// Locale support -*- C++ -*-

// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
// Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING.  If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.

// As a special exception, you may use this file as part of a free software
// library without restriction.  Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License.  This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.

// Warning: this file is not meant for user inclusion. Use <locale>.

#ifndef _CPP_BITS_LOCFACETS_TCC
#define _CPP_BITS_LOCFACETS_TCC 1

#pragma GCC system_header

#include <cerrno>
#include <clocale>   // For localeconv
#include <cstdlib>   // For strof, strtold
#include <cmath>     // For ceil
#include <cctype>    // For isspace
#include <limits>    // For numeric_limits
#include <bits/streambuf_iterator.h>
#include <typeinfo>  // For bad_cast.

namespace std
{
  template<typename _Facet>
    locale
    locale::combine(const locale& __other) const
    {
      _Impl* __tmp = new _Impl(*_M_impl, 1);
      __tmp->_M_replace_facet(__other._M_impl, &_Facet::id);
      return locale(__tmp);
    }

  template<typename _CharT, typename _Traits, typename _Alloc>
    bool
    locale::operator()(const basic_string<_CharT, _Traits, _Alloc>& __s1,
                       const basic_string<_CharT, _Traits, _Alloc>& __s2) const
    {
      typedef std::collate<_CharT> __collate_type;
      const __collate_type& __collate = use_facet<__collate_type>(*this);
      return (__collate.compare(__s1.data(), __s1.data() + __s1.length(),
                                __s2.data(), __s2.data() + __s2.length()) < 0);
    }

  template<typename _Facet>
    const _Facet&
    use_facet(const locale& __loc)
    {
      size_t __i = _Facet::id._M_id();
      locale::facet** __facets = __loc._M_impl->_M_facets;
      if (!(__i < __loc._M_impl->_M_facets_size && __facets[__i]))
        __throw_bad_cast();
      return static_cast<const _Facet&>(*__facets[__i]);
    }

  template<typename _Facet>
    bool
    has_facet(const locale& __loc) throw()
    {
      size_t __i = _Facet::id._M_id();
      locale::facet** __facets = __loc._M_impl->_M_facets;
      return (__i < __loc._M_impl->_M_facets_size && __facets[__i]);
    }


  // Stage 1: Determine a conversion specifier.
  template<typename _CharT, typename _InIter>
    _InIter
    num_get<_CharT, _InIter>::
    _M_extract_float(_InIter __beg, _InIter __end, ios_base& __io,
                     ios_base::iostate& __err, string& __xtrc) const
    {
      typedef char_traits<_CharT>               __traits_type;
      const locale __loc = __io.getloc();
      const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
      const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc);

      // First check for sign.
      const char_type __plus = __ctype.widen('+');
      const char_type __minus = __ctype.widen('-');
      int __pos = 0;
      char_type  __c = *__beg;
      if ((__traits_type::eq(__c, __plus) || __traits_type::eq(__c, __minus))
          && __beg != __end)
        {
          __xtrc += __ctype.narrow(__c, char());
          ++__pos;
          __c = *(++__beg);
        }

      // Next, strip leading zeros.
      const char_type __zero = __ctype.widen(_S_atoms[_M_zero]);
      bool __found_zero = false;
      while (__traits_type::eq(__c, __zero) && __beg != __end)
        {
          __c = *(++__beg);
          __found_zero = true;
        }
      if (__found_zero)
        {
          __xtrc += _S_atoms[_M_zero];
          ++__pos;
        }

      // Only need acceptable digits for floating point numbers.
      const size_t __len = _M_E - _M_zero + 1;
      char_type  __watoms[__len];
      __ctype.widen(_S_atoms, _S_atoms + __len, __watoms);
      bool __found_dec = false;
      bool __found_sci = false;
      const char_type __dec = __np.decimal_point();

      string __found_grouping;
      const string __grouping = __np.grouping();
      bool __check_grouping = __grouping.size();
      int __sep_pos = 0;
      const char_type __sep = __np.thousands_sep();

      while (__beg != __end)
        {
          // Only look in digits.
          const char_type* __p = __traits_type::find(__watoms, 10,  __c);

          // NB: strchr returns true for __c == 0x0
          if (__p && !__traits_type::eq(__c, char_type()))
            {
              // Try first for acceptable digit; record it if found.
              ++__pos;
              __xtrc += _S_atoms[__p - __watoms];
              ++__sep_pos;
              __c = *(++__beg);
            }
          else if (__traits_type::eq(__c, __sep) 
                   && __check_grouping && !__found_dec)
            {
              // NB: Thousands separator at the beginning of a string
              // is a no-no, as is two consecutive thousands separators.
              if (__sep_pos)
                {
                  __found_grouping += static_cast<char>(__sep_pos);
                  __sep_pos = 0;
                  __c = *(++__beg);
                }
              else
                {
                  __err |= ios_base::failbit;
                  break;
                }
            }
          else if (__traits_type::eq(__c, __dec) && !__found_dec)
            {
              // According to the standard, if no grouping chars are seen,
              // no grouping check is applied. Therefore __found_grouping
              // must be adjusted only if __dec comes after some __sep.
              if (__found_grouping.size())
                __found_grouping += static_cast<char>(__sep_pos);
              ++__pos;
              __xtrc += '.';
              __c = *(++__beg);
              __found_dec = true;
            }
          else if ((__traits_type::eq(__c, __watoms[_M_e]) 
                    || __traits_type::eq(__c, __watoms[_M_E])) 
                   && !__found_sci && __pos)
            {
              // Scientific notation.
              ++__pos;
              __xtrc += __ctype.narrow(__c, char());
              __c = *(++__beg);

              // Remove optional plus or minus sign, if they exist.
              if (__traits_type::eq(__c, __plus) 
                  || __traits_type::eq(__c, __minus))
                {
                  ++__pos;
                  __xtrc += __ctype.narrow(__c, char());
                  __c = *(++__beg);
                }
              __found_sci = true;
            }
          else
            // Not a valid input item.
            break;
        }

      // Digit grouping is checked. If grouping and found_grouping don't
      // match, then get very very upset, and set failbit.
      if (__check_grouping && __found_grouping.size())
        {
          // Add the ending grouping if a decimal wasn't found.
          if (!__found_dec)
            __found_grouping += static_cast<char>(__sep_pos);
          if (!this->__verify_grouping(__grouping, __found_grouping))
            __err |= ios_base::failbit;
        }

      // Finish up
      __xtrc += char();
      if (__beg == __end)
        __err |= ios_base::eofbit;
      return __beg;
    }

  // Stage 1: Determine a conversion specifier.
  template<typename _CharT, typename _InIter>
    _InIter
    num_get<_CharT, _InIter>::
    _M_extract_int(_InIter __beg, _InIter __end, ios_base& __io,
                   ios_base::iostate& __err, string& __xtrc, int& __base) const
    {
      typedef char_traits<_CharT>               __traits_type;
      const locale __loc = __io.getloc();
      const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
      const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc);
 
      // NB: Iff __basefield == 0, this can change based on contents.
      ios_base::fmtflags __basefield = __io.flags() & ios_base::basefield;
      if (__basefield == ios_base::oct)
        __base = 8;
      else if (__basefield == ios_base::hex)
        __base = 16;
      else
        __base = 10;

      // First check for sign.
      int __pos = 0;
      char_type  __c = *__beg;
      const char_type __plus = __ctype.widen('+');
      const char_type __minus = __ctype.widen('-');

      if ((__traits_type::eq(__c, __plus) || __traits_type::eq(__c, __minus))
          && __beg != __end)
        {
          __xtrc += __ctype.narrow(__c, char());
          ++__pos;
          __c = *(++__beg);
        }

      // Next, strip leading zeros and check required digits for base formats.
      const char_type __zero = __ctype.widen(_S_atoms[_M_zero]);
      const char_type __x = __ctype.widen('x');
      const char_type __X = __ctype.widen('X');
      if (__base == 10)
        {
          bool __found_zero = false;
          while (__traits_type::eq(__c, __zero) && __beg != __end)
            {
              __c = *(++__beg);
              __found_zero = true;
            }
          if (__found_zero)
            {
              __xtrc += _S_atoms[_M_zero];
              ++__pos;
              if (__basefield == 0)
                {             
                  if ((__traits_type::eq(__c, __x) 
                       || __traits_type::eq(__c, __X))
                      && __beg != __end)
                    {
                      __xtrc += __ctype.narrow(__c, char());
                      ++__pos;
                      __c = *(++__beg);
                      __base = 16;
                    }
                  else 
                    __base = 8;
                }
            }
        }
      else if (__base == 16)
        {
          if (__traits_type::eq(__c, __zero) && __beg != __end)
            {
              __xtrc += _S_atoms[_M_zero];
              ++__pos;
              __c = *(++__beg); 
              if ((__traits_type::eq(__c, __x) || __traits_type::eq(__c, __X))
                  && __beg != __end)
                {
                  __xtrc += __ctype.narrow(__c, char());
                  ++__pos;
                  __c = *(++__beg);
                }
            }
        }

      // At this point, base is determined. If not hex, only allow
      // base digits as valid input.
      size_t __len;
      if (__base == 16)
        __len = _M_size;
      else
        __len = __base;

      // Extract.
      char_type __watoms[_M_size];
      __ctype.widen(_S_atoms, _S_atoms + __len, __watoms);
      string __found_grouping;
      const string __grouping = __np.grouping();
      bool __check_grouping = __grouping.size();
      int __sep_pos = 0;
      const char_type __sep = __np.thousands_sep();
      while (__beg != __end)
        {
          const char_type* __p = __traits_type::find(__watoms, __len,  __c);

          // NB: strchr returns true for __c == 0x0
          if (__p && !__traits_type::eq(__c, char_type()))
            {
              // Try first for acceptable digit; record it if found.
              __xtrc += _S_atoms[__p - __watoms];
              ++__pos;
              ++__sep_pos;
              __c = *(++__beg);
            }
          else if (__traits_type::eq(__c, __sep) && __check_grouping)
            {
              // NB: Thousands separator at the beginning of a string
              // is a no-no, as is two consecutive thousands separators.
              if (__sep_pos)
                {
                  __found_grouping += static_cast<char>(__sep_pos);
                  __sep_pos = 0;
                  __c = *(++__beg);
                }
              else
                {
                  __err |= ios_base::failbit;
                  break;
                }
            }
          else
            // Not a valid input item.
            break;
        }

      // Digit grouping is checked. If grouping and found_grouping don't
      // match, then get very very upset, and set failbit.
      if (__check_grouping && __found_grouping.size())
        {
          // Add the ending grouping.
          __found_grouping += static_cast<char>(__sep_pos);
          if (!this->__verify_grouping(__grouping, __found_grouping))
            __err |= ios_base::failbit;
        }

      // Finish up.
      __xtrc += char();
      if (__beg == __end)
        __err |= ios_base::eofbit;
      return __beg;
    }

#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
  //17.  Bad bool parsing
  template<typename _CharT, typename _InIter>
    _InIter
    num_get<_CharT, _InIter>::
    do_get(iter_type __beg, iter_type __end, ios_base& __io,
           ios_base::iostate& __err, bool& __v) const
    {
      // Parse bool values as unsigned long
      if (!(__io.flags() & ios_base::boolalpha))
        {
          // NB: We can't just call do_get(long) here, as it might
          // refer to a derived class.
          string __xtrc;
          int __base;
          __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);

          unsigned long __ul; 
          this->__convert_to_v(__xtrc.c_str(), __ul, __err, _S_c_locale, __base);
          if (!(__err & ios_base::failbit) && __ul <= 1)
            __v = __ul;
          else 
            __err |= ios_base::failbit;
        }

      // Parse bool values as alphanumeric
      else
        {
          typedef char_traits<_CharT>           __traits_type;
          typedef basic_string<_CharT>          __string_type;

          locale __loc = __io.getloc();
          const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc); 
          const __string_type __true = __np.truename();
          const __string_type __false = __np.falsename();
          const char_type* __trues = __true.c_str();
          const char_type* __falses = __false.c_str();
          const size_t __truen =  __true.size() - 1;
          const size_t __falsen =  __false.size() - 1;

          for (size_t __n = 0; __beg != __end; ++__n)
            {
              char_type __c = *__beg++;
              bool __testf = __n <= __falsen 
                             ? __traits_type::eq(__c, __falses[__n]) : false;
              bool __testt = __n <= __truen 
                             ? __traits_type::eq(__c, __trues[__n]) : false;
              if (!(__testf || __testt))
                {
                  __err |= ios_base::failbit;
                  break;
                }
              else if (__testf && __n == __falsen)
                {
                  __v = 0;
                  break;
                }
              else if (__testt && __n == __truen)
                {
                  __v = 1;
                  break;
                }
            }
          if (__beg == __end)
            __err |= ios_base::eofbit;
        }
      return __beg;
    }
#endif

  template<typename _CharT, typename _InIter>
    _InIter
    num_get<_CharT, _InIter>::
    do_get(iter_type __beg, iter_type __end, ios_base& __io,
           ios_base::iostate& __err, long& __v) const
    {
      string __xtrc;
      int __base;
      __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
      this->__convert_to_v(__xtrc.c_str(), __v, __err, _S_c_locale, __base);
      return __beg;
    }

  template<typename _CharT, typename _InIter>
    _InIter
    num_get<_CharT, _InIter>::
    do_get(iter_type __beg, iter_type __end, ios_base& __io,
           ios_base::iostate& __err, unsigned short& __v) const
    {
      string __xtrc;
      int __base;
      __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
      unsigned long __ul;
      this->__convert_to_v(__xtrc.c_str(), __ul, __err, _S_c_locale, __base);
      if (!(__err & ios_base::failbit) 
          && __ul <= numeric_limits<unsigned short>::max())
        __v = static_cast<unsigned short>(__ul);
      else 
        __err |= ios_base::failbit;
      return __beg;
    }

  template<typename _CharT, typename _InIter>
    _InIter
    num_get<_CharT, _InIter>::
    do_get(iter_type __beg, iter_type __end, ios_base& __io,
           ios_base::iostate& __err, unsigned int& __v) const
    {
      string __xtrc;
      int __base;
      __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
      unsigned long __ul;
      this->__convert_to_v(__xtrc.c_str(), __ul, __err, _S_c_locale, __base);
      if (!(__err & ios_base::failbit) 
          && __ul <= numeric_limits<unsigned int>::max())
        __v = static_cast<unsigned int>(__ul);
      else 
        __err |= ios_base::failbit;
      return __beg;
    }

  template<typename _CharT, typename _InIter>
    _InIter
    num_get<_CharT, _InIter>::
    do_get(iter_type __beg, iter_type __end, ios_base& __io,
           ios_base::iostate& __err, unsigned long& __v) const
    {
      string __xtrc;
      int __base;
      __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
      this->__convert_to_v(__xtrc.c_str(), __v, __err, _S_c_locale, __base);
      return __beg;
    }

#ifdef _GLIBCPP_USE_LONG_LONG
  template<typename _CharT, typename _InIter>
    _InIter
    num_get<_CharT, _InIter>::
    do_get(iter_type __beg, iter_type __end, ios_base& __io,
           ios_base::iostate& __err, long long& __v) const
    {
      string __xtrc;
      int __base;
      __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
      this->__convert_to_v(__xtrc.c_str(), __v, __err, _S_c_locale, __base);
      return __beg;
    }

  template<typename _CharT, typename _InIter>
    _InIter
    num_get<_CharT, _InIter>::
    do_get(iter_type __beg, iter_type __end, ios_base& __io,
           ios_base::iostate& __err, unsigned long long& __v) const
    {
      string __xtrc;
      int __base;
      __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
      this->__convert_to_v(__xtrc.c_str(), __v, __err, _S_c_locale, __base);
      return __beg;
    }
#endif

  template<typename _CharT, typename _InIter>
    _InIter
    num_get<_CharT, _InIter>::
    do_get(iter_type __beg, iter_type __end, ios_base& __io, 
           ios_base::iostate& __err, float& __v) const
    {
      string __xtrc;
      __xtrc.reserve(32);
      __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
      this->__convert_to_v(__xtrc.c_str(), __v, __err, _S_c_locale);
      return __beg;
    }

  template<typename _CharT, typename _InIter>
    _InIter
    num_get<_CharT, _InIter>::
    do_get(iter_type __beg, iter_type __end, ios_base& __io,
           ios_base::iostate& __err, double& __v) const
    {
      string __xtrc;
      __xtrc.reserve(32);
      __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
      this->__convert_to_v(__xtrc.c_str(), __v, __err, _S_c_locale);
      return __beg;
    }

  template<typename _CharT, typename _InIter>
    _InIter
    num_get<_CharT, _InIter>::
    do_get(iter_type __beg, iter_type __end, ios_base& __io,
           ios_base::iostate& __err, long double& __v) const
    {
      string __xtrc;
      __xtrc.reserve(32);
      __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
      this->__convert_to_v(__xtrc.c_str(), __v, __err, _S_c_locale);
      return __beg;
    }

  template<typename _CharT, typename _InIter>
    _InIter
    num_get<_CharT, _InIter>::
    do_get(iter_type __beg, iter_type __end, ios_base& __io,
           ios_base::iostate& __err, void*& __v) const
    {
      // Prepare for hex formatted input
      typedef ios_base::fmtflags        fmtflags;
      fmtflags __fmt = __io.flags();
      fmtflags __fmtmask = ~(ios_base::showpos | ios_base::basefield
                             | ios_base::uppercase | ios_base::internal);
      __io.flags(__fmt & __fmtmask | (ios_base::hex | ios_base::showbase));

      string __xtrc;
      int __base;
      __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);

      // Reset from hex formatted input
      __io.flags(__fmt);

      unsigned long __ul;
      this->__convert_to_v(__xtrc.c_str(), __ul, __err, _S_c_locale, __base);
      if (!(__err & ios_base::failbit))
        __v = reinterpret_cast<void*>(__ul);
      else 
        __err |= ios_base::failbit;
      return __beg;
    }

  // The following code uses snprintf (or sprintf(), when _GLIBCPP_USE_C99
  // is not defined) to convert floating point values for insertion into a
  // stream.  An optimization would be to replace them with code that works
  // directly on a wide buffer and then use __pad to do the padding.
  // It would be good to replace them anyway to gain back the efficiency
  // that C++ provides by knowing up front the type of the values to insert.
  // Also, sprintf is dangerous since may lead to accidental buffer overruns.
  // This implementation follows the C++ standard fairly directly as
  // outlined in 22.2.2.2 [lib.locale.num.put]
  template<typename _CharT, typename _OutIter>
    template<typename _ValueT>
      _OutIter
      num_put<_CharT, _OutIter>::
      _M_convert_float(_OutIter __s, ios_base& __io, _CharT __fill, char __mod,
                       _ValueT __v) const
      {
        // Note: digits10 is rounded down: we need to add 1 to ensure
        // we get the full available precision.
        // Then, in general, one more 1 needs to be added since, when the
        // %{g,G} conversion specifiers are chosen inside _S_format_float, the
        // precision field is "the maximum number of significant digits", *not*
        // the "number of digits to appear after the decimal point", as happens
        // for %{e,E,f,F} (C99, 7.19.6.1,4).
        const int __max_digits = numeric_limits<_ValueT>::digits10 + 2;
        streamsize __prec = __io.precision();

        if (__prec > static_cast<streamsize>(__max_digits))
          __prec = static_cast<streamsize>(__max_digits);

        // Long enough for the max format spec.
        char __fbuf[16];

        // [22.2.2.2.2] Stage 1, numeric conversion to character.
        int __len;
#ifdef _GLIBCPP_USE_C99
        // First try a buffer perhaps big enough (for sure sufficient for
        // non-ios_base::fixed outputs)
        int __cs_size = __max_digits * 3;
        char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));

        const bool __fp = _S_format_float(__io, __fbuf, __mod, __prec);
        if (__fp)
          __len = __convert_from_v(__cs, __cs_size, __fbuf, __v, 
                                   _S_c_locale, __prec);
        else
          __len = __convert_from_v(__cs, __cs_size, __fbuf, __v, _S_c_locale);

        // If the buffer was not large enough, try again with the correct size.
        if (__len >= __cs_size)
          {
            __cs_size = __len + 1; 
            __cs = static_cast<char*>(__builtin_alloca(__cs_size));
            if (__fp)
              __len = __convert_from_v(__cs, __cs_size, __fbuf, __v, 
                                       _S_c_locale, __prec);
            else
              __len = __convert_from_v(__cs, __cs_size, __fbuf, __v, 
                                       _S_c_locale);
          }
#else
        // Consider the possibility of long ios_base::fixed outputs
        const bool __fixed = __io.flags() & ios_base::fixed;
        const int __max_exp = numeric_limits<_ValueT>::max_exponent10;
        // ios_base::fixed outputs may need up to __max_exp+1 chars
        // for the integer part + up to __max_digits chars for the
        // fractional part + 3 chars for sign, decimal point, '\0'. On
        // the other hand, for non-fixed outputs __max_digits*3 chars
        // are largely sufficient.
        const int __cs_size = __fixed ? __max_exp + __max_digits + 4 
                                      : __max_digits * 3;
        char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));

        if (_S_format_float(__io, __fbuf, __mod, __prec))
          __len = __convert_from_v(__cs, 0, __fbuf, __v, _S_c_locale, __prec);
        else
          __len = __convert_from_v(__cs, 0, __fbuf, __v, _S_c_locale);
#endif
        return _M_widen_float(__s, __io, __fill, __cs, __len);
      }

  template<typename _CharT, typename _OutIter>
    template<typename _ValueT>
      _OutIter
      num_put<_CharT, _OutIter>::
      _M_convert_int(_OutIter __s, ios_base& __io, _CharT __fill, char __mod,
                     char __modl, _ValueT __v) const
      {
        // [22.2.2.2.2] Stage 1, numeric conversion to character.

        // Long enough for the max format spec.
        char __fbuf[16];
        _S_format_int(__io, __fbuf, __mod, __modl);
#ifdef _GLIBCPP_USE_C99
        // First try a buffer perhaps big enough.
        int __cs_size = 64;
        char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
        int __len = __convert_from_v(__cs, __cs_size, __fbuf, __v, 
                                     _S_c_locale);
        // If the buffer was not large enough, try again with the correct size.
        if (__len >= __cs_size)
          {
            __cs_size = __len + 1;
            __cs = static_cast<char*>(__builtin_alloca(__cs_size));
            __len = __convert_from_v(__cs, __cs_size, __fbuf, __v, 
                                     _S_c_locale);
          }
#else
        // Leave room for "+/-," "0x," and commas. This size is
        // arbitrary, but should be largely sufficient.
        char __cs[128];
        int __len = __convert_from_v(__cs, 0, __fbuf, __v, _S_c_locale);
#endif
        return _M_widen_int(__s, __io, __fill, __cs, __len);
      }

  template<typename _CharT, typename _OutIter>
    _OutIter
    num_put<_CharT, _OutIter>::
    _M_widen_float(_OutIter __s, ios_base& __io, _CharT __fill, char* __cs, 
                   int __len) const
    {
      typedef char_traits<_CharT>               __traits_type;
      // [22.2.2.2.2] Stage 2, convert to char_type, using correct
      // numpunct.decimal_point() values for '.' and adding grouping.
      const locale __loc = __io.getloc();
      const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
      _CharT* __ws = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) 
                                                           * __len));
      // Grouping can add (almost) as many separators as the number of
      // digits, but no more.
      _CharT* __ws2 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) 
                                                            * __len * 2));
      __ctype.widen(__cs, __cs + __len, __ws);
      
      // Replace decimal point.
      const _CharT* __p;
      const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc);
      if (__p = __traits_type::find(__ws, __len, __ctype.widen('.')))
        __ws[__p - __ws] = __np.decimal_point();

#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
//282. What types does numpunct grouping refer to?
      // Add grouping, if necessary. 
      const string __grouping = __np.grouping();
      ios_base::fmtflags __basefield = __io.flags() & ios_base::basefield;
      if (__grouping.size())
        {
          _CharT* __p2;
          int __declen = __p ? __p - __ws : __len;
          __p2 = __add_grouping(__ws2, __np.thousands_sep(), 
                                __grouping.c_str(),
                                __grouping.c_str() + __grouping.size(),
                                __ws, __ws + __declen);
          int __newlen = __p2 - __ws2;
        
          // Tack on decimal part.
          if (__p)
            {
              __traits_type::copy(__p2, __p, __len - __declen);
              __newlen += __len - __declen;
            }    

          // Switch strings, establish correct new length.
          __ws = __ws2;
          __len = __newlen;
        }
#endif
      return _M_insert(__s, __io, __fill, __ws, __len);
    }

  template<typename _CharT, typename _OutIter>
    _OutIter
    num_put<_CharT, _OutIter>::
    _M_widen_int(_OutIter __s, ios_base& __io, _CharT __fill, char* __cs, 
                 int __len) const
    {
      // [22.2.2.2.2] Stage 2, convert to char_type, using correct
      // numpunct.decimal_point() values for '.' and adding grouping.
      const locale __loc = __io.getloc();
      const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
      _CharT* __ws = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) 
                                                           * __len));
      // Grouping can add (almost) as many separators as the number of
      // digits, but no more.
      _CharT* __ws2 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) 
                                                            * __len * 2));
      __ctype.widen(__cs, __cs + __len, __ws);

      // Add grouping, if necessary. 
      const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc);
      const string __grouping = __np.grouping();
      const ios_base::fmtflags __basefield = __io.flags() & ios_base::basefield;
      if (__grouping.size())
        {
          // By itself __add_grouping cannot deal correctly with __ws when
          // ios::showbase is set and ios_base::oct || ios_base::hex.
          // Therefore we take care "by hand" of the initial 0, 0x or 0X.
          // However, remember that the latter do not occur if the number
          // printed is '0' (__len == 1).
          streamsize __off = 0;
          if ((__io.flags() & ios_base::showbase) && __len > 1)
            if (__basefield == ios_base::oct)
              {
                __off = 1;
                *__ws2 = *__ws;
              }
            else if (__basefield == ios_base::hex)
              {
                __off = 2;
                *__ws2 = *__ws;
                *(__ws2 + 1) = *(__ws + 1);
              }
          _CharT* __p;
          __p = __add_grouping(__ws2 + __off, __np.thousands_sep(), 
                               __grouping.c_str(),
                               __grouping.c_str() + __grouping.size(),
                               __ws + __off, __ws + __len);
          __len = __p - __ws2;
          // Switch strings.
          __ws = __ws2;
        }
      return _M_insert(__s, __io, __fill, __ws, __len);
    }

  // For use by integer and floating-point types after they have been
  // converted into a char_type string.
  template<typename _CharT, typename _OutIter>
    _OutIter
    num_put<_CharT, _OutIter>::
    _M_insert(_OutIter __s, ios_base& __io, _CharT __fill, const _CharT* __ws, 
              int __len) const
    {
      typedef char_traits<_CharT>               __traits_type;
      // [22.2.2.2.2] Stage 3.
      streamsize __w = __io.width();
      _CharT* __ws2 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) 
                                                            * __w));
      if (__w > static_cast<streamsize>(__len))
        {
          __pad<_CharT, __traits_type>::_S_pad(__io, __fill, __ws2, __ws, 
                                               __w, __len, true);
          __len = static_cast<int>(__w);
          // Switch strings.
          __ws = __ws2;
        }
      __io.width(0);

      // [22.2.2.2.2] Stage 4.
      // Write resulting, fully-formatted string to output iterator.
      for (int __j = 0; __j < __len; ++__j, ++__s)
        *__s = __ws[__j];
      return __s;
    }

  template<typename _CharT, typename _OutIter>
    _OutIter
    num_put<_CharT, _OutIter>::
    do_put(iter_type __s, ios_base& __io, char_type __fill, bool __v) const
    {
      ios_base::fmtflags __flags = __io.flags();
      if ((__flags & ios_base::boolalpha) == 0)
        {
          unsigned long __uv = __v;
          __s = _M_convert_int(__s, __io, __fill, 'u', char(), __uv);
        }
      else
        {
          typedef basic_string<_CharT> __string_type;
          locale __loc = __io.getloc();
          const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc); 
          __string_type __name;
          if (__v)
            __name = __np.truename();
          else
            __name = __np.falsename();
          __s = _M_insert(__s, __io, __fill, __name.c_str(), __name.size()); 
        }
      return __s;
    }

  template<typename _CharT, typename _OutIter>
    _OutIter
    num_put<_CharT, _OutIter>::
    do_put(iter_type __s, ios_base& __io, char_type __fill, long __v) const
    { return _M_convert_int(__s, __io, __fill, 'd', char(), __v); }

  template<typename _CharT, typename _OutIter>
    _OutIter
    num_put<_CharT, _OutIter>::
    do_put(iter_type __s, ios_base& __io, char_type __fill,
           unsigned long __v) const
    { return _M_convert_int(__s, __io, __fill, 'u', char(), __v); }

#ifdef _GLIBCPP_USE_LONG_LONG
  template<typename _CharT, typename _OutIter>
    _OutIter
    num_put<_CharT, _OutIter>::
    do_put(iter_type __s, ios_base& __b, char_type __fill, long long __v) const
    { return _M_convert_int(__s, __b, __fill, 'd', 'l', __v); }

  template<typename _CharT, typename _OutIter>
    _OutIter
    num_put<_CharT, _OutIter>::
    do_put(iter_type __s, ios_base& __io, char_type __fill,
           unsigned long long __v) const
    { return _M_convert_int(__s, __io, __fill, 'u', 'l', __v); }
#endif

  template<typename _CharT, typename _OutIter>
    _OutIter
    num_put<_CharT, _OutIter>::
    do_put(iter_type __s, ios_base& __io, char_type __fill, double __v) const
    { return _M_convert_float(__s, __io, __fill, char(), __v); }

  template<typename _CharT, typename _OutIter>
    _OutIter
    num_put<_CharT, _OutIter>::
    do_put(iter_type __s, ios_base& __io, char_type __fill, 
           long double __v) const
    { return _M_convert_float(__s, __io, __fill, 'L', __v); }

  template<typename _CharT, typename _OutIter>
    _OutIter
    num_put<_CharT, _OutIter>::
    do_put(iter_type __s, ios_base& __io, char_type __fill,
           const void* __v) const
    {
      ios_base::fmtflags __flags = __io.flags();
      ios_base::fmtflags __fmt = ~(ios_base::showpos | ios_base::basefield
                                   | ios_base::uppercase | ios_base::internal);
      __io.flags(__flags & __fmt | (ios_base::hex | ios_base::showbase));
      try 
        {
          __s = _M_convert_int(__s, __io, __fill, 'u', char(),
                               reinterpret_cast<unsigned long>(__v));
          __io.flags(__flags);
        }
      catch (...) 
        {
          __io.flags(__flags);
          __throw_exception_again;
        }
      return __s;
    }


  template<typename _CharT, typename _InIter>
    _InIter
    money_get<_CharT, _InIter>::
    do_get(iter_type __beg, iter_type __end, bool __intl, ios_base& __io, 
           ios_base::iostate& __err, long double& __units) const
    { 
      string_type __str;
      __beg = this->do_get(__beg, __end, __intl, __io, __err, __str); 

      const int __n = numeric_limits<long double>::digits10;
      char* __cs = static_cast<char*>(__builtin_alloca(__n));
      const locale __loc = __io.getloc();
      const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc); 
      const _CharT* __wcs = __str.c_str();
      __ctype.narrow(__wcs, __wcs + __str.size() + 1, char(), __cs);      
      this->__convert_to_v(__cs, __units, __err, _S_c_locale);
      return __beg;
    }

  template<typename _CharT, typename _InIter>
    _InIter
    money_get<_CharT, _InIter>::
    do_get(iter_type __beg, iter_type __end, bool __intl, ios_base& __io, 
           ios_base::iostate& __err, string_type& __units) const
    { 
      // These contortions are quite unfortunate.
      typedef moneypunct<_CharT, true>          __money_true;
      typedef moneypunct<_CharT, false>         __money_false;
      typedef money_base::part                  part;
      typedef typename string_type::size_type   size_type;

      const locale __loc = __io.getloc();
      const __money_true& __mpt = use_facet<__money_true>(__loc); 
      const __money_false& __mpf = use_facet<__money_false>(__loc); 
      const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc); 

      const money_base::pattern __p = __intl ? __mpt.neg_format() 
                                             : __mpf.neg_format();

      const string_type __pos_sign =__intl ? __mpt.positive_sign() 
                                           : __mpf.positive_sign();
      const string_type __neg_sign =__intl ? __mpt.negative_sign() 
                                           : __mpf.negative_sign();
      const char_type __d = __intl ? __mpt.decimal_point() 
                                   : __mpf.decimal_point();
      const char_type __sep = __intl ? __mpt.thousands_sep() 
                                     : __mpf.thousands_sep();

      const string __grouping = __intl ? __mpt.grouping() : __mpf.grouping();

      // Set to deduced positive or negative sign, depending.
      string_type __sign;
      // String of grouping info from thousands_sep plucked from __units.
      string __grouping_tmp; 
      // Marker for thousands_sep position.
      int __sep_pos = 0;
      // If input iterator is in a valid state.
      bool __testvalid = true;
      // Flag marking when a decimal point is found.
      bool __testdecfound = false; 

      // The tentative returned string is stored here.
      string_type __temp_units;

      char_type __c = *__beg;
      char_type __eof = static_cast<char_type>(char_traits<char_type>::eof());
      for (int __i = 0; __beg != __end && __i < 4 && __testvalid; ++__i)
        {
          part __which = static_cast<part>(__p.field[__i]);
          switch (__which)
                {
                case money_base::symbol:
                  if (__io.flags() & ios_base::showbase 
                      || __i < 2 || __sign.size() > 1
                      || ((static_cast<part>(__p.field[3]) != money_base::none)
                          && __i == 2)) 
                    {
                      // According to 22.2.6.1.2.2, symbol is required
                      // if (__io.flags() & ios_base::showbase),
                      // otherwise is optional and consumed only if
                      // other characters are needed to complete the
                      // format.
                      const string_type __symbol = __intl ? __mpt.curr_symbol()
                                                         : __mpf.curr_symbol();
                      size_type __len = __symbol.size();
                      size_type __j = 0;
                      while (__beg != __end 
                             && __j < __len && __symbol[__j] == __c)
                        {
                          __c = *(++__beg);
                          ++__j;
                        }
                      // When (__io.flags() & ios_base::showbase)
                      // symbol is required.
                      if (__j != __len && (__io.flags() & ios_base::showbase))
                        __testvalid = false;
                    }
                  break;
                case money_base::sign:              
                  // Sign might not exist, or be more than one character long. 
                  if (__pos_sign.size() && __neg_sign.size())
                  {
                    // Sign is mandatory.
                    if (__c == __pos_sign[0])
                      {
                        __sign = __pos_sign;
                        __c = *(++__beg);
                      }
                    else if (__c == __neg_sign[0])
                      {
                        __sign = __neg_sign;
                        __c = *(++__beg);
                      }
                    else
                      __testvalid = false;
                  }
                  else if (__pos_sign.size() && __c == __pos_sign[0])
                    {
                      __sign = __pos_sign;
                      __c = *(++__beg);
                    }
                  else if (__neg_sign.size() && __c == __neg_sign[0])
                    {
                      __sign = __neg_sign;
                      __c = *(++__beg);
                    }
                  break;
                case money_base::value:
                  // Extract digits, remove and stash away the
                  // grouping of found thousands separators.
                  while (__beg != __end 
                         && (__ctype.is(ctype_base::digit, __c) 
                             || (__c == __d && !__testdecfound)
                             || __c == __sep))
                    {
                      if (__c == __d)
                        {
                          __grouping_tmp += static_cast<char>(__sep_pos);
                          __sep_pos = 0;
                          __testdecfound = true;
                        }
                      else if (__c == __sep)
                        {
                          if (__grouping.size())
                            {
                              // Mark position for later analysis.
                              __grouping_tmp += static_cast<char>(__sep_pos);
                              __sep_pos = 0;
                            }
                          else
                            {
                              __testvalid = false;
                              break;
                            }
                        }
                      else
                        {
                          __temp_units += __c;
                          ++__sep_pos;
                        }
                      __c = *(++__beg);
                    }
                  break;
                case money_base::space:
                case money_base::none:
                  // Only if not at the end of the pattern.
                  if (__i != 3)
                    while (__beg != __end 
                           && __ctype.is(ctype_base::space, __c))
                      __c = *(++__beg);
                  break;
                }
        }

      // Need to get the rest of the sign characters, if they exist.
      if (__sign.size() > 1)
        {
          size_type __len = __sign.size();
          size_type __i = 1;
          for (; __c != __eof && __i < __len; ++__i)
            while (__beg != __end && __c != __sign[__i])
              __c = *(++__beg);
          
          if (__i != __len)
            __testvalid = false;
        }

      // Strip leading zeros.
      while (__temp_units[0] == __ctype.widen('0'))
        __temp_units.erase(__temp_units.begin());

      if (__sign.size() && __sign == __neg_sign)
        __temp_units.insert(__temp_units.begin(), __ctype.widen('-'));

      // Test for grouping fidelity.
      if (__grouping.size() && __grouping_tmp.size())
        {
          if (!this->__verify_grouping(__grouping, __grouping_tmp))
            __testvalid = false;
        }

      // Iff no more characters are available.      
      if (__c == __eof)
        __err |= ios_base::eofbit;

      // Iff valid sequence is not recognized.
      if (!__testvalid || !__temp_units.size())
        __err |= ios_base::failbit;
      else
        // Use the "swap trick" to copy __temp_units into __units.
        __temp_units.swap(__units);

      return __beg; 
    }

  template<typename _CharT, typename _OutIter>
    _OutIter
    money_put<_CharT, _OutIter>::
    do_put(iter_type __s, bool __intl, ios_base& __io, char_type __fill,
           long double __units) const
    { 
      const locale __loc = __io.getloc();
      const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
#ifdef _GLIBCPP_USE_C99
      // First try a buffer perhaps big enough.
      int __cs_size = 64;
      char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
      int __len = __convert_from_v(__cs, __cs_size, "%.01Lf", __units, 
                                   _S_c_locale);
      // If the buffer was not large enough, try again with the correct size.
      if (__len >= __cs_size)
        {
          __cs_size = __len + 1;
          __cs = static_cast<char*>(__builtin_alloca(__cs_size));
          __len = __convert_from_v(__cs, __cs_size, "%.01Lf", __units, 
                                   _S_c_locale);
        }
#else
      // max_exponent10 + 1 for the integer part, + 4 for sign, decimal point,
      // decimal digit, '\0'. 
      const int __cs_size = numeric_limits<long double>::max_exponent10 + 5;
      char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
      int __len = __convert_from_v(__cs, 0, "%.01Lf", __units, _S_c_locale);
#endif
      _CharT* __ws = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * __cs_size));
      __ctype.widen(__cs, __cs + __len, __ws);
      string_type __digits(__ws);
      return this->do_put(__s, __intl, __io, __fill, __digits); 
    }

  template<typename _CharT, typename _OutIter>
    _OutIter
    money_put<_CharT, _OutIter>::
    do_put(iter_type __s, bool __intl, ios_base& __io, char_type __fill,
           const string_type& __digits) const
    { 
      typedef typename string_type::size_type   size_type;
      typedef money_base::part                  part;

      const locale __loc = __io.getloc();
      const size_type __width = static_cast<size_type>(__io.width());

      // These contortions are quite unfortunate.
      typedef moneypunct<_CharT, true> __money_true;
      typedef moneypunct<_CharT, false> __money_false;
      const __money_true& __mpt = use_facet<__money_true>(__loc); 
      const __money_false& __mpf = use_facet<__money_false>(__loc); 
      const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc); 

      // Determine if negative or positive formats are to be used, and
      // discard leading negative_sign if it is present.
      const char_type* __beg = __digits.data();
      const char_type* __end = __beg + __digits.size();
      money_base::pattern __p;
      string_type __sign;
      if (*__beg != __ctype.widen('-'))
        {
          __p = __intl ? __mpt.pos_format() : __mpf.pos_format();
          __sign =__intl ? __mpt.positive_sign() : __mpf.positive_sign();
        }
      else
        {
          __p = __intl ? __mpt.neg_format() : __mpf.neg_format();
          __sign =__intl ? __mpt.negative_sign() : __mpf.negative_sign();
          ++__beg;
        }
      
      // Look for valid numbers in the current ctype facet within input digits.
      __end = __ctype.scan_not(ctype_base::digit, __beg, __end);
      if (__beg != __end)
        {
          // Assume valid input, and attempt to format.
          // Break down input numbers into base components, as follows:
          //   final_value = grouped units + (decimal point) + (digits)
          string_type __res;
          string_type __value;
          const string_type __symbol = __intl ? __mpt.curr_symbol() 
                                              : __mpf.curr_symbol();

          // Deal with decimal point, decimal digits.
          const int __frac = __intl ? __mpt.frac_digits() 
                                    : __mpf.frac_digits();
          if (__frac > 0)
            {
              const char_type __d = __intl ? __mpt.decimal_point() 
                                           : __mpf.decimal_point();
              if (__end - __beg >= __frac)
                {
                  __value = string_type(__end - __frac, __end);
                  __value.insert(__value.begin(), __d);
                  __end -= __frac;
                }
              else
                {
                  // Have to pad zeros in the decimal position.
                  __value = string_type(__beg, __end);
                  int __paddec = __frac - (__end - __beg);
                  char_type __zero = __ctype.widen('0');
                  __value.insert(__value.begin(), __paddec, __zero);
                  __value.insert(__value.begin(), __d);
                  __beg = __end;
                }
            }

          // Add thousands separators to non-decimal digits, per
          // grouping rules.
          if (__beg != __end)
            {
              const string __grouping = __intl ? __mpt.grouping() 
                                               : __mpf.grouping();
              if (__grouping.size())
                {
                  const char_type __sep = __intl ? __mpt.thousands_sep() 
                                                 : __mpf.thousands_sep();
                  const char* __gbeg = __grouping.c_str();
                  const char* __gend = __gbeg + __grouping.size();
                  const int __n = (__end - __beg) * 2;
                  _CharT* __ws2 =
                    static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * __n));
                  _CharT* __ws_end = __add_grouping(__ws2, __sep, __gbeg, 
                                                    __gend, __beg, __end);
                  __value.insert(0, __ws2, __ws_end - __ws2);
                }
              else
                __value.insert(0, string_type(__beg, __end));
            }

          // Calculate length of resulting string.
          ios_base::fmtflags __f = __io.flags() & ios_base::adjustfield;
          size_type __len = __value.size() + __sign.size();
          __len += (__io.flags() & ios_base::showbase) ? __symbol.size() : 0;
          bool __testipad = __f == ios_base::internal && __len < __width;

          // Fit formatted digits into the required pattern.
          for (int __i = 0; __i < 4; ++__i)
            {
              part __which = static_cast<part>(__p.field[__i]);
              switch (__which)
                {
                case money_base::symbol:
                  if (__io.flags() & ios_base::showbase)
                    __res += __symbol;
                  break;
                case money_base::sign:              
                  // Sign might not exist, or be more than one
                  // charater long. In that case, add in the rest
                  // below.
                  if (__sign.size())
                    __res += __sign[0];
                  break;
                case money_base::value:
                  __res += __value;
                  break;
                case money_base::space:
                  // At least one space is required, but if internal
                  // formatting is required, an arbitrary number of
                  // fill spaces will be necessary.
                  if (__testipad)
                    __res += string_type(__width - __len, __fill);
                  else
                    __res += __ctype.widen(__fill);
                  break;
                case money_base::none:
                  if (__testipad)
                    __res += string_type(__width - __len, __fill);
                  break;
                }
            }

          // Special case of multi-part sign parts.
          if (__sign.size() > 1)
            __res += string_type(__sign.begin() + 1, __sign.end());

          // Pad, if still necessary.
          __len = __res.size();
          if (__width > __len)
            {
              if (__f == ios_base::left)
                // After.
                __res.append(__width - __len, __fill);
              else
                // Before.
                __res.insert(0, string_type(__width - __len, __fill));
              __len = __width;
            }

          // Write resulting, fully-formatted string to output iterator.
          for (size_type __j = 0; __j < __len; ++__j, ++__s)
            *__s = __res[__j];
        }
      __io.width(0);
      return __s; 
    }


  // NB: Not especially useful. Without an ios_base object or some
  // kind of locale reference, we are left clawing at the air where
  // the side of the mountain used to be...
  template<typename _CharT, typename _InIter>
    time_base::dateorder
    time_get<_CharT, _InIter>::do_date_order() const
    { return time_base::no_order; }

  template<typename _CharT, typename _InIter>
    void
    time_get<_CharT, _InIter>::
    _M_extract_via_format(iter_type& __beg, iter_type& __end, ios_base& __io,
                          ios_base::iostate& __err, tm* __tm, 
                          const _CharT* __format) const
    {  
      locale __loc = __io.getloc();
      __timepunct<_CharT> const& __tp = use_facet<__timepunct<_CharT> >(__loc);
      const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc); 
      size_t __len = char_traits<_CharT>::length(__format);

      for (size_t __i = 0; __beg != __end && __i < __len && !__err; ++__i)
        {
          char __c = __format[__i];
          if (__c == '%')
            {
              // Verify valid formatting code, attempt to extract.
              __c = __format[++__i];
              char __mod = 0;
              int __mem = 0; 
              if (__c == 'E' || __c == 'O')
                {
                  __mod = __c;
                  __c = __format[++__i];
                }
              switch (__c)
                {
                  const char* __cs;
                  _CharT __wcs[10];
                case 'a':
                  // Abbreviated weekday name [tm_wday]
                  const char_type*  __days1[7];
                  __tp._M_days_abbreviated(__days1);
                  _M_extract_name(__beg, __end, __tm->tm_wday, __days1, 7, 
                                  __err);
                  break;
                case 'A':
                  // Weekday name [tm_wday].
                  const char_type*  __days2[7];
                  __tp._M_days(__days2);
                  _M_extract_name(__beg, __end, __tm->tm_wday, __days2, 7, 
                                  __err);
                  break;
                case 'h':
                case 'b':
                  // Abbreviated month name [tm_mon]
                  const char_type*  __months1[12];
                  __tp._M_months_abbreviated(__months1);
                  _M_extract_name(__beg, __end, __tm->tm_mon, __months1, 12, 
                                  __err);
                  break;
                case 'B':
                  // Month name [tm_mon].
                  const char_type*  __months2[12];
                  __tp._M_months(__months2);
                  _M_extract_name(__beg, __end, __tm->tm_mon, __months2, 12, 
                                  __err);
                  break;
                case 'c':
                  // Default time and date representation.
                  const char_type*  __dt[2];
                  __tp._M_date_time_formats(__dt);
                  _M_extract_via_format(__beg, __end, __io, __err, __tm, 
                                        __dt[0]);
                  break;
                case 'd':
                  // Day [01, 31]. [tm_mday]
                  _M_extract_num(__beg, __end, __tm->tm_mday, 1, 31, 2, 
                                 __ctype, __err);
                  break;
                case 'D':
                  // Equivalent to %m/%d/%y.[tm_mon, tm_mday, tm_year]
                  __cs = "%m/%d/%y";
                  __ctype.widen(__cs, __cs + 9, __wcs);
                  _M_extract_via_format(__beg, __end, __io, __err, __tm, 
                                        __wcs);
                  break;
                case 'H':
                  // Hour [00, 23]. [tm_hour]
                  _M_extract_num(__beg, __end, __tm->tm_hour, 0, 23, 2,
                                 __ctype, __err);
                  break;
                case 'I':
                  // Hour [01, 12]. [tm_hour]
                  _M_extract_num(__beg, __end, __tm->tm_hour, 1, 12, 2, 
                                 __ctype, __err);
                  break;
                case 'm':
                  // Month [01, 12]. [tm_mon]
                  _M_extract_num(__beg, __end, __mem, 1, 12, 2, __ctype, 
                                 __err);
                  if (!__err)
                    __tm->tm_mon = __mem - 1;
                  break;
                case 'M':
                  // Minute [00, 59]. [tm_min]
                  _M_extract_num(__beg, __end, __tm->tm_min, 0, 59, 2,
                                 __ctype, __err);
                  break;
                case 'n':
                  if (__ctype.narrow(*__beg, 0) == '\n')
                    ++__beg;
                  else
                    __err |= ios_base::failbit;
                  break;
                case 'R':
                  // Equivalent to (%H:%M).
                  __cs = "%H:%M";
                  __ctype.widen(__cs, __cs + 6, __wcs);
                  _M_extract_via_format(__beg, __end, __io, __err, __tm, 
                                        __wcs);
                  break;
                case 'S':
                  // Seconds.
                  _M_extract_num(__beg, __end, __tm->tm_sec, 0, 59, 2,
                                 __ctype, __err);
                  break;
                case 't':
                  if (__ctype.narrow(*__beg, 0) == '\t')
                    ++__beg;
                  else
                __err |= ios_base::failbit;
                  break;
                case 'T':
                  // Equivalent to (%H:%M:%S).
                  __cs = "%H:%M:%S";
                  __ctype.widen(__cs, __cs + 9, __wcs);
                  _M_extract_via_format(__beg, __end, __io, __err, __tm, 
                                        __wcs);
                  break;
                case 'x':
                  // Locale's date.
                  const char_type*  __dates[2];
                  __tp._M_date_formats(__dates);
                  _M_extract_via_format(__beg, __end, __io, __err, __tm, 
                                        __dates[0]);
                  break;
                case 'X':
                  // Locale's time.
                  const char_type*  __times[2];
                  __tp._M_time_formats(__times);
                  _M_extract_via_format(__beg, __end, __io, __err, __tm, 
                                        __times[0]);
                  break;
                case 'y':
                  // Two digit year. [tm_year]
                  _M_extract_num(__beg, __end, __tm->tm_year, 0, 99, 2, 
                                 __ctype, __err);
                  break;
                case 'Y':
                  // Year [1900). [tm_year]
                  _M_extract_num(__beg, __end, __mem, 0, 
                                 numeric_limits<int>::max(), 4, 
                                 __ctype, __err);
                  if (!__err)
                    __tm->tm_year = __mem - 1900;
                  break;
                case 'Z':
                  // Timezone info.
                  if (__ctype.is(ctype_base::upper, *__beg))
                    {
                      int __tmp;
                      _M_extract_name(__beg, __end, __tmp, 
                                      __timepunct<_CharT>::_S_timezones, 
                                      14, __err);
                      
                      // GMT requires special effort.
                      char_type __c = *__beg;
                      if (!__err && __tmp == 0 
                          && (__c == __ctype.widen('-') 
                              || __c == __ctype.widen('+')))
                        {
                          _M_extract_num(__beg, __end, __tmp, 0, 23, 2,
                                          __ctype, __err);
                          _M_extract_num(__beg, __end, __tmp, 0, 59, 2,
                                          __ctype, __err);
                        }           
                          }
                      else
                        __err |= ios_base::failbit;
                      break;
                    default:
                      // Not recognized.
                      __err |= ios_base::failbit;
                    }
                }
              else
                {
                  // Verify format and input match, extract and discard.
                  if (__c == __ctype.narrow(*__beg, 0))
                    ++__beg;
                  else
                    __err |= ios_base::failbit;
                }
        }
    }

  template<typename _CharT, typename _InIter>
    void
    time_get<_CharT, _InIter>::
    _M_extract_num(iter_type& __beg, iter_type& __end, int& __member,
                   int __min, int __max, size_t __len, 
                   const ctype<_CharT>& __ctype, 
                   ios_base::iostate& __err) const
    {
      size_t __i = 0;
      string __digits;
      bool __testvalid = true;
      char_type __c = *__beg;
      while (__beg != __end && __i < __len 
             && __ctype.is(ctype_base::digit, __c)) 
        {
          __digits += __ctype.narrow(__c, 0);
          __c = *(++__beg);
          ++__i;
        }
      if (__i == __len)
        {
          int __value = atoi(__digits.c_str());
          if (__min <= __value && __value <= __max)
            __member = __value;
          else
            __testvalid = false;
        }
      else
        __testvalid = false;
      if (!__testvalid)
        __err |= ios_base::failbit;
    }

  // Assumptions:
  // All elements in __names are unique.
  template<typename _CharT, typename _InIter>
    void
    time_get<_CharT, _InIter>::
    _M_extract_name(iter_type& __beg, iter_type& __end, int& __member,
                    const _CharT** __names, size_t __indexlen, 
                    ios_base::iostate& __err) const
    {
      typedef char_traits<_CharT>               __traits_type;
      int* __matches = static_cast<int*>(__builtin_alloca(sizeof(int) * __indexlen));
      size_t __nmatches = 0;
      size_t __pos = 0;
      bool __testvalid = true;
      const char_type* __name;

      char_type __c = *__beg;
      // Look for initial matches.
      for (size_t __i1 = 0; __i1 < __indexlen; ++__i1)
        if (__c == __names[__i1][0])
          __matches[__nmatches++] = __i1;
      
      while(__nmatches > 1)
        {
          // Find smallest matching string.
          size_t __minlen = 10;
          for (size_t __i2 = 0; __i2 < __nmatches; ++__i2)
            __minlen = min(__minlen,
                           __traits_type::length(__names[__matches[__i2]]));
          
          if (__pos < __minlen && __beg != __end)
            {
              ++__pos;
              __c = *(++__beg);
              for (size_t __i3 = 0; __i3 < __nmatches; ++__i3)
                {
                  __name = __names[__matches[__i3]];
                  if (__name[__pos] != __c)
                    __matches[__i3] = __matches[--__nmatches];
                }
            }
          else
            break;
        }

      if (__nmatches == 1)
        {
          // Make sure found name is completely extracted.
          __name = __names[__matches[0]];
          const size_t __len = __traits_type::length(__name);
          while (__pos < __len && __beg != __end && __name[__pos] == *__beg)
            ++__beg, ++__pos;

          if (__len == __pos)
            __member = __matches[0];
          else
            __testvalid = false;
        }
      else
        __testvalid = false;
      if (!__testvalid)
        __err |= ios_base::failbit;
    }

  template<typename _CharT, typename _InIter>
    _InIter
    time_get<_CharT, _InIter>::
    do_get_time(iter_type __beg, iter_type __end, ios_base& __io,
                ios_base::iostate& __err, tm* __tm) const
    {
      _CharT __wcs[3];
      const char* __cs = "%X";
      locale __loc = __io.getloc();
      ctype<_CharT> const& __ctype = use_facet<ctype<_CharT> >(__loc);
      __ctype.widen(__cs, __cs + 3, __wcs);
      _M_extract_via_format(__beg, __end, __io, __err, __tm, __wcs);
      if (__beg == __end)
        __err |= ios_base::eofbit;
      return __beg;
    }

  template<typename _CharT, typename _InIter>
    _InIter
    time_get<_CharT, _InIter>::
    do_get_date(iter_type __beg, iter_type __end, ios_base& __io,
                ios_base::iostate& __err, tm* __tm) const
    {
      _CharT __wcs[3];
      const char* __cs = "%x";
      locale __loc = __io.getloc();
      ctype<_CharT> const& __ctype = use_facet<ctype<_CharT> >(__loc);
      __ctype.widen(__cs, __cs + 3, __wcs);
      _M_extract_via_format(__beg, __end, __io, __err, __tm, __wcs);
      if (__beg == __end)
        __err |= ios_base::eofbit;
      return __beg;
    }

  template<typename _CharT, typename _InIter>
    _InIter
    time_get<_CharT, _InIter>::
    do_get_weekday(iter_type __beg, iter_type __end, ios_base& __io, 
                   ios_base::iostate& __err, tm* __tm) const
    {
      typedef char_traits<_CharT>               __traits_type;
      locale __loc = __io.getloc();
      __timepunct<_CharT> const& __tp = use_facet<__timepunct<_CharT> >(__loc);
      const char_type*  __days[7];
      __tp._M_days_abbreviated(__days);
      int __tmpwday;
      _M_extract_name(__beg, __end, __tmpwday, __days, 7, __err);

      // Check to see if non-abbreviated name exists, and extract.
      // NB: Assumes both _M_days and _M_days_abbreviated organized in
      // exact same order, first to last, such that the resulting
      // __days array with the same index points to a day, and that
      // day's abbreviated form.
      // NB: Also assumes that an abbreviated name is a subset of the name. 
      if (!__err)
        {
          size_t __pos = __traits_type::length(__days[__tmpwday]);
          __tp._M_days(__days);
          const char_type* __name = __days[__tmpwday];
          if (__name[__pos] == *__beg)
            {
              // Extract the rest of it.
              const size_t __len = __traits_type::length(__name);
              while (__pos < __len && __beg != __end 
                     && __name[__pos] == *__beg)
                ++__beg, ++__pos;
              if (__len != __pos)
                __err |= ios_base::failbit;
            }
          if (!__err)
            __tm->tm_wday = __tmpwday;
        }
      if (__beg == __end)
        __err |= ios_base::eofbit;
      return __beg;
     }

  template<typename _CharT, typename _InIter>
    _InIter
    time_get<_CharT, _InIter>::
    do_get_monthname(iter_type __beg, iter_type __end,
                     ios_base& __io, ios_base::iostate& __err, tm* __tm) const
    {
      typedef char_traits<_CharT>               __traits_type;
      locale __loc = __io.getloc();
      __timepunct<_CharT> const& __tp = use_facet<__timepunct<_CharT> >(__loc);
      const char_type*  __months[12];
      __tp._M_months_abbreviated(__months);
      int __tmpmon;
      _M_extract_name(__beg, __end, __tmpmon, __months, 12, __err);

      // Check to see if non-abbreviated name exists, and extract.
      // NB: Assumes both _M_months and _M_months_abbreviated organized in
      // exact same order, first to last, such that the resulting
      // __months array with the same index points to a month, and that
      // month's abbreviated form.
      // NB: Also assumes that an abbreviated name is a subset of the name. 
      if (!__err)
        {
          size_t __pos = __traits_type::length(__months[__tmpmon]);
          __tp._M_months(__months);
          const char_type* __name = __months[__tmpmon];
          if (__name[__pos] == *__beg)
            {
              // Extract the rest of it.
              const size_t __len = __traits_type::length(__name);
              while (__pos < __len && __beg != __end 
                     && __name[__pos] == *__beg)
                ++__beg, ++__pos;
              if (__len != __pos)
                __err |= ios_base::failbit;
            }
          if (!__err)
            __tm->tm_mon = __tmpmon;
        }
 
      if (__beg == __end)
        __err |= ios_base::eofbit;
      return __beg;
    }

  template<typename _CharT, typename _InIter>
    _InIter
    time_get<_CharT, _InIter>::
    do_get_year(iter_type __beg, iter_type __end, ios_base& __io, 
                ios_base::iostate& __err, tm* __tm) const
    {
      locale __loc = __io.getloc();
      const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc); 

      char_type __c = *__beg;
      size_t __i = 0;
      string __digits;
      while (__i < 4 && __beg != __end && __ctype.is(ctype_base::digit, __c))
        {
          __digits += __ctype.narrow(__c, 0);
          __c = *(++__beg);
          ++__i;
        }
      if (__i == 2 || __i == 4)
        {
          long __l;
          this->__convert_to_v(__digits.c_str(), __l, __err, _S_c_locale);
          if (!(__err & ios_base::failbit) && __l <= INT_MAX)
            {
              __l = __i == 2 ? __l : __l - 1900; 
              __tm->tm_year = static_cast<int>(__l);
            }
        }
      else
        __err |= ios_base::failbit;
      if (__beg == __end)
        __err |= ios_base::eofbit;
      return __beg;
    }

  template<typename _CharT, typename _OutIter>
    _OutIter
    time_put<_CharT, _OutIter>::
    put(iter_type __s, ios_base& __io, char_type, const tm* __tm, 
        const _CharT* __beg, const _CharT* __end) const
    {
      locale __loc = __io.getloc();
      ctype<_CharT> const& __ctype = use_facet<ctype<_CharT> >(__loc);
      while (__beg != __end)
        {
          char __c = __ctype.narrow(*__beg, 0);
          ++__beg;
          if (__c == '%')
            {
              char __format;
              char __mod = 0;
              size_t __len = 1; 
              __c = __ctype.narrow(*__beg, 0);
              ++__beg;
              if (__c == 'E' || __c == 'O')
                {
                  __mod = __c;
                  __format = __ctype.narrow(*__beg, 0);
                  ++__beg;
                }
              else
                __format = __c;
              __s = this->do_put(__s, __io, char_type(), __tm, __format, 
                                 __mod);
            }
          else
            {
              *__s = __c;
              ++__s;
            }
        }
      return __s;
    }

  template<typename _CharT, typename _OutIter>
    _OutIter
    time_put<_CharT, _OutIter>::
    do_put(iter_type __s, ios_base& __io, char_type, const tm* __tm, 
           char __format, char __mod) const
    { 
      locale __loc = __io.getloc();
      ctype<_CharT> const& __ctype = use_facet<ctype<_CharT> >(__loc);
      __timepunct<_CharT> const& __tp = use_facet<__timepunct<_CharT> >(__loc);

      // NB: This size is arbitrary. Should this be a data member,
      // initialized at construction?
      const size_t __maxlen = 64;
      char_type* __res =
        static_cast<char_type*>(__builtin_alloca(sizeof(char_type) * __maxlen));

      // NB: In IEE 1003.1-200x, and perhaps other locale models, it
      // is possible that the format character will be longer than one
      // character. Possibilities include 'E' or 'O' followed by a
      // format character: if __mod is not the default argument, assume
      // it's a valid modifier.
      char_type __fmt[4];
      __fmt[0] = __ctype.widen('%'); 
      if (!__mod)
        {
          __fmt[1] = __format;
          __fmt[2] = char_type();
        }
      else
        {
          __fmt[1] = __mod;
          __fmt[2] = __format;
          __fmt[3] = char_type();
        }

      __tp._M_put(__res, __maxlen, __fmt, __tm);

      // Write resulting, fully-formatted string to output iterator.
      size_t __len = char_traits<char_type>::length(__res);
      for (size_t __i = 0; __i < __len; ++__i, ++__s)
        *__s = __res[__i];
      return __s;
    }


  // Generic version does nothing.
  template<typename _CharT>
    int
    collate<_CharT>::_M_compare(const _CharT*, const _CharT*) const
    { return 0; }

  // Generic version does nothing.
  template<typename _CharT>
    size_t
    collate<_CharT>::_M_transform(_CharT*, const _CharT*, size_t) const
    { return 0; }

  template<typename _CharT>
    int
    collate<_CharT>::
    do_compare(const _CharT* __lo1, const _CharT* __hi1, 
               const _CharT* __lo2, const _CharT* __hi2) const
    { 
      const string_type __one(__lo1, __hi1);
      const string_type __two(__lo2, __hi2);
      return _M_compare(__one.c_str(), __two.c_str());
    }

 template<typename _CharT>
    typename collate<_CharT>::string_type
    collate<_CharT>::
    do_transform(const _CharT* __lo, const _CharT* __hi) const
    {
      size_t __len = (__hi - __lo) * 2;
      // First try a buffer perhaps big enough.
      _CharT* __c =
        static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * __len));
      size_t __res = _M_transform(__c, __lo, __len);
      // If the buffer was not large enough, try again with the correct size.
      if (__res >= __len)
        {
          __c =
            static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * (__res + 1)));
          _M_transform(__c, __lo, __res + 1);
        }
      return string_type(__c);
    }

 template<typename _CharT>
    long
    collate<_CharT>::
    do_hash(const _CharT* __lo, const _CharT* __hi) const
    { 
      unsigned long __val = 0;
      for (; __lo < __hi; ++__lo)
        __val = *__lo + ((__val << 7) | 
                       (__val >> (numeric_limits<unsigned long>::digits - 7)));
      return static_cast<long>(__val);
    }

  // Convert string to numeric value of type _Tv and store results.  
  // NB: This is specialized for all required types, there is no
  // generic definition.
  template<typename _Tv>
    void
    __convert_to_v(const char* __in, _Tv& __out, ios_base::iostate& __err, 
                   const __c_locale& __cloc, int __base = 10);

  // Convert numeric value of type _Tv to string and return length of string.
  // If snprintf is available use it, otherwise fall back to the unsafe sprintf
  // which, in general, can be dangerous and should be avoided.
  template<typename _Tv>
    int
    __convert_from_v(char* __out, const int __size, const char* __fmt,
                     _Tv __v, const __c_locale&, int __prec = -1);

  // Construct correctly padded string, as per 22.2.2.2.2
  // Assumes 
  // __newlen > __oldlen
  // __news is allocated for __newlen size
  // Used by both num_put and ostream inserters: if __num,
  // internal-adjusted objects are padded according to the rules below
  // concerning 0[xX] and +-, otherwise, exactly as right-adjusted
  // ones are.

  // NB: Of the two parameters, _CharT can be deduced from the
  // function arguments. The other (_Traits) has to be explicitly specified.
  template<typename _CharT, typename _Traits>
    struct __pad
    {
      static void
      _S_pad(ios_base& __io, _CharT __fill, _CharT* __news, 
             const _CharT* __olds, const streamsize __newlen, 
             const streamsize __oldlen, const bool __num);
    };

  template<typename _CharT, typename _Traits>
    void 
    __pad<_CharT, _Traits>::_S_pad(ios_base& __io, _CharT __fill, 
                                   _CharT* __news, const _CharT* __olds, 
                                   const streamsize __newlen, 
                                   const streamsize __oldlen, const bool __num)
    {
      size_t __plen = static_cast<size_t>(__newlen - __oldlen);
      _CharT* __pads = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * __plen));
      _Traits::assign(__pads, __plen, __fill); 

      _CharT* __beg;
      _CharT* __end;
      size_t __mod = 0;
      size_t __beglen; //either __plen or __oldlen
      ios_base::fmtflags __adjust = __io.flags() & ios_base::adjustfield;

      if (__adjust == ios_base::left)
        {
          // Padding last.
          __beg = const_cast<_CharT*>(__olds);
          __beglen = __oldlen;
          __end = __pads;
        }
      else if (__adjust == ios_base::internal && __num)
        {
          // Pad after the sign, if there is one.
          // Pad after 0[xX], if there is one.
          // Who came up with these rules, anyway? Jeeze.
          locale __loc = __io.getloc();
          const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc); 
          const _CharT __minus = __ctype.widen('-');
          const _CharT __plus = __ctype.widen('+');
          bool __testsign = _Traits::eq(__olds[0], __minus)
                            || _Traits::eq(__olds[0], __plus);

          bool __testhex = _Traits::eq(__ctype.widen('0'), __olds[0]) 
                           && (_Traits::eq(__ctype.widen('x'), __olds[1]) 
                               || _Traits::eq(__ctype.widen('X'), __olds[1]));
          if (__testhex)
            {
              __news[0] = __olds[0]; 
              __news[1] = __olds[1];
              __mod += 2;
              __news += 2;
              __beg = __pads;
              __beglen = __plen;
              __end = const_cast<_CharT*>(__olds + __mod);
            }
          else if (__testsign)
            {
              _Traits::eq((__news[0] = __olds[0]), __plus) ? __plus : __minus;
              ++__mod;
              ++__news;
              __beg = __pads;
              __beglen = __plen;
              __end = const_cast<_CharT*>(__olds + __mod);
            }
          else
            {
              // Padding first.
              __beg = __pads;
              __beglen = __plen;
              __end = const_cast<_CharT*>(__olds);
            }
        }
      else
        {
          // Padding first.
          __beg = __pads;
          __beglen = __plen;
          __end = const_cast<_CharT*>(__olds);
        }
      _Traits::copy(__news, __beg, __beglen);
      _Traits::copy(__news + __beglen, __end, 
                          __newlen - __beglen - __mod);
    }

  // Used by both numeric and monetary facets.
  // Check to make sure that the __grouping_tmp string constructed in
  // money_get or num_get matches the canonical grouping for a given
  // locale.
  // __grouping_tmp is parsed L to R
  // 1,222,444 == __grouping_tmp of "/1/3/3"
  // __grouping is parsed R to L
  // 1,222,444 == __grouping of "/3" == "/3/3/3"
  template<typename _CharT>
    bool
    __verify_grouping(const basic_string<_CharT>& __grouping, 
                      basic_string<_CharT>& __grouping_tmp)
    {         
      int __i = 0;
      int __j = 0;
      const int __len = __grouping.size();
      const int __n = __grouping_tmp.size();
      bool __test = true;
      
      // Parsed number groupings have to match the
      // numpunct::grouping string exactly, starting at the
      // right-most point of the parsed sequence of elements ...
      while (__test && __i < __n - 1)
        for (__j = 0; __test && __j < __len && __i < __n - 1; ++__j,++__i)
          __test &= __grouping[__j] == __grouping_tmp[__n - __i - 1];
      // ... but the last parsed grouping can be <= numpunct
      // grouping.
      __j == __len ? __j = 0 : __j;
      __test &= __grouping[__j] >= __grouping_tmp[__n - __i - 1];
      return __test;
    }

  // Used by both numeric and monetary facets.
  // Inserts "group separator" characters into an array of characters.
  // It's recursive, one iteration per group.  It moves the characters
  // in the buffer this way: "xxxx12345" -> "12,345xxx".  Call this
  // only with __gbeg != __gend.
  template<typename _CharT>
    _CharT*
    __add_grouping(_CharT* __s, _CharT __sep,  
                   const char* __gbeg, const char* __gend, 
                   const _CharT* __first, const _CharT* __last)
    {
      if (__last - __first > *__gbeg)
        {
          __s = __add_grouping(__s,  __sep, 
                               (__gbeg + 1 == __gend ? __gbeg : __gbeg + 1),
                               __gend, __first, __last - *__gbeg);
          __first = __last - *__gbeg;
          *__s++ = __sep;
        }
      do
        *__s++ = *__first++;
      while (__first != __last);
      return __s;
    }

  // Inhibit implicit instantiations for required instantiations,
  // which are defined via explicit instantiations elsewhere.  
  // NB: This syntax is a GNU extension.
  extern template class moneypunct<char, false>;
  extern template class moneypunct<char, true>;
  extern template class moneypunct_byname<char, false>;
  extern template class moneypunct_byname<char, true>;
  extern template class money_get<char>;
  extern template class money_put<char>;
  extern template class numpunct<char>;
  extern template class numpunct_byname<char>;
  extern template class num_get<char>;
  extern template class num_put<char>; 
  extern template class __timepunct<char>;
  extern template class time_put<char>;
  extern template class time_put_byname<char>;
  extern template class time_get<char>;
  extern template class time_get_byname<char>;
  extern template class messages<char>;
  extern template class messages_byname<char>;
  extern template class ctype_byname<char>;
  extern template class codecvt_byname<char, char, mbstate_t>;
  extern template class collate<char>;
  extern template class collate_byname<char>;

  extern template
    const codecvt<char, char, mbstate_t>& 
    use_facet<codecvt<char, char, mbstate_t> >(const locale&);

  extern template
    const collate<char>& 
    use_facet<collate<char> >(const locale&);

  extern template
    const numpunct<char>& 
    use_facet<numpunct<char> >(const locale&);

  extern template 
    const num_put<char>& 
    use_facet<num_put<char> >(const locale&);

  extern template 
    const num_get<char>& 
    use_facet<num_get<char> >(const locale&);

  extern template
    const moneypunct<char, true>& 
    use_facet<moneypunct<char, true> >(const locale&);

  extern template
    const moneypunct<char, false>& 
    use_facet<moneypunct<char, false> >(const locale&);

  extern template 
    const money_put<char>& 
    use_facet<money_put<char> >(const locale&);

  extern template 
    const money_get<char>& 
    use_facet<money_get<char> >(const locale&);

  extern template
    const __timepunct<char>& 
    use_facet<__timepunct<char> >(const locale&);

  extern template 
    const time_put<char>& 
    use_facet<time_put<char> >(const locale&);

  extern template 
    const time_get<char>& 
    use_facet<time_get<char> >(const locale&);

  extern template 
    const messages<char>& 
    use_facet<messages<char> >(const locale&);

  extern template 
    bool
    has_facet<ctype<char> >(const locale&);

  extern template 
    bool
    has_facet<codecvt<char, char, mbstate_t> >(const locale&);

  extern template 
    bool
    has_facet<collate<char> >(const locale&);

  extern template 
    bool
    has_facet<numpunct<char> >(const locale&);

  extern template 
    bool
    has_facet<num_put<char> >(const locale&);

  extern template 
    bool
    has_facet<num_get<char> >(const locale&);

  extern template 
    bool
    has_facet<moneypunct<char> >(const locale&);

  extern template 
    bool
    has_facet<money_put<char> >(const locale&);

  extern template 
    bool
    has_facet<money_get<char> >(const locale&);

  extern template 
    bool
    has_facet<__timepunct<char> >(const locale&);

  extern template 
    bool
    has_facet<time_put<char> >(const locale&);

  extern template 
    bool
    has_facet<time_get<char> >(const locale&);

  extern template 
    bool
    has_facet<messages<char> >(const locale&);

#ifdef _GLIBCPP_USE_WCHAR_T
  extern template class moneypunct<wchar_t, false>;
  extern template class moneypunct<wchar_t, true>;
  extern template class moneypunct_byname<wchar_t, false>;
  extern template class moneypunct_byname<wchar_t, true>;
  extern template class money_get<wchar_t>;
  extern template class money_put<wchar_t>;
  extern template class numpunct<wchar_t>;
  extern template class numpunct_byname<wchar_t>;
  extern template class num_get<wchar_t>;
  extern template class num_put<wchar_t>;
  extern template class __timepunct<wchar_t>;
  extern template class time_put<wchar_t>;
  extern template class time_put_byname<wchar_t>;
  extern template class time_get<wchar_t>;
  extern template class time_get_byname<wchar_t>;
  extern template class messages<wchar_t>;
  extern template class messages_byname<wchar_t>;
  extern template class ctype_byname<wchar_t>;
  extern template class codecvt_byname<wchar_t, char, mbstate_t>;
  extern template class collate<wchar_t>;
  extern template class collate_byname<wchar_t>;

  extern template
    const codecvt<wchar_t, char, mbstate_t>& 
    use_facet<codecvt<wchar_t, char, mbstate_t> >(locale const&);

  extern template
    const collate<wchar_t>& 
    use_facet<collate<wchar_t> >(const locale&);

  extern template
    const numpunct<wchar_t>& 
    use_facet<numpunct<wchar_t> >(const locale&);

  extern template 
    const num_put<wchar_t>& 
    use_facet<num_put<wchar_t> >(const locale&);

  extern template 
    const num_get<wchar_t>& 
    use_facet<num_get<wchar_t> >(const locale&);

  extern template
    const moneypunct<wchar_t, true>& 
    use_facet<moneypunct<wchar_t, true> >(const locale&);

  extern template
    const moneypunct<wchar_t, false>& 
    use_facet<moneypunct<wchar_t, false> >(const locale&);
 
  extern template 
    const money_put<wchar_t>& 
    use_facet<money_put<wchar_t> >(const locale&);

  extern template 
    const money_get<wchar_t>& 
    use_facet<money_get<wchar_t> >(const locale&);

  extern template
    const __timepunct<wchar_t>& 
    use_facet<__timepunct<wchar_t> >(const locale&);

  extern template 
    const time_put<wchar_t>& 
    use_facet<time_put<wchar_t> >(const locale&);

  extern template 
    const time_get<wchar_t>& 
    use_facet<time_get<wchar_t> >(const locale&);

  extern template 
    const messages<wchar_t>& 
    use_facet<messages<wchar_t> >(const locale&);

 extern template 
    bool
    has_facet<ctype<wchar_t> >(const locale&);

  extern template 
    bool
    has_facet<codecvt<wchar_t, char, mbstate_t> >(const locale&);

  extern template 
    bool
    has_facet<collate<wchar_t> >(const locale&);

  extern template 
    bool
    has_facet<numpunct<wchar_t> >(const locale&);

  extern template 
    bool
    has_facet<num_put<wchar_t> >(const locale&);

  extern template 
    bool
    has_facet<num_get<wchar_t> >(const locale&);

  extern template 
    bool
    has_facet<moneypunct<wchar_t> >(const locale&);

  extern template 
    bool
    has_facet<money_put<wchar_t> >(const locale&);

  extern template 
    bool
    has_facet<money_get<wchar_t> >(const locale&);

  extern template 
    bool
    has_facet<__timepunct<wchar_t> >(const locale&);

  extern template 
    bool
    has_facet<time_put<wchar_t> >(const locale&);

  extern template 
    bool
    has_facet<time_get<wchar_t> >(const locale&);

  extern template 
    bool
    has_facet<messages<wchar_t> >(const locale&);
#endif
} // namespace std

#endif