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
   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 2, 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 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING.  If not, write to the Free
  20 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  21 // USA.
  22
  23 // As a special exception, you may use this file as part of a free software
  24 // library without restriction.  Specifically, if other files instantiate
  25 // templates or use macros or inline functions from this file, or you compile
  26 // this file and link it with other files to produce an executable, this
  27 // file does not by itself cause the resulting executable to be covered by
  28 // the GNU General Public License.  This exception does not however
  29 // invalidate any other reasons why the executable file might be covered by
  30 // the GNU General Public License.
  31
  32 /** @file locale_facets.tcc
  33  *  This is an internal header file, included by other library headers.
  34  *  You should not attempt to use it directly.
  35  */
  36
  37 #ifndef _LOCALE_FACETS_TCC
  38 #define _LOCALE_FACETS_TCC 1
  39
  40 #pragma GCC system_header
  41
  42 _GLIBCXX_BEGIN_NAMESPACE(std)
  43
  44   // Routine to access a cache for the facet.  If the cache didn't
  45   // exist before, it gets constructed on the fly.
  46   template<typename _Facet>
  47     struct __use_cache
  48     {
  49       const _Facet*
  50       operator() (const locale& __loc) const;
  51     };
  52
  53   // Specializations.
  54   template<typename _CharT>
  55     struct __use_cache<__numpunct_cache<_CharT> >
  56     {
  57       const __numpunct_cache<_CharT>*
  58       operator() (const locale& __loc) const
  59       {
  60         const size_t __i = numpunct<_CharT>::id._M_id();
  61         const locale::facet** __caches = __loc._M_impl->_M_caches;
  62         if (!__caches[__i])
  63           {
  64             __numpunct_cache<_CharT>* __tmp = NULL;
  65             try
  66               {
  67                 __tmp = new __numpunct_cache<_CharT>;
  68                 __tmp->_M_cache(__loc);
  69               }
  70             catch(...)
  71               {
  72                 delete __tmp;
  73                 __throw_exception_again;
  74               }
  75             __loc._M_impl->_M_install_cache(__tmp, __i);
  76           }
  77         return static_cast<const __numpunct_cache<_CharT>*>(__caches[__i]);
  78       }
  79     };
  80
  81   template<typename _CharT>
  82     void
  83     __numpunct_cache<_CharT>::_M_cache(const locale& __loc)
  84     {
  85       _M_allocated = true;
  86
  87       const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc);
  88
  89       _M_grouping_size = __np.grouping().size();
  90       char* __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>(__np.grouping()[0]) > 0);
  95
  96       _M_truename_size = __np.truename().size();
  97       _CharT* __truename = new _CharT[_M_truename_size];
  98       __np.truename().copy(__truename, _M_truename_size);
  99       _M_truename = __truename;
 100
 101       _M_falsename_size = __np.falsename().size();
 102       _CharT* __falsename = new _CharT[_M_falsename_size];
 103       __np.falsename().copy(__falsename, _M_falsename_size);
 104       _M_falsename = __falsename;
 105
 106       _M_decimal_point = __np.decimal_point();
 107       _M_thousands_sep = __np.thousands_sep();
 108
 109       const ctype<_CharT>& __ct = use_facet<ctype<_CharT> >(__loc);
 110       __ct.widen(__num_base::_S_atoms_out,
 111                  __num_base::_S_atoms_out + __num_base::_S_oend, _M_atoms_out);
 112       __ct.widen(__num_base::_S_atoms_in,
 113                  __num_base::_S_atoms_in + __num_base::_S_iend, _M_atoms_in);
 114     }
 115
 116   // Used by both numeric and monetary facets.
 117   // Check to make sure that the __grouping_tmp string constructed in
 118   // money_get or num_get matches the canonical grouping for a given
 119   // locale.
 120   // __grouping_tmp is parsed L to R
 121   // 1,222,444 == __grouping_tmp of "\1\3\3"
 122   // __grouping is parsed R to L
 123   // 1,222,444 == __grouping of "\3" == "\3\3\3"
 124   bool
 125   __verify_grouping(const char* __grouping, size_t __grouping_size,
 126                     const string& __grouping_tmp);
 127
 128 _GLIBCXX_BEGIN_LDBL_NAMESPACE
 129
 130   template<typename _CharT, typename _InIter>
 131     _InIter
 132     num_get<_CharT, _InIter>::
 133     _M_extract_float(_InIter __beg, _InIter __end, ios_base& __io,
 134                      ios_base::iostate& __err, string& __xtrc) const
 135     {
 136       typedef char_traits<_CharT>                       __traits_type;
 137       typedef __numpunct_cache<_CharT>                  __cache_type;
 138       __use_cache<__cache_type> __uc;
 139       const locale& __loc = __io._M_getloc();
 140       const __cache_type* __lc = __uc(__loc);
 141       const _CharT* __lit = __lc->_M_atoms_in;
 142       char_type __c = char_type();
 143
 144       // True if __beg becomes equal to __end.
 145       bool __testeof = __beg == __end;
 146
 147       // First check for sign.
 148       if (!__testeof)
 149         {
 150           __c = *__beg;
 151           const bool __plus = __c == __lit[__num_base::_S_iplus];
 152           if ((__plus || __c == __lit[__num_base::_S_iminus])
 153               && !(__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
 154               && !(__c == __lc->_M_decimal_point))
 155             {
 156               __xtrc += __plus ? '+' : '-';
 157               if (++__beg != __end)
 158                 __c = *__beg;
 159               else
 160                 __testeof = true;
 161             }
 162         }
 163
 164       // Next, look for leading zeros.
 165       bool __found_mantissa = false;
 166       int __sep_pos = 0;
 167       while (!__testeof)
 168         {
 169           if ((__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
 170               || __c == __lc->_M_decimal_point)
 171             break;
 172           else if (__c == __lit[__num_base::_S_izero])
 173             {
 174               if (!__found_mantissa)
 175                 {
 176                   __xtrc += '0';
 177                   __found_mantissa = true;
 178                 }
 179               ++__sep_pos;
 180
 181               if (++__beg != __end)
 182                 __c = *__beg;
 183               else
 184                 __testeof = true;
 185             }
 186           else
 187             break;
 188         }
 189
 190       // Only need acceptable digits for floating point numbers.
 191       bool __found_dec = false;
 192       bool __found_sci = false;
 193       string __found_grouping;
 194       if (__lc->_M_use_grouping)
 195         __found_grouping.reserve(32);
 196       const char_type* __lit_zero = __lit + __num_base::_S_izero;
 197
 198       if (!__lc->_M_allocated)
 199         // "C" locale
 200         while (!__testeof)
 201           {
 202             const int __digit = _M_find(__lit_zero, 10, __c);
 203             if (__digit != -1)
 204               {
 205                 __xtrc += '0' + __digit;
 206                 __found_mantissa = true;
 207               }
 208             else if (__c == __lc->_M_decimal_point
 209                      && !__found_dec && !__found_sci)
 210               {
 211                 __xtrc += '.';
 212                 __found_dec = true;
 213               }
 214             else if ((__c == __lit[__num_base::_S_ie]
 215                       || __c == __lit[__num_base::_S_iE])
 216                      && !__found_sci && __found_mantissa)
 217               {
 218                 // Scientific notation.
 219                 __xtrc += 'e';
 220                 __found_sci = true;
 221
 222                 // Remove optional plus or minus sign, if they exist.
 223                 if (++__beg != __end)
 224                   {
 225                     __c = *__beg;
 226                     const bool __plus = __c == __lit[__num_base::_S_iplus];
 227                     if (__plus || __c == __lit[__num_base::_S_iminus])
 228                       __xtrc += __plus ? '+' : '-';
 229                     else
 230                       continue;
 231                   }
 232                 else
 233                   {
 234                     __testeof = true;
 235                     break;
 236                   }
 237               }
 238             else
 239               break;
 240
 241             if (++__beg != __end)
 242               __c = *__beg;
 243             else
 244               __testeof = true;
 245           }
 246       else
 247         while (!__testeof)
 248           {
 249             // According to 22.2.2.1.2, p8-9, first look for thousands_sep
 250             // and decimal_point.
 251             if (__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
 252               {
 253                 if (!__found_dec && !__found_sci)
 254                   {
 255                     // NB: Thousands separator at the beginning of a string
 256                     // is a no-no, as is two consecutive thousands separators.
 257                     if (__sep_pos)
 258                       {
 259                         __found_grouping += static_cast<char>(__sep_pos);
 260                         __sep_pos = 0;
 261                       }
 262                     else
 263                       {
 264                         // NB: __convert_to_v will not assign __v and will
 265                         // set the failbit.
 266                         __xtrc.clear();
 267                         break;
 268                       }
 269                   }
 270                 else
 271                   break;
 272               }
 273             else if (__c == __lc->_M_decimal_point)
 274               {
 275                 if (!__found_dec && !__found_sci)
 276                   {
 277                     // If no grouping chars are seen, no grouping check
 278                     // is applied. Therefore __found_grouping is adjusted
 279                     // only if decimal_point comes after some thousands_sep.
 280                     if (__found_grouping.size())
 281                       __found_grouping += static_cast<char>(__sep_pos);
 282                     __xtrc += '.';
 283                     __found_dec = true;
 284                   }
 285                 else
 286                   break;
 287               }
 288             else
 289               {
 290                 const char_type* __q =
 291                   __traits_type::find(__lit_zero, 10, __c);
 292                 if (__q)
 293                   {
 294                     __xtrc += '0' + (__q - __lit_zero);
 295                     __found_mantissa = true;
 296                     ++__sep_pos;
 297                   }
 298                 else if ((__c == __lit[__num_base::_S_ie]
 299                           || __c == __lit[__num_base::_S_iE])
 300                          && !__found_sci && __found_mantissa)
 301                   {
 302                     // Scientific notation.
 303                     if (__found_grouping.size() && !__found_dec)
 304                       __found_grouping += static_cast<char>(__sep_pos);
 305                     __xtrc += 'e';
 306                     __found_sci = true;
 307
 308                     // Remove optional plus or minus sign, if they exist.
 309                     if (++__beg != __end)
 310                       {
 311                         __c = *__beg;
 312                         const bool __plus = __c == __lit[__num_base::_S_iplus];
 313                         if ((__plus || __c == __lit[__num_base::_S_iminus])
 314                             && !(__lc->_M_use_grouping
 315                                  && __c == __lc->_M_thousands_sep)
 316                             && !(__c == __lc->_M_decimal_point))
 317                       __xtrc += __plus ? '+' : '-';
 318                         else
 319                           continue;
 320                       }
 321                     else
 322                       {
 323                         __testeof = true;
 324                         break;
 325                       }
 326                   }
 327                 else
 328                   break;
 329               }
 330
 331             if (++__beg != __end)
 332               __c = *__beg;
 333             else
 334               __testeof = true;
 335           }
 336
 337       // Digit grouping is checked. If grouping and found_grouping don't
 338       // match, then get very very upset, and set failbit.
 339       if (__found_grouping.size())
 340         {
 341           // Add the ending grouping if a decimal or 'e'/'E' wasn't found.
 342           if (!__found_dec && !__found_sci)
 343             __found_grouping += static_cast<char>(__sep_pos);
 344
 345           if (!std::__verify_grouping(__lc->_M_grouping,
 346                                       __lc->_M_grouping_size,
 347                                       __found_grouping))
 348             __err |= ios_base::failbit;
 349         }
 350
 351       // Finish up.
 352       if (__testeof)
 353         __err |= ios_base::eofbit;
 354       return __beg;
 355     }
 356
 357   template<typename _CharT, typename _InIter>
 358     template<typename _ValueT>
 359       _InIter
 360       num_get<_CharT, _InIter>::
 361       _M_extract_int(_InIter __beg, _InIter __end, ios_base& __io,
 362                      ios_base::iostate& __err, _ValueT& __v) const
 363       {
 364         typedef char_traits<_CharT>                          __traits_type;
 365         using __gnu_cxx::__add_unsigned;
 366         typedef typename __add_unsigned<_ValueT>::__type __unsigned_type;
 367         typedef __numpunct_cache<_CharT>                     __cache_type;
 368         __use_cache<__cache_type> __uc;
 369         const locale& __loc = __io._M_getloc();
 370         const __cache_type* __lc = __uc(__loc);
 371         const _CharT* __lit = __lc->_M_atoms_in;
 372         char_type __c = char_type();
 373
 374         // NB: Iff __basefield == 0, __base can change based on contents.
 375         const ios_base::fmtflags __basefield = __io.flags()
 376                                                & ios_base::basefield;
 377         const bool __oct = __basefield == ios_base::oct;
 378         int __base = __oct ? 8 : (__basefield == ios_base::hex ? 16 : 10);
 379
 380         // True if __beg becomes equal to __end.
 381         bool __testeof = __beg == __end;
 382
 383         // First check for sign.
 384         bool __negative = false;
 385         if (!__testeof)
 386           {
 387             __c = *__beg;
 388             if (__gnu_cxx::__numeric_traits<_ValueT>::__is_signed)
 389               __negative = __c == __lit[__num_base::_S_iminus];
 390             if ((__negative || __c == __lit[__num_base::_S_iplus])
 391                 && !(__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
 392                 && !(__c == __lc->_M_decimal_point))
 393               {
 394                 if (++__beg != __end)
 395                   __c = *__beg;
 396                 else
 397                   __testeof = true;
 398               }
 399           }
 400
 401         // Next, look for leading zeros and check required digits
 402         // for base formats.
 403         bool __found_zero = false;
 404         int __sep_pos = 0;
 405         while (!__testeof)
 406           {
 407             if ((__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
 408                 || __c == __lc->_M_decimal_point)
 409               break;
 410             else if (__c == __lit[__num_base::_S_izero]
 411                      && (!__found_zero || __base == 10))
 412               {
 413                 __found_zero = true;
 414                 ++__sep_pos;
 415                 if (__basefield == 0)
 416                   __base = 8;
 417                 if (__base == 8)
 418                   __sep_pos = 0;
 419               }
 420             else if (__found_zero
 421                      && (__c == __lit[__num_base::_S_ix]
 422                          || __c == __lit[__num_base::_S_iX]))
 423               {
 424                 if (__basefield == 0)
 425                   __base = 16;
 426                 if (__base == 16)
 427                   {
 428                     __found_zero = false;
 429                     __sep_pos = 0;
 430                   }
 431                 else
 432                   break;
 433               }
 434             else
 435               break;
 436
 437             if (++__beg != __end)
 438               {
 439                 __c = *__beg;
 440                 if (!__found_zero)
 441                   break;
 442               }
 443             else
 444               __testeof = true;
 445           }
 446
 447         // At this point, base is determined. If not hex, only allow
 448         // base digits as valid input.
 449         const size_t __len = (__base == 16 ? __num_base::_S_iend
 450                               - __num_base::_S_izero : __base);
 451
 452         // Extract.
 453         string __found_grouping;
 454         if (__lc->_M_use_grouping)
 455           __found_grouping.reserve(32);
 456         bool __testfail = false;
 457         const __unsigned_type __max = __negative
 458           ? -__gnu_cxx::__numeric_traits<_ValueT>::__min
 459           : __gnu_cxx::__numeric_traits<_ValueT>::__max;
 460         const __unsigned_type __smax = __max / __base;
 461         __unsigned_type __result = 0;
 462         int __digit = 0;
 463         const char_type* __lit_zero = __lit + __num_base::_S_izero;
 464
 465         if (!__lc->_M_allocated)
 466           // "C" locale
 467           while (!__testeof)
 468             {
 469               __digit = _M_find(__lit_zero, __len, __c);
 470               if (__digit == -1)
 471                 break;
 472
 473               if (__result > __smax)
 474                 __testfail = true;
 475               else
 476                 {
 477                   __result *= __base;
 478                   __testfail |= __result > __max - __digit;
 479                   __result += __digit;
 480                   ++__sep_pos;
 481                 }
 482
 483               if (++__beg != __end)
 484                 __c = *__beg;
 485               else
 486                 __testeof = true;
 487             }
 488         else
 489           while (!__testeof)
 490             {
 491               // According to 22.2.2.1.2, p8-9, first look for thousands_sep
 492               // and decimal_point.
 493               if (__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
 494                 {
 495                   // NB: Thousands separator at the beginning of a string
 496                   // is a no-no, as is two consecutive thousands separators.
 497                   if (__sep_pos)
 498                     {
 499                       __found_grouping += static_cast<char>(__sep_pos);
 500                       __sep_pos = 0;
 501                     }
 502                   else
 503                     {
 504                       __testfail = true;
 505                       break;
 506                     }
 507                 }
 508               else if (__c == __lc->_M_decimal_point)
 509                 break;
 510               else
 511                 {
 512                   const char_type* __q =
 513                     __traits_type::find(__lit_zero, __len, __c);
 514                   if (!__q)
 515                     break;
 516
 517                   __digit = __q - __lit_zero;
 518                   if (__digit > 15)
 519                     __digit -= 6;
 520                   if (__result > __smax)
 521                     __testfail = true;
 522                   else
 523                     {
 524                       __result *= __base;
 525                       __testfail |= __result > __max - __digit;
 526                       __result += __digit;
 527                       ++__sep_pos;
 528                     }
 529                 }
 530
 531               if (++__beg != __end)
 532                 __c = *__beg;
 533               else
 534                 __testeof = true;
 535             }
 536
 537         // Digit grouping is checked. If grouping and found_grouping don't
 538         // match, then get very very upset, and set failbit.
 539         if (__found_grouping.size())
 540           {
 541             // Add the ending grouping.
 542             __found_grouping += static_cast<char>(__sep_pos);
 543
 544             if (!std::__verify_grouping(__lc->_M_grouping,
 545                                         __lc->_M_grouping_size,
 546                                         __found_grouping))
 547               __err |= ios_base::failbit;
 548           }
 549
 550         if (!__testfail && (__sep_pos || __found_zero
 551                             || __found_grouping.size()))
 552           __v = __negative ? -__result : __result;
 553         else
 554           __err |= ios_base::failbit;
 555
 556         if (__testeof)
 557           __err |= ios_base::eofbit;
 558         return __beg;
 559       }
 560
 561   // _GLIBCXX_RESOLVE_LIB_DEFECTS
 562   // 17.  Bad bool parsing
 563   template<typename _CharT, typename _InIter>
 564     _InIter
 565     num_get<_CharT, _InIter>::
 566     do_get(iter_type __beg, iter_type __end, ios_base& __io,
 567            ios_base::iostate& __err, bool& __v) const
 568     {
 569       if (!(__io.flags() & ios_base::boolalpha))
 570         {
 571           // Parse bool values as long.
 572           // NB: We can't just call do_get(long) here, as it might
 573           // refer to a derived class.
 574           long __l = -1;
 575           __beg = _M_extract_int(__beg, __end, __io, __err, __l);
 576           if (__l == 0 || __l == 1)
 577             __v = bool(__l);
 578           else
 579             __err |= ios_base::failbit;
 580         }
 581       else
 582         {
 583           // Parse bool values as alphanumeric.
 584           typedef __numpunct_cache<_CharT>              __cache_type;
 585           __use_cache<__cache_type> __uc;
 586           const locale& __loc = __io._M_getloc();
 587           const __cache_type* __lc = __uc(__loc);
 588
 589           bool __testf = true;
 590           bool __testt = true;
 591           size_t __n;
 592           bool __testeof = __beg == __end;
 593           for (__n = 0; !__testeof; ++__n)
 594             {
 595               const char_type __c = *__beg;
 596
 597               if (__testf)
 598                 {
 599                   if (__n < __lc->_M_falsename_size)
 600                     __testf = __c == __lc->_M_falsename[__n];
 601                   else
 602                     break;
 603                 }
 604
 605               if (__testt)
 606                 {
 607                   if (__n < __lc->_M_truename_size)
 608                     __testt = __c == __lc->_M_truename[__n];
 609                   else
 610                     break;
 611                 }
 612
 613               if (!__testf && !__testt)
 614                 break;
 615
 616               if (++__beg == __end)
 617                 __testeof = true;
 618             }
 619           if (__testf && __n == __lc->_M_falsename_size)
 620             __v = false;
 621           else if (__testt && __n == __lc->_M_truename_size)
 622             __v = true;
 623           else
 624             __err |= ios_base::failbit;
 625
 626           if (__testeof)
 627             __err |= ios_base::eofbit;
 628         }
 629       return __beg;
 630     }
 631
 632   template<typename _CharT, typename _InIter>
 633     _InIter
 634     num_get<_CharT, _InIter>::
 635     do_get(iter_type __beg, iter_type __end, ios_base& __io,
 636            ios_base::iostate& __err, long& __v) const
 637     { return _M_extract_int(__beg, __end, __io, __err, __v); }
 638
 639   template<typename _CharT, typename _InIter>
 640     _InIter
 641     num_get<_CharT, _InIter>::
 642     do_get(iter_type __beg, iter_type __end, ios_base& __io,
 643            ios_base::iostate& __err, unsigned short& __v) const
 644     { return _M_extract_int(__beg, __end, __io, __err, __v); }
 645
 646   template<typename _CharT, typename _InIter>
 647     _InIter
 648     num_get<_CharT, _InIter>::
 649     do_get(iter_type __beg, iter_type __end, ios_base& __io,
 650            ios_base::iostate& __err, unsigned int& __v) const
 651     { return _M_extract_int(__beg, __end, __io, __err, __v); }
 652
 653   template<typename _CharT, typename _InIter>
 654     _InIter
 655     num_get<_CharT, _InIter>::
 656     do_get(iter_type __beg, iter_type __end, ios_base& __io,
 657            ios_base::iostate& __err, unsigned long& __v) const
 658     { return _M_extract_int(__beg, __end, __io, __err, __v); }
 659
 660 #ifdef _GLIBCXX_USE_LONG_LONG
 661   template<typename _CharT, typename _InIter>
 662     _InIter
 663     num_get<_CharT, _InIter>::
 664     do_get(iter_type __beg, iter_type __end, ios_base& __io,
 665            ios_base::iostate& __err, long long& __v) const
 666     { return _M_extract_int(__beg, __end, __io, __err, __v); }
 667
 668   template<typename _CharT, typename _InIter>
 669     _InIter
 670     num_get<_CharT, _InIter>::
 671     do_get(iter_type __beg, iter_type __end, ios_base& __io,
 672            ios_base::iostate& __err, unsigned long long& __v) const
 673     { return _M_extract_int(__beg, __end, __io, __err, __v); }
 674 #endif
 675
 676   template<typename _CharT, typename _InIter>
 677     _InIter
 678     num_get<_CharT, _InIter>::
 679     do_get(iter_type __beg, iter_type __end, ios_base& __io,
 680            ios_base::iostate& __err, float& __v) const
 681     {
 682       string __xtrc;
 683       __xtrc.reserve(32);
 684       __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
 685       std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_c_locale());
 686       return __beg;
 687     }
 688
 689   template<typename _CharT, typename _InIter>
 690     _InIter
 691     num_get<_CharT, _InIter>::
 692     do_get(iter_type __beg, iter_type __end, ios_base& __io,
 693            ios_base::iostate& __err, double& __v) const
 694     {
 695       string __xtrc;
 696       __xtrc.reserve(32);
 697       __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
 698       std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_c_locale());
 699       return __beg;
 700     }
 701
 702 #if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
 703   template<typename _CharT, typename _InIter>
 704     _InIter
 705     num_get<_CharT, _InIter>::
 706     __do_get(iter_type __beg, iter_type __end, ios_base& __io,
 707              ios_base::iostate& __err, double& __v) const
 708     {
 709       string __xtrc;
 710       __xtrc.reserve(32);
 711       __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
 712       std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_c_locale());
 713       return __beg;
 714     }
 715 #endif
 716
 717   template<typename _CharT, typename _InIter>
 718     _InIter
 719     num_get<_CharT, _InIter>::
 720     do_get(iter_type __beg, iter_type __end, ios_base& __io,
 721            ios_base::iostate& __err, long double& __v) const
 722     {
 723       string __xtrc;
 724       __xtrc.reserve(32);
 725       __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
 726       std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_c_locale());
 727       return __beg;
 728     }
 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, void*& __v) const
 735     {
 736       // Prepare for hex formatted input.
 737       typedef ios_base::fmtflags        fmtflags;
 738       const fmtflags __fmt = __io.flags();
 739       __io.flags((__fmt & ~ios_base::basefield) | ios_base::hex);
 740
 741       typedef __gnu_cxx::__conditional_type<(sizeof(void*)
 742                                              <= sizeof(unsigned long)),
 743         unsigned long, unsigned long long>::__type _UIntPtrType;
 744
 745       _UIntPtrType __ul;
 746       __beg = _M_extract_int(__beg, __end, __io, __err, __ul);
 747
 748       // Reset from hex formatted input.
 749       __io.flags(__fmt);
 750
 751       if (!(__err & ios_base::failbit))
 752         __v = reinterpret_cast<void*>(__ul);
 753       return __beg;
 754     }
 755
 756   // For use by integer and floating-point types after they have been
 757   // converted into a char_type string.
 758   template<typename _CharT, typename _OutIter>
 759     void
 760     num_put<_CharT, _OutIter>::
 761     _M_pad(_CharT __fill, streamsize __w, ios_base& __io,
 762            _CharT* __new, const _CharT* __cs, int& __len) const
 763     {
 764       // [22.2.2.2.2] Stage 3.
 765       // If necessary, pad.
 766       __pad<_CharT, char_traits<_CharT> >::_S_pad(__io, __fill, __new,
 767                                                   __cs, __w, __len);
 768       __len = static_cast<int>(__w);
 769     }
 770
 771 _GLIBCXX_END_LDBL_NAMESPACE
 772
 773   template<typename _CharT, typename _ValueT>
 774     int
 775     __int_to_char(_CharT* __bufend, _ValueT __v, const _CharT* __lit,
 776                   ios_base::fmtflags __flags, bool __dec)
 777     {
 778       _CharT* __buf = __bufend;
 779       if (__builtin_expect(__dec, true))
 780         {
 781           // Decimal.
 782           do
 783             {
 784               *--__buf = __lit[(__v % 10) + __num_base::_S_odigits];
 785               __v /= 10;
 786             }
 787           while (__v != 0);
 788         }
 789       else if ((__flags & ios_base::basefield) == ios_base::oct)
 790         {
 791           // Octal.
 792           do
 793             {
 794               *--__buf = __lit[(__v & 0x7) + __num_base::_S_odigits];
 795               __v >>= 3;
 796             }
 797           while (__v != 0);
 798         }
 799       else
 800         {
 801           // Hex.
 802           const bool __uppercase = __flags & ios_base::uppercase;
 803           const int __case_offset = __uppercase ? __num_base::_S_oudigits
 804                                                 : __num_base::_S_odigits;
 805           do
 806             {
 807               *--__buf = __lit[(__v & 0xf) + __case_offset];
 808               __v >>= 4;
 809             }
 810           while (__v != 0);
 811         }
 812       return __bufend - __buf;
 813     }
 814
 815 _GLIBCXX_BEGIN_LDBL_NAMESPACE
 816
 817   template<typename _CharT, typename _OutIter>
 818     void
 819     num_put<_CharT, _OutIter>::
 820     _M_group_int(const char* __grouping, size_t __grouping_size, _CharT __sep,
 821                  ios_base&, _CharT* __new, _CharT* __cs, int& __len) const
 822     {
 823       _CharT* __p = std::__add_grouping(__new, __sep, __grouping,
 824                                         __grouping_size, __cs, __cs + __len);
 825       __len = __p - __new;
 826     }
 827
 828   template<typename _CharT, typename _OutIter>
 829     template<typename _ValueT>
 830       _OutIter
 831       num_put<_CharT, _OutIter>::
 832       _M_insert_int(_OutIter __s, ios_base& __io, _CharT __fill,
 833                     _ValueT __v) const
 834       {
 835         using __gnu_cxx::__add_unsigned;
 836         typedef typename __add_unsigned<_ValueT>::__type __unsigned_type;
 837         typedef __numpunct_cache<_CharT>                     __cache_type;
 838         __use_cache<__cache_type> __uc;
 839         const locale& __loc = __io._M_getloc();
 840         const __cache_type* __lc = __uc(__loc);
 841         const _CharT* __lit = __lc->_M_atoms_out;
 842         const ios_base::fmtflags __flags = __io.flags();
 843
 844         // Long enough to hold hex, dec, and octal representations.
 845         const int __ilen = 5 * sizeof(_ValueT);
 846         _CharT* __cs = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
 847                                                              * __ilen));
 848
 849         // [22.2.2.2.2] Stage 1, numeric conversion to character.
 850         // Result is returned right-justified in the buffer.
 851         const ios_base::fmtflags __basefield = __flags & ios_base::basefield;
 852         const bool __dec = (__basefield != ios_base::oct
 853                             && __basefield != ios_base::hex);
 854         const __unsigned_type __u = ((__v > 0 || !__dec)
 855                                      ? __unsigned_type(__v)
 856                                      : -__unsigned_type(__v));
 857         int __len = __int_to_char(__cs + __ilen, __u, __lit, __flags, __dec);
 858         __cs += __ilen - __len;
 859
 860         // Add grouping, if necessary.
 861         if (__lc->_M_use_grouping)
 862           {
 863             // Grouping can add (almost) as many separators as the number
 864             // of digits + space is reserved for numeric base or sign.
 865             _CharT* __cs2 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
 866                                                                   * (__len + 1)
 867                                                                   * 2));
 868             _M_group_int(__lc->_M_grouping, __lc->_M_grouping_size,
 869                          __lc->_M_thousands_sep, __io, __cs2 + 2, __cs, __len);
 870             __cs = __cs2 + 2;
 871           }
 872
 873         // Complete Stage 1, prepend numeric base or sign.
 874         if (__builtin_expect(__dec, true))
 875           {
 876             // Decimal.
 877             if (__v >= 0)
 878               {
 879                 if (bool(__flags & ios_base::showpos)
 880                     && __gnu_cxx::__numeric_traits<_ValueT>::__is_signed)
 881                   *--__cs = __lit[__num_base::_S_oplus], ++__len;
 882               }
 883             else
 884               *--__cs = __lit[__num_base::_S_ominus], ++__len;
 885           }
 886         else if (bool(__flags & ios_base::showbase) && __v)
 887           {
 888             if (__basefield == ios_base::oct)
 889               *--__cs = __lit[__num_base::_S_odigits], ++__len;
 890             else
 891               {
 892                 // 'x' or 'X'
 893                 const bool __uppercase = __flags & ios_base::uppercase;
 894                 *--__cs = __lit[__num_base::_S_ox + __uppercase];
 895                 // '0'
 896                 *--__cs = __lit[__num_base::_S_odigits];
 897                 __len += 2;
 898               }
 899           }
 900
 901         // Pad.
 902         const streamsize __w = __io.width();
 903         if (__w > static_cast<streamsize>(__len))
 904           {
 905             _CharT* __cs3 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
 906                                                                   * __w));
 907             _M_pad(__fill, __w, __io, __cs3, __cs, __len);
 908             __cs = __cs3;
 909           }
 910         __io.width(0);
 911
 912         // [22.2.2.2.2] Stage 4.
 913         // Write resulting, fully-formatted string to output iterator.
 914         return std::__write(__s, __cs, __len);
 915       }
 916
 917   template<typename _CharT, typename _OutIter>
 918     void
 919     num_put<_CharT, _OutIter>::
 920     _M_group_float(const char* __grouping, size_t __grouping_size,
 921                    _CharT __sep, const _CharT* __p, _CharT* __new,
 922                    _CharT* __cs, int& __len) const
 923     {
 924       // _GLIBCXX_RESOLVE_LIB_DEFECTS
 925       // 282. What types does numpunct grouping refer to?
 926       // Add grouping, if necessary.
 927       const int __declen = __p ? __p - __cs : __len;
 928       _CharT* __p2 = std::__add_grouping(__new, __sep, __grouping,
 929                                          __grouping_size,
 930                                          __cs, __cs + __declen);
 931
 932       // Tack on decimal part.
 933       int __newlen = __p2 - __new;
 934       if (__p)
 935         {
 936           char_traits<_CharT>::copy(__p2, __p, __len - __declen);
 937           __newlen += __len - __declen;
 938         }
 939       __len = __newlen;
 940     }
 941
 942   // The following code uses vsnprintf (or vsprintf(), when
 943   // _GLIBCXX_USE_C99 is not defined) to convert floating point values
 944   // for insertion into a stream.  An optimization would be to replace
 945   // them with code that works directly on a wide buffer and then use
 946   // __pad to do the padding.  It would be good to replace them anyway
 947   // to gain back the efficiency that C++ provides by knowing up front
 948   // the type of the values to insert.  Also, sprintf is dangerous
 949   // since may lead to accidental buffer overruns.  This
 950   // implementation follows the C++ standard fairly directly as
 951   // outlined in 22.2.2.2 [lib.locale.num.put]
 952   template<typename _CharT, typename _OutIter>
 953     template<typename _ValueT>
 954       _OutIter
 955       num_put<_CharT, _OutIter>::
 956       _M_insert_float(_OutIter __s, ios_base& __io, _CharT __fill, char __mod,
 957                        _ValueT __v) const
 958       {
 959         typedef __numpunct_cache<_CharT>                __cache_type;
 960         __use_cache<__cache_type> __uc;
 961         const locale& __loc = __io._M_getloc();
 962         const __cache_type* __lc = __uc(__loc);
 963
 964         // Use default precision if out of range.
 965         const streamsize __prec = __io.precision() < 0 ? 6 : __io.precision();
 966
 967         const int __max_digits =
 968           __gnu_cxx::__numeric_traits<_ValueT>::__digits10;
 969
 970         // [22.2.2.2.2] Stage 1, numeric conversion to character.
 971         int __len;
 972         // Long enough for the max format spec.
 973         char __fbuf[16];
 974         __num_base::_S_format_float(__io, __fbuf, __mod);
 975
 976 #ifdef _GLIBCXX_USE_C99
 977         // First try a buffer perhaps big enough (most probably sufficient
 978         // for non-ios_base::fixed outputs)
 979         int __cs_size = __max_digits * 3;
 980         char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
 981         __len = std::__convert_from_v(_S_get_c_locale(), __cs, __cs_size,
 982                                       __fbuf, __prec, __v);
 983
 984         // If the buffer was not large enough, try again with the correct size.
 985         if (__len >= __cs_size)
 986           {
 987             __cs_size = __len + 1;
 988             __cs = static_cast<char*>(__builtin_alloca(__cs_size));
 989             __len = std::__convert_from_v(_S_get_c_locale(), __cs, __cs_size,
 990                                           __fbuf, __prec, __v);
 991           }
 992 #else
 993         // Consider the possibility of long ios_base::fixed outputs
 994         const bool __fixed = __io.flags() & ios_base::fixed;
 995         const int __max_exp =
 996           __gnu_cxx::__numeric_traits<_ValueT>::__max_exponent10;
 997
 998         // The size of the output string is computed as follows.
 999         // ios_base::fixed outputs may need up to __max_exp + 1 chars
1000         // for the integer part + __prec chars for the fractional part
1001         // + 3 chars for sign, decimal point, '\0'. On the other hand,
1002         // for non-fixed outputs __max_digits * 2 + __prec chars are
1003         // largely sufficient.
1004         const int __cs_size = __fixed ? __max_exp + __prec + 4
1005                                       : __max_digits * 2 + __prec;
1006         char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
1007         __len = std::__convert_from_v(_S_get_c_locale(), __cs, 0, __fbuf,
1008                                       __prec, __v);
1009 #endif
1010
1011         // [22.2.2.2.2] Stage 2, convert to char_type, using correct
1012         // numpunct.decimal_point() values for '.' and adding grouping.
1013         const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
1014
1015         _CharT* __ws = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
1016                                                              * __len));
1017         __ctype.widen(__cs, __cs + __len, __ws);
1018
1019         // Replace decimal point.
1020         _CharT* __wp = 0;
1021         const char* __p = char_traits<char>::find(__cs, __len, '.');
1022         if (__p)
1023           {
1024             __wp = __ws + (__p - __cs);
1025             *__wp = __lc->_M_decimal_point;
1026           }
1027
1028         // Add grouping, if necessary.
1029         // N.B. Make sure to not group things like 2e20, i.e., no decimal
1030         // point, scientific notation.
1031         if (__lc->_M_use_grouping
1032             && (__wp || __len < 3 || (__cs[1] <= '9' && __cs[2] <= '9'
1033                                       && __cs[1] >= '0' && __cs[2] >= '0')))
1034           {
1035             // Grouping can add (almost) as many separators as the
1036             // number of digits, but no more.
1037             _CharT* __ws2 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
1038                                                                   * __len * 2));
1039
1040             streamsize __off = 0;
1041             if (__cs[0] == '-' || __cs[0] == '+')
1042               {
1043                 __off = 1;
1044                 __ws2[0] = __ws[0];
1045                 __len -= 1;
1046               }
1047
1048             _M_group_float(__lc->_M_grouping, __lc->_M_grouping_size,
1049                            __lc->_M_thousands_sep, __wp, __ws2 + __off,
1050                            __ws + __off, __len);
1051             __len += __off;
1052
1053             __ws = __ws2;
1054           }
1055
1056         // Pad.
1057         const streamsize __w = __io.width();
1058         if (__w > static_cast<streamsize>(__len))
1059           {
1060             _CharT* __ws3 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
1061                                                                   * __w));
1062             _M_pad(__fill, __w, __io, __ws3, __ws, __len);
1063             __ws = __ws3;
1064           }
1065         __io.width(0);
1066
1067         // [22.2.2.2.2] Stage 4.
1068         // Write resulting, fully-formatted string to output iterator.
1069         return std::__write(__s, __ws, __len);
1070       }
1071
1072   template<typename _CharT, typename _OutIter>
1073     _OutIter
1074     num_put<_CharT, _OutIter>::
1075     do_put(iter_type __s, ios_base& __io, char_type __fill, bool __v) const
1076     {
1077       const ios_base::fmtflags __flags = __io.flags();
1078       if ((__flags & ios_base::boolalpha) == 0)
1079         {
1080           const long __l = __v;
1081           __s = _M_insert_int(__s, __io, __fill, __l);
1082         }
1083       else
1084         {
1085           typedef __numpunct_cache<_CharT>              __cache_type;
1086           __use_cache<__cache_type> __uc;
1087           const locale& __loc = __io._M_getloc();
1088           const __cache_type* __lc = __uc(__loc);
1089
1090           const _CharT* __name = __v ? __lc->_M_truename
1091                                      : __lc->_M_falsename;
1092           int __len = __v ? __lc->_M_truename_size
1093                           : __lc->_M_falsename_size;
1094
1095           const streamsize __w = __io.width();
1096           if (__w > static_cast<streamsize>(__len))
1097             {
1098               _CharT* __cs
1099                 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
1100                                                         * __w));
1101               _M_pad(__fill, __w, __io, __cs, __name, __len);
1102               __name = __cs;
1103             }
1104           __io.width(0);
1105           __s = std::__write(__s, __name, __len);
1106         }
1107       return __s;
1108     }
1109
1110   template<typename _CharT, typename _OutIter>
1111     _OutIter
1112     num_put<_CharT, _OutIter>::
1113     do_put(iter_type __s, ios_base& __io, char_type __fill, long __v) const
1114     { return _M_insert_int(__s, __io, __fill, __v); }
1115
1116   template<typename _CharT, typename _OutIter>
1117     _OutIter
1118     num_put<_CharT, _OutIter>::
1119     do_put(iter_type __s, ios_base& __io, char_type __fill,
1120            unsigned long __v) const
1121     { return _M_insert_int(__s, __io, __fill, __v); }
1122
1123 #ifdef _GLIBCXX_USE_LONG_LONG
1124   template<typename _CharT, typename _OutIter>
1125     _OutIter
1126     num_put<_CharT, _OutIter>::
1127     do_put(iter_type __s, ios_base& __io, char_type __fill, long long __v) const
1128     { return _M_insert_int(__s, __io, __fill, __v); }
1129
1130   template<typename _CharT, typename _OutIter>
1131     _OutIter
1132     num_put<_CharT, _OutIter>::
1133     do_put(iter_type __s, ios_base& __io, char_type __fill,
1134            unsigned long long __v) const
1135     { return _M_insert_int(__s, __io, __fill, __v); }
1136 #endif
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                                          | ios_base::internal);
1169       __io.flags((__flags & __fmt) | (ios_base::hex | ios_base::showbase));
1170
1171       typedef __gnu_cxx::__conditional_type<(sizeof(const void*)
1172                                              <= sizeof(unsigned long)),
1173         unsigned long, unsigned long long>::__type _UIntPtrType;
1174
1175       __s = _M_insert_int(__s, __io, __fill,
1176                           reinterpret_cast<_UIntPtrType>(__v));
1177       __io.flags(__flags);
1178       return __s;
1179     }
1180
1181 _GLIBCXX_END_LDBL_NAMESPACE
1182
1183   // Construct correctly padded string, as per 22.2.2.2.2
1184   // Assumes
1185   // __newlen > __oldlen
1186   // __news is allocated for __newlen size
1187
1188   // NB: Of the two parameters, _CharT can be deduced from the
1189   // function arguments. The other (_Traits) has to be explicitly specified.
1190   template<typename _CharT, typename _Traits>
1191     void
1192     __pad<_CharT, _Traits>::_S_pad(ios_base& __io, _CharT __fill,
1193                                    _CharT* __news, const _CharT* __olds,
1194                                    const streamsize __newlen,
1195                                    const streamsize __oldlen)
1196     {
1197       const size_t __plen = static_cast<size_t>(__newlen - __oldlen);
1198       const ios_base::fmtflags __adjust = __io.flags() & ios_base::adjustfield;
1199
1200       // Padding last.
1201       if (__adjust == ios_base::left)
1202         {
1203           _Traits::copy(__news, __olds, __oldlen);
1204           _Traits::assign(__news + __oldlen, __plen, __fill);
1205           return;
1206         }
1207
1208       size_t __mod = 0;
1209       if (__adjust == ios_base::internal)
1210         {
1211           // Pad after the sign, if there is one.
1212           // Pad after 0[xX], if there is one.
1213           // Who came up with these rules, anyway? Jeeze.
1214           const locale& __loc = __io._M_getloc();
1215           const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
1216
1217           if (__ctype.widen('-') == __olds[0]
1218               || __ctype.widen('+') == __olds[0])
1219             {
1220               __news[0] = __olds[0];
1221               __mod = 1;
1222               ++__news;
1223             }
1224           else if (__ctype.widen('0') == __olds[0]
1225                    && __oldlen > 1
1226                    && (__ctype.widen('x') == __olds[1]
1227                        || __ctype.widen('X') == __olds[1]))
1228             {
1229               __news[0] = __olds[0];
1230               __news[1] = __olds[1];
1231               __mod = 2;
1232               __news += 2;
1233             }
1234           // else Padding first.
1235         }
1236       _Traits::assign(__news, __plen, __fill);
1237       _Traits::copy(__news + __plen, __olds + __mod, __oldlen - __mod);
1238     }
1239
1240   template<typename _CharT>
1241     _CharT*
1242     __add_grouping(_CharT* __s, _CharT __sep,
1243                    const char* __gbeg, size_t __gsize,
1244                    const _CharT* __first, const _CharT* __last)
1245     {
1246       size_t __idx = 0;
1247       size_t __ctr = 0;
1248
1249       while (__last - __first > __gbeg[__idx]
1250              && static_cast<signed char>(__gbeg[__idx]) > 0)
1251         {
1252           __last -= __gbeg[__idx];
1253           __idx < __gsize - 1 ? ++__idx : ++__ctr;
1254         }
1255
1256       while (__first != __last)
1257         *__s++ = *__first++;
1258
1259       while (__ctr--)
1260         {
1261           *__s++ = __sep;
1262           for (char __i = __gbeg[__idx]; __i > 0; --__i)
1263             *__s++ = *__first++;
1264         }
1265
1266       while (__idx--)
1267         {
1268           *__s++ = __sep;
1269           for (char __i = __gbeg[__idx]; __i > 0; --__i)
1270             *__s++ = *__first++;
1271         }
1272
1273       return __s;
1274     }
1275
1276   // Inhibit implicit instantiations for required instantiations,
1277   // which are defined via explicit instantiations elsewhere.
1278   // NB: This syntax is a GNU extension.
1279 #if _GLIBCXX_EXTERN_TEMPLATE
1280   extern template class numpunct<char>;
1281   extern template class numpunct_byname<char>;
1282   extern template class _GLIBCXX_LDBL_NAMESPACE num_get<char>;
1283   extern template class _GLIBCXX_LDBL_NAMESPACE num_put<char>;
1284   extern template class ctype_byname<char>;
1285
1286   extern template
1287     const numpunct<char>&
1288     use_facet<numpunct<char> >(const locale&);
1289
1290   extern template
1291     const num_put<char>&
1292     use_facet<num_put<char> >(const locale&);
1293
1294   extern template
1295     const num_get<char>&
1296     use_facet<num_get<char> >(const locale&);
1297
1298   extern template
1299     bool
1300     has_facet<ctype<char> >(const locale&);
1301
1302   extern template
1303     bool
1304     has_facet<numpunct<char> >(const locale&);
1305
1306   extern template
1307     bool
1308     has_facet<num_put<char> >(const locale&);
1309
1310   extern template
1311     bool
1312     has_facet<num_get<char> >(const locale&);
1313
1314 #ifdef _GLIBCXX_USE_WCHAR_T
1315   extern template class numpunct<wchar_t>;
1316   extern template class numpunct_byname<wchar_t>;
1317   extern template class _GLIBCXX_LDBL_NAMESPACE num_get<wchar_t>;
1318   extern template class _GLIBCXX_LDBL_NAMESPACE num_put<wchar_t>;
1319   extern template class ctype_byname<wchar_t>;
1320
1321   extern template
1322     const numpunct<wchar_t>&
1323     use_facet<numpunct<wchar_t> >(const locale&);
1324
1325   extern template
1326     const num_put<wchar_t>&
1327     use_facet<num_put<wchar_t> >(const locale&);
1328
1329   extern template
1330     const num_get<wchar_t>&
1331     use_facet<num_get<wchar_t> >(const locale&);
1332
1333  extern template
1334     bool
1335     has_facet<ctype<wchar_t> >(const locale&);
1336
1337   extern template
1338     bool
1339     has_facet<numpunct<wchar_t> >(const locale&);
1340
1341   extern template
1342     bool
1343     has_facet<num_put<wchar_t> >(const locale&);
1344
1345   extern template
1346     bool
1347     has_facet<num_get<wchar_t> >(const locale&);
1348 #endif
1349 #endif
1350
1351 _GLIBCXX_END_NAMESPACE
1352
1353 #endif