __err = ios_base::failbit;
 676               if (__testeof)
 677                 __err |= ios_base::eofbit;
 678             }
 679         }
 680       return __beg;
 681     }
 682
 683   template<typename _CharT, typename _InIter>
 684     _InIter
 685     num_get<_CharT, _InIter>::
 686     do_get(iter_type __beg, iter_type __end, ios_base& __io,
 687            ios_base::iostate& __err, float& __v) const
 688     {
 689       string __xtrc;
 690       __xtrc.reserve(32);
 691       __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
 692       std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_c_locale());
 693       if (__beg == __end)
 694         __err |= ios_base::eofbit;
 695       return __beg;
 696     }
 697
 698   template<typename _CharT, typename _InIter>
 699     _InIter
 700     num_get<_CharT, _InIter>::
 701     do_get(iter_type __beg, iter_type __end, ios_base& __io,
 702            ios_base::iostate& __err, double& __v) const
 703     {
 704       string __xtrc;
 705       __xtrc.reserve(32);
 706       __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
 707       std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_c_locale());
 708       if (__beg == __end)
 709         __err |= ios_base::eofbit;
 710       return __beg;
 711     }
 712
 713 #if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
 714   template<typename _CharT, typename _InIter>
 715     _InIter
 716     num_get<_CharT, _InIter>::
 717     __do_get(iter_type __beg, iter_type __end, ios_base& __io,
 718              ios_base::iostate& __err, double& __v) const
 719     {
 720       string __xtrc;
 721       __xtrc.reserve(32);
 722       __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
 723       std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_c_locale());
 724       if (__beg == __end)
 725         __err |= ios_base::eofbit;
 726       return __beg;
 727     }
 728 #endif
 729
 730   template<typename _CharT, typename _InIter>
 731     _InIter
 732     num_get<_CharT, _InIter>::
 733     do_get(iter_type __beg, iter_type __end, ios_base& __io,
 734            ios_base::iostate& __err, long double& __v) const
 735     {
 736       string __xtrc;
 737       __xtrc.reserve(32);
 738       __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
 739       std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_c_locale());
 740       if (__beg == __end)
 741         __err |= ios_base::eofbit;
 742       return __beg;
 743     }
 744
 745   template<typename _CharT, typename _InIter>
 746     _InIter
 747     num_get<_CharT, _InIter>::
 748     do_get(iter_type __beg, iter_type __end, ios_base& __io,
 749            ios_base::iostate& __err, void*& __v) const
 750     {
 751       // Prepare for hex formatted input.
 752       typedef ios_base::fmtflags        fmtflags;
 753       const fmtflags __fmt = __io.flags();
 754       __io.flags((__fmt & ~ios_base::basefield) | ios_base::hex);
 755
 756       typedef __gnu_cxx::__conditional_type<(sizeof(void*)
 757                                              <= sizeof(unsigned long)),
 758         unsigned long, unsigned long long>::__type _UIntPtrType;
 759
 760       _UIntPtrType __ul;
 761       __beg = _M_extract_int(__beg, __end, __io, __err, __ul);
 762
 763       // Reset from hex formatted input.
 764       __io.flags(__fmt);
 765
 766       __v = reinterpret_cast<void*>(__ul);
 767       return __beg;
 768     }
 769
 770   // For use by integer and floating-point types after they have been
 771   // converted into a char_type string.
 772   template<typename _CharT, typename _OutIter>
 773     void
 774     num_put<_CharT, _OutIter>::
 775     _M_pad(_CharT __fill, streamsize __w, ios_base& __io,
 776            _CharT* __new, const _CharT* __cs, int& __len) const
 777     {
 778       // [22.2.2.2.2] Stage 3.
 779       // If necessary, pad.
 780       __pad<_CharT, char_traits<_CharT> >::_S_pad(__io, __fill, __new,
 781                                                   __cs, __w, __len);
 782       __len = static_cast<int>(__w);
 783     }
 784
 785 _GLIBCXX_END_LDBL_NAMESPACE
 786
 787   template<typename _CharT, typename _ValueT>
 788     int
 789     __int_to_char(_CharT* __bufend, _ValueT __v, const _CharT* __lit,
 790                   ios_base::fmtflags __flags, bool __dec)
 791     {
 792       _CharT* __buf = __bufend;
 793       if (__builtin_expect(__dec, true))
 794         {
 795           // Decimal.
 796           do
 797             {
 798               *--__buf = __lit[(__v % 10) + __num_base::_S_odigits];
 799               __v /= 10;
 800             }
 801           while (__v != 0);
 802         }
 803       else if ((__flags & ios_base::basefield) == ios_base::oct)
 804         {
 805           // Octal.
 806           do
 807             {
 808               *--__buf = __lit[(__v & 0x7) + __num_base::_S_odigits];
 809               __v >>= 3;
 810             }
 811           while (__v != 0);
 812         }
 813       else
 814         {
 815           // Hex.
 816           const bool __uppercase = __flags & ios_base::uppercase;
 817           const int __case_offset = __uppercase ? __num_base::_S_oudigits
 818                                                 : __num_base::_S_odigits;
 819           do
 820             {
 821               *--__buf = __lit[(__v & 0xf) + __case_offset];
 822               __v >>= 4;
 823             }
 824           while (__v != 0);
 825         }
 826       return __bufend - __buf;
 827     }
 828
 829 _GLIBCXX_BEGIN_LDBL_NAMESPACE
 830
 831   template<typename _CharT, typename _OutIter>
 832     void
 833     num_put<_CharT, _OutIter>::
 834     _M_group_int(const char* __grouping, size_t __grouping_size, _CharT __sep,
 835                  ios_base&, _CharT* __new, _CharT* __cs, int& __len) const
 836     {
 837       _CharT* __p = std::__add_grouping(__new, __sep, __grouping,
 838                                         __grouping_size, __cs, __cs + __len);
 839       __len = __p - __new;
 840     }
 841
 842   template<typename _CharT, typename _OutIter>
 843     template<typename _ValueT>
 844       _OutIter
 845       num_put<_CharT, _OutIter>::
 846       _M_insert_int(_OutIter __s, ios_base& __io, _CharT __fill,
 847                     _ValueT __v) const
 848       {
 849         using __gnu_cxx::__add_unsigned;
 850         typedef typename __add_unsigned<_ValueT>::__type __unsigned_type;
 851         typedef __numpunct_cache<_CharT>                     __cache_type;
 852         __use_cache<__cache_type> __uc;
 853         const locale& __loc = __io._M_getloc();
 854         const __cache_type* __lc = __uc(__loc);
 855         const _CharT* __lit = __lc->_M_atoms_out;
 856         const ios_base::fmtflags __flags = __io.flags();
 857
 858         // Long enough to hold hex, dec, and octal representations.
 859         const int __ilen = 5 * sizeof(_ValueT);
 860         _CharT* __cs = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
 861                                                              * __ilen));
 862
 863         // [22.2.2.2.2] Stage 1, numeric conversion to character.
 864         // Result is returned right-justified in the buffer.
 865         const ios_base::fmtflags __basefield = __flags & ios_base::basefield;
 866         const bool __dec = (__basefield != ios_base::oct
 867                             && __basefield != ios_base::hex);
 868         const __unsigned_type __u = ((__v > 0 || !__dec)
 869                                      ? __unsigned_type(__v)
 870                                      : -__unsigned_type(__v));
 871         int __len = __int_to_char(__cs + __ilen, __u, __lit, __flags, __dec);
 872         __cs += __ilen - __len;
 873
 874         // Add grouping, if necessary.
 875         if (__lc->_M_use_grouping)
 876           {
 877             // Grouping can add (almost) as many separators as the number
 878             // of digits + space is reserved for numeric base or sign.
 879             _CharT* __cs2 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
 880                                                                   * (__len + 1)
 881                                                                   * 2));
 882             _M_group_int(__lc->_M_grouping, __lc->_M_grouping_size,
 883                          __lc->_M_thousands_sep, __io, __cs2 + 2, __cs, __len);
 884             __cs = __cs2 + 2;
 885           }
 886
 887         // Complete Stage 1, prepend numeric base or sign.
 888         if (__builtin_expect(__dec, true))
 889           {
 890             // Decimal.
 891             if (__v >= 0)
 892               {
 893                 if (bool(__flags & ios_base::showpos)
 894                     && __gnu_cxx::__numeric_traits<_ValueT>::__is_signed)
 895                   *--__cs = __lit[__num_base::_S_oplus], ++__len;
 896               }
 897             else
 898               *--__cs = __lit[__num_base::_S_ominus], ++__len;
 899           }
 900         else if (bool(__flags & ios_base::showbase) && __v)
 901           {
 902             if (__basefield == ios_base::oct)
 903               *--__cs = __lit[__num_base::_S_odigits], ++__len;
 904             else
 905               {
 906                 // 'x' or 'X'
 907                 const bool __uppercase = __flags & ios_base::uppercase;
 908                 *--__cs = __lit[__num_base::_S_ox + __uppercase];
 909                 // '0'
 910                 *--__cs = __lit[__num_base::_S_odigits];
 911                 __len += 2;
 912               }
 913           }
 914
 915         // Pad.
 916         const streamsize __w = __io.width();
 917         if (__w > static_cast<streamsize>(__len))
 918           {
 919             _CharT* __cs3 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
 920                                                                   * __w));
 921             _M_pad(__fill, __w, __io, __cs3, __cs, __len);
 922             __cs = __cs3;
 923           }
 924         __io.width(0);
 925
 926         // [22.2.2.2.2] Stage 4.
 927         // Write resulting, fully-formatted string to output iterator.
 928         return std::__write(__s, __cs, __len);
 929       }
 930
 931   template<typename _CharT, typename _OutIter>
 932     void
 933     num_put<_CharT, _OutIter>::
 934     _M_group_float(const char* __grouping, size_t __grouping_size,
 935                    _CharT __sep, const _CharT* __p, _CharT* __new,
 936                    _CharT* __cs, int& __len) const
 937     {
 938       // _GLIBCXX_RESOLVE_LIB_DEFECTS
 939       // 282. What types does numpunct grouping refer to?
 940       // Add grouping, if necessary.
 941       const int __declen = __p ? __p - __cs : __len;
 942       _CharT* __p2 = std::__add_grouping(__new, __sep, __grouping,
 943                                          __grouping_size,
 944                                          __cs, __cs + __declen);
 945
 946       // Tack on decimal part.
 947       int __newlen = __p2 - __new;
 948       if (__p)
 949         {
 950           char_traits<_CharT>::copy(__p2, __p, __len - __declen);
 951           __newlen += __len - __declen;
 952         }
 953       __len = __newlen;
 954     }
 955
 956   // The following code uses vsnprintf (or vsprintf(), when
 957   // _GLIBCXX_USE_C99 is not defined) to convert floating point values
 958   // for insertion into a stream.  An optimization would be to replace
 959   // them with code that works directly on a wide buffer and then use
 960   // __pad to do the padding.  It would be good to replace them anyway
 961   // to gain back the efficiency that C++ provides by knowing up front
 962   // the type of the values to insert.  Also, sprintf is dangerous
 963   // since may lead to accidental buffer overruns.  This
 964   // implementation follows the C++ standard fairly directly as
 965   // outlined in 22.2.2.2 [lib.locale.num.put]
 966   template<typename _CharT, typename _OutIter>
 967     template<typename _ValueT>
 968       _OutIter
 969       num_put<_CharT, _OutIter>::
 970       _M_insert_float(_OutIter __s, ios_base& __io, _CharT __fill, char __mod,
 971                        _ValueT __v) const
 972       {
 973         typedef __numpunct_cache<_CharT>                __cache_type;
 974         __use_cache<__cache_type> __uc;
 975         const locale& __loc = __io._M_getloc();
 976         const __cache_type* __lc = __uc(__loc);
 977
 978         // Use default precision if out of range.
 979         const streamsize __prec = __io.precision() < 0 ? 6 : __io.precision();
 980
 981         const int __max_digits =
 982           __gnu_cxx::__numeric_traits<_ValueT>::__digits10;
 983
 984         // [22.2.2.2.2] Stage 1, numeric conversion to character.
 985         int __len;
 986         // Long enough for the max format spec.
 987         char __fbuf[16];
 988         __num_base::_S_format_float(__io, __fbuf, __mod);
 989
 990 #ifdef _GLIBCXX_USE_C99
 991         // First try a buffer perhaps big enough (most probably sufficient
 992         // for non-ios_base::fixed outputs)
 993         int __cs_size = __max_digits * 3;
 994         char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
 995         __len = std::__convert_from_v(_S_get_c_locale(), __cs, __cs_size,
 996                                       __fbuf, __prec, __v);
 997
 998         // If the buffer was not large enough, try again with the correct size.
 999         if (__len >= __cs_size)
1000           {
1001             __cs_size = __len + 1;
1002             __cs = static_cast<char*>(__builtin_alloca(__cs_size));
1003             __len = std::__convert_from_v(_S_get_c_locale(), __cs, __cs_size,
1004                                           __fbuf, __prec, __v);
1005           }
1006 #else
1007         // Consider the possibility of long ios_base::fixed outputs
1008         const bool __fixed = __io.flags() & ios_base::fixed;
1009         const int __max_exp =
1010           __gnu_cxx::__numeric_traits<_ValueT>::__max_exponent10;
1011
1012         // The size of the output string is computed as follows.
1013         // ios_base::fixed outputs may need up to __max_exp + 1 chars
1014         // for the integer part + __prec chars for the fractional part
1015         // + 3 chars for sign, decimal point, '\0'. On the other hand,
1016         // for non-fixed outputs __max_digits * 2 + __prec chars are
1017         // largely sufficient.
1018         const int __cs_size = __fixed ? __max_exp + __prec + 4
1019                                       : __max_digits * 2 + __prec;
1020         char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
1021         __len = std::__convert_from_v(_S_get_c_locale(), __cs, 0, __fbuf,
1022                                       __prec, __v);
1023 #endif
1024
1025         // [22.2.2.2.2] Stage 2, convert to char_type, using correct
1026         // numpunct.decimal_point() values for '.' and adding grouping.
1027         const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
1028
1029         _CharT* __ws = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
1030                                                              * __len));
1031         __ctype.widen(__cs, __cs + __len, __ws);
1032
1033         // Replace decimal point.
1034         _CharT* __wp = 0;
1035         const char* __p = char_traits<char>::find(__cs, __len, '.');
1036         if (__p)
1037           {
1038             __wp = __ws + (__p - __cs);
1039             *__wp = __lc->_M_decimal_point;
1040           }
1041
1042         // Add grouping, if necessary.
1043         // N.B. Make sure to not group things like 2e20, i.e., no decimal
1044         // point, scientific notation.
1045         if (__lc->_M_use_grouping
1046             && (__wp || __len < 3 || (__cs[1] <= '9' && __cs[2] <= '9'
1047                                       && __cs[1] >= '0' && __cs[2] >= '0')))
1048           {
1049             // Grouping can add (almost) as many separators as the
1050             // number of digits, but no more.
1051             _CharT* __ws2 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
1052                                                                   * __len * 2));
1053
1054             streamsize __off = 0;
1055             if (__cs[0] == '-' || __cs[0] == '+')
1056               {
1057                 __off = 1;
1058                 __ws2[0] = __ws[0];
1059                 __len -= 1;
1060               }
1061
1062             _M_group_float(__lc->_M_grouping, __lc->_M_grouping_size,
1063                            __lc->_M_thousands_sep, __wp, __ws2 + __off,
1064                            __ws + __off, __len);
1065             __len += __off;
1066
1067             __ws = __ws2;
1068           }
1069
1070         // Pad.
1071         const streamsize __w = __io.width();
1072         if (__w > static_cast<streamsize>(__len))
1073           {
1074             _CharT* __ws3 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
1075                                                                   * __w));
1076             _M_pad(__fill, __w, __io, __ws3, __ws, __len);
1077             __ws = __ws3;
1078           }
1079         __io.width(0);
1080
1081         // [22.2.2.2.2] Stage 4.
1082         // Write resulting, fully-formatted string to output iterator.
1083         return std::__write(__s, __ws, __len);
1084       }
1085
1086   template<typename _CharT, typename _OutIter>
1087     _OutIter
1088     num_put<_CharT, _OutIter>::
1089     do_put(iter_type __s, ios_base& __io, char_type __fill, bool __v) const
1090     {
1091       const ios_base::fmtflags __flags = __io.flags();
1092       if ((__flags & ios_base::boolalpha) == 0)
1093         {
1094           const long __l = __v;
1095           __s = _M_insert_int(__s, __io, __fill, __l);
1096         }
1097       else
1098         {
1099           typedef __numpunct_cache<_CharT>              __cache_type;
1100           __use_cache<__cache_type> __uc;
1101           const locale& __loc = __io._M_getloc();
1102           const __cache_type* __lc = __uc(__loc);
1103
1104           const _CharT* __name = __v ? __lc->_M_truename
1105                                      : __lc->_M_falsename;
1106           int __len = __v ? __lc->_M_truename_size
1107                           : __lc->_M_falsename_size;
1108
1109           const streamsize __w = __io.width();
1110           if (__w > static_cast<streamsize>(__len))
1111             {
1112               const streamsize __plen = __w - __len;
1113               _CharT* __ps
1114                 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
1115                                                         * __plen));
1116
1117               char_traits<_CharT>::assign(__ps, __plen, __fill);
1118               __io.width(0);
1119
1120               if ((__flags & ios_base::adjustfield) == ios_base::left)
1121                 {
1122                   __s = std::__write(__s, __name, __len);
1123                   __s = std::__write(__s, __ps, __plen);
1124                 }
1125               else
1126                 {
1127                   __s = std::__write(__s, __ps, __plen);
1128                   __s = std::__write(__s, __name, __len);
1129                 }
1130               return __s;
1131             }
1132           __io.width(0);
1133           __s = std::__write(__s, __name, __len);
1134         }
1135       return __s;
1136     }
1137
1138   template<typename _CharT, typename _OutIter>
1139     _OutIter
1140     num_put<_CharT, _OutIter>::
1141     do_put(iter_type __s, ios_base& __io, char_type __fill, double __v) const
1142     { return _M_insert_float(__s, __io, __fill, char(), __v); }
1143
1144 #if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
1145   template<typename _CharT, typename _OutIter>
1146     _OutIter
1147     num_put<_CharT, _OutIter>::
1148     __do_put(iter_type __s, ios_base& __io, char_type __fill, double __v) const
1149     { return _M_insert_float(__s, __io, __fill, char(), __v); }
1150 #endif
1151
1152   template<typename _CharT, typename _OutIter>
1153     _OutIter
1154     num_put<_CharT, _OutIter>::
1155     do_put(iter_type __s, ios_base& __io, char_type __fill,
1156            long double __v) const
1157     { return _M_insert_float(__s, __io, __fill, 'L', __v); }
1158
1159   template<typename _CharT, typename _OutIter>
1160     _OutIter
1161     num_put<_CharT, _OutIter>::
1162     do_put(iter_type __s, ios_base& __io, char_type __fill,
1163            const void* __v) const
1164     {
1165       const ios_base::fmtflags __flags = __io.flags();
1166       const ios_base::fmtflags __fmt = ~(ios_base::basefield
1167                                          | ios_base::uppercase);
1168       __io.flags((__flags & __fmt) | (ios_base::hex | ios_base::showbase));
1169
1170       typedef __gnu_cxx::__conditional_type<(sizeof(const void*)
1171                                              <= sizeof(unsigned long)),
1172         unsigned long, unsigned long long>::__type _UIntPtrType;
1173
1174       __s = _M_insert_int(__s, __io, __fill,
1175                           reinterpret_cast<_UIntPtrType>(__v));
1176       __io.flags(__flags);
1177       return __s;
1178     }
1179
1180 _GLIBCXX_END_LDBL_NAMESPACE
1181
1182   // Construct correctly padded string, as per 22.2.2.2.2
1183   // Assumes
1184   // __newlen > __oldlen
1185   // __news is allocated for __newlen size
1186
1187   // NB: Of the two parameters, _CharT can be deduced from the
1188   // function arguments. The other (_Traits) has to be explicitly specified.
1189   template<typename _CharT, typename _Traits>
1190     void
1191     __pad<_CharT, _Traits>::_S_pad(ios_base& __io, _CharT __fill,
1192                                    _CharT* __news, const _CharT* __olds,
1193                                    streamsize __newlen, streamsize __oldlen)
1194     {
1195       const size_t __plen = static_cast<size_t>(__newlen - __oldlen);
1196       const ios_base::fmtflags __adjust = __io.flags() & ios_base::adjustfield;
1197
1198       // Padding last.
1199       if (__adjust == ios_base::left)
1200         {
1201           _Traits::copy(__news, __olds, __oldlen);
1202           _Traits::assign(__news + __oldlen, __plen, __fill);
1203           return;
1204         }
1205
1206       size_t __mod = 0;
1207       if (__adjust == ios_base::internal)
1208         {
1209           // Pad after the sign, if there is one.
1210           // Pad after 0[xX], if there is one.
1211           // Who came up with these rules, anyway? Jeeze.
1212           const locale& __loc = __io._M_getloc();
1213           const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
1214
1215           if (__ctype.widen('-') == __olds[0]
1216               || __ctype.widen('+') == __olds[0])
1217             {
1218               __news[0] = __olds[0];
1219               __mod = 1;
1220               ++__news;
1221             }
1222           else if (__ctype.widen('0') == __olds[0]
1223                    && __oldlen > 1
1224                    && (__ctype.widen('x') == __olds[1]
1225                        || __ctype.widen('X') == __olds[1]))
1226             {
1227               __news[0] = __olds[0];
1228               __news[1] = __olds[1];
1229               __mod = 2;
1230               __news += 2;
1231             }
1232           // else Padding first.
1233         }
1234       _Traits::assign(__news, __plen, __fill);
1235       _Traits::copy(__news + __plen, __olds + __mod, __oldlen - __mod);
1236     }
1237
1238   template<typename _CharT>
1239     _CharT*
1240     __add_grouping(_CharT* __s, _CharT __sep,
1241                    const char* __gbeg, size_t __gsize,
1242                    const _CharT* __first, const _CharT* __last)
1243     {
1244       size_t __idx = 0;
1245       size_t __ctr = 0;
1246
1247       while (__last - __first > __gbeg[__idx]
1248              && static_cast<signed char>(__gbeg[__idx]) > 0
1249              && __gbeg[__idx] != __gnu_cxx::__numeric_traits<char>::__max)
1250         {
1251           __last -= __gbeg[__idx];
1252           __idx < __gsize - 1 ? ++__idx : ++__ctr;
1253         }
1254
1255       while (__first != __last)
1256         *__s++ = *__first++;
1257
1258       while (__ctr--)
1259         {
1260           *__s++ = __sep;
1261           for (char __i = __gbeg[__idx]; __i > 0; --__i)
1262             *__s++ = *__first++;
1263         }
1264
1265       while (__idx--)
1266         {
1267           *__s++ = __sep;
1268           for (char __i = __gbeg[__idx]; __i > 0; --__i)
1269             *__s++ = *__first++;
1270         }
1271
1272       return __s;
1273     }
1274
1275   // Inhibit implicit instantiations for required instantiations,
1276   // which are defined via explicit instantiations elsewhere.
1277   // NB: This syntax is a GNU extension.
1278 #if _GLIBCXX_EXTERN_TEMPLATE
1279   extern template class numpunct<char>;
1280   extern template class numpunct_byname<char>;
1281   extern template class _GLIBCXX_LDBL_NAMESPACE num_get<char>;
1282   extern template class _GLIBCXX_LDBL_NAMESPACE num_put<char>;
1283   extern template class ctype_byname<char>;
1284
1285   extern template
1286     const ctype<char>&
1287     use_facet<ctype<char> >(const locale&);
1288
1289   extern template
1290     const numpunct<char>&
1291     use_facet<numpunct<char> >(const locale&);
1292
1293   extern template
1294     const num_put<char>&
1295     use_facet<num_put<char> >(const locale&);
1296
1297   extern template
1298     const num_get<char>&
1299     use_facet<num_get<char> >(const locale&);
1300
1301   extern template
1302     bool
1303     has_facet<ctype<char> >(const locale&);
1304
1305   extern template
1306     bool
1307     has_facet<numpunct<char> >(const locale&);
1308
1309   extern template
1310     bool
1311     has_facet<num_put<char> >(const locale&);
1312
1313   extern template
1314     bool
1315     has_facet<num_get<char> >(const locale&);
1316
1317 #ifdef _GLIBCXX_USE_WCHAR_T
1318   extern template class numpunct<wchar_t>;
1319   extern template class numpunct_byname<wchar_t>;
1320   extern template class _GLIBCXX_LDBL_NAMESPACE num_get<wchar_t>;
1321   extern template class _GLIBCXX_LDBL_NAMESPACE num_put<wchar_t>;
1322   extern template class ctype_byname<wchar_t>;
1323
1324   extern template
1325     const ctype<wchar_t>&
1326     use_facet<ctype<wchar_t> >(const locale&);
1327
1328   extern template
1329     const numpunct<wchar_t>&
1330     use_facet<numpunct<wchar_t> >(const locale&);
1331
1332   extern template
1333     const num_put<wchar_t>&
1334     use_facet<num_put<wchar_t> >(const locale&);
1335
1336   extern template
1337     const num_get<wchar_t>&
1338     use_facet<num_get<wchar_t> >(const locale&);
1339
1340  extern template
1341     bool
1342     has_facet<ctype<wchar_t> >(const locale&);
1343
1344   extern template
1345     bool
1346     has_facet<numpunct<wchar_t> >(const locale&);
1347
1348   extern template
1349     bool
1350     has_facet<num_put<wchar_t> >(const locale&);
1351
1352   extern template
1353     bool
1354     has_facet<num_get<wchar_t> >(const locale&);
1355 #endif
1356 #endif
1357
1358 _GLIBCXX_END_NAMESPACE
1359
1360 #endif