locale_facets.tcc

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

// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
// 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// 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.

#ifndef _LOCALE_FACETS_TCC
#define _LOCALE_FACETS_TCC 1

#pragma GCC system_header

#include <limits>       // For numeric_limits
#include <typeinfo>     // For bad_cast.
#include <bits/streambuf_iterator.h>

namespace std
{
  template<typename _Facet>
    locale
    locale::combine(const locale& __other) const
    {
      _Impl* __tmp = new _Impl(*_M_impl, 1);
      try
    {
      __tmp->_M_replace_facet(__other._M_impl, &_Facet::id);
    }
      catch(...)
    {
      __tmp->_M_remove_reference();
      __throw_exception_again;
    }
      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>
    inline bool
    has_facet(const locale& __loc) throw()
    {
      const size_t __i = _Facet::id._M_id();
      const locale::facet** __facets = __loc._M_impl->_M_facets;
      return (__i < __loc._M_impl->_M_facets_size && __facets[__i]);
    }

  template<typename _Facet>
    inline const _Facet&
    use_facet(const locale& __loc)
    {
      const size_t __i = _Facet::id._M_id();
      const 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]);
    }

  // Routine to access a cache for the facet.  If the cache didn't
  // exist before, it gets constructed on the fly.
  template<typename _Facet>
    struct __use_cache
    {
      const _Facet*
      operator() (const locale& __loc) const;
    };

  // Specializations.
  template<typename _CharT>
    struct __use_cache<__numpunct_cache<_CharT> >
    {
      const __numpunct_cache<_CharT>*
      operator() (const locale& __loc) const
      {
    const size_t __i = numpunct<_CharT>::id._M_id();
    const locale::facet** __caches = __loc._M_impl->_M_caches;
    if (!__caches[__i])
      {
        __numpunct_cache<_CharT>* __tmp = NULL;
        try
          {
        __tmp = new __numpunct_cache<_CharT>;
        __tmp->_M_cache(__loc);
          }
        catch(...)
          {
        delete __tmp;
        __throw_exception_again;
          }
        __loc._M_impl->_M_install_cache(__tmp, __i);
      }
    return static_cast<const __numpunct_cache<_CharT>*>(__caches[__i]);
      }
    };

  template<typename _CharT, bool _Intl>
    struct __use_cache<__moneypunct_cache<_CharT, _Intl> >
    {
      const __moneypunct_cache<_CharT, _Intl>*
      operator() (const locale& __loc) const
      {
    const size_t __i = moneypunct<_CharT, _Intl>::id._M_id();
    const locale::facet** __caches = __loc._M_impl->_M_caches;
    if (!__caches[__i])
      {
        __moneypunct_cache<_CharT, _Intl>* __tmp = NULL;
        try
          {
        __tmp = new __moneypunct_cache<_CharT, _Intl>;
        __tmp->_M_cache(__loc);
          }
        catch(...)
          {
        delete __tmp;
        __throw_exception_again;
          }
        __loc._M_impl->_M_install_cache(__tmp, __i);
      }
    return static_cast<
      const __moneypunct_cache<_CharT, _Intl>*>(__caches[__i]);
      }
    };

  template<typename _CharT>
    void
    __numpunct_cache<_CharT>::_M_cache(const locale& __loc)
    {
      _M_allocated = true;

      const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc);

      _M_grouping_size = __np.grouping().size();
      char* __grouping = new char[_M_grouping_size];
      __np.grouping().copy(__grouping, _M_grouping_size);
      _M_grouping = __grouping;
      _M_use_grouping = (_M_grouping_size
             && static_cast<signed char>(__np.grouping()[0]) > 0);

      _M_truename_size = __np.truename().size();
      _CharT* __truename = new _CharT[_M_truename_size];
      __np.truename().copy(__truename, _M_truename_size);
      _M_truename = __truename;

      _M_falsename_size = __np.falsename().size();
      _CharT* __falsename = new _CharT[_M_falsename_size];
      __np.falsename().copy(__falsename, _M_falsename_size);
      _M_falsename = __falsename;

      _M_decimal_point = __np.decimal_point();
      _M_thousands_sep = __np.thousands_sep();

      const ctype<_CharT>& __ct = use_facet<ctype<_CharT> >(__loc);
      __ct.widen(__num_base::_S_atoms_out,
         __num_base::_S_atoms_out + __num_base::_S_oend, _M_atoms_out);
      __ct.widen(__num_base::_S_atoms_in,
         __num_base::_S_atoms_in + __num_base::_S_iend, _M_atoms_in);
    }

  template<typename _CharT, bool _Intl>
    void
    __moneypunct_cache<_CharT, _Intl>::_M_cache(const locale& __loc)
    {
      _M_allocated = true;

      const moneypunct<_CharT, _Intl>& __mp =
    use_facet<moneypunct<_CharT, _Intl> >(__loc);

      _M_grouping_size = __mp.grouping().size();
      char* __grouping = new char[_M_grouping_size];
      __mp.grouping().copy(__grouping, _M_grouping_size);
      _M_grouping = __grouping;
      _M_use_grouping = (_M_grouping_size
             && static_cast<signed char>(__mp.grouping()[0]) > 0);
      
      _M_decimal_point = __mp.decimal_point();
      _M_thousands_sep = __mp.thousands_sep();
      _M_frac_digits = __mp.frac_digits();
      
      _M_curr_symbol_size = __mp.curr_symbol().size();
      _CharT* __curr_symbol = new _CharT[_M_curr_symbol_size];
      __mp.curr_symbol().copy(__curr_symbol, _M_curr_symbol_size);
      _M_curr_symbol = __curr_symbol;
      
      _M_positive_sign_size = __mp.positive_sign().size();
      _CharT* __positive_sign = new _CharT[_M_positive_sign_size];
      __mp.positive_sign().copy(__positive_sign, _M_positive_sign_size);
      _M_positive_sign = __positive_sign;

      _M_negative_sign_size = __mp.negative_sign().size();
      _CharT* __negative_sign = new _CharT[_M_negative_sign_size];
      __mp.negative_sign().copy(__negative_sign, _M_negative_sign_size);
      _M_negative_sign = __negative_sign;
      
      _M_pos_format = __mp.pos_format();
      _M_neg_format = __mp.neg_format();

      const ctype<_CharT>& __ct = use_facet<ctype<_CharT> >(__loc);
      __ct.widen(money_base::_S_atoms,
         money_base::_S_atoms + money_base::_S_end, _M_atoms);
    }


  // 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"
  static bool
  __verify_grouping(const char* __grouping, size_t __grouping_size,
            const string& __grouping_tmp);

_GLIBCXX_BEGIN_LDBL_NAMESPACE

  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;
      typedef __numpunct_cache<_CharT>                  __cache_type;
      __use_cache<__cache_type> __uc;
      const locale& __loc = __io._M_getloc();
      const __cache_type* __lc = __uc(__loc);
      const _CharT* __lit = __lc->_M_atoms_in;
      char_type __c = char_type();

      // True if __beg becomes equal to __end.
      bool __testeof = __beg == __end;

      // First check for sign.
      if (!__testeof)
    {
      __c = *__beg;
      const bool __plus = __c == __lit[__num_base::_S_iplus];
      if ((__plus || __c == __lit[__num_base::_S_iminus])
          && !(__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
          && !(__c == __lc->_M_decimal_point))
        {
          __xtrc += __plus ? '+' : '-';
          if (++__beg != __end)
        __c = *__beg;
          else
        __testeof = true;
        }
    }

      // Next, look for leading zeros.
      bool __found_mantissa = false;
      int __sep_pos = 0;
      while (!__testeof)
    {
      if (__lc->_M_use_grouping && __c == __lc->_M_thousands_sep
          || __c == __lc->_M_decimal_point)
        break;
      else if (__c == __lit[__num_base::_S_izero])
        {
          if (!__found_mantissa)
        {
          __xtrc += '0';
          __found_mantissa = true;
        }
          ++__sep_pos;

          if (++__beg != __end)
        __c = *__beg;
          else
        __testeof = true;
        }
      else
        break;
    }

      // Only need acceptable digits for floating point numbers.
      bool __found_dec = false;
      bool __found_sci = false;
      string __found_grouping;
      if (__lc->_M_use_grouping)
    __found_grouping.reserve(32);
      const char_type* __q;
      const char_type* __lit_zero = __lit + __num_base::_S_izero;
      while (!__testeof)
        {
      // According to 22.2.2.1.2, p8-9, first look for thousands_sep
      // and decimal_point.
          if (__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
        {
          if (!__found_dec && !__found_sci)
        {
          // 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;
            }
          else
            {
              // NB: __convert_to_v will not assign __v and will
              // set the failbit.
              __xtrc.clear();
              break;
            }
        }
          else
        break;
            }
      else if (__c == __lc->_M_decimal_point)
        {
          if (!__found_dec && !__found_sci)
        {
          // If no grouping chars are seen, no grouping check
          // is applied. Therefore __found_grouping is adjusted
          // only if decimal_point comes after some thousands_sep.
          if (__found_grouping.size())
            __found_grouping += static_cast<char>(__sep_pos);
          __xtrc += '.';
          __found_dec = true;
        }
          else
        break;
        }
          else if ((__q = __traits_type::find(__lit_zero, 10, __c)))
        {
          __xtrc += __num_base::_S_atoms_in[__q - __lit];
          __found_mantissa = true;
          ++__sep_pos;
        }
      else if ((__c == __lit[__num_base::_S_ie] 
            || __c == __lit[__num_base::_S_iE])
           && !__found_sci && __found_mantissa)
        {
          // Scientific notation.
          if (__found_grouping.size() && !__found_dec)
        __found_grouping += static_cast<char>(__sep_pos);
          __xtrc += 'e';
          __found_sci = true;

          // Remove optional plus or minus sign, if they exist.
          if (++__beg != __end)
        {
          __c = *__beg;
          const bool __plus = __c == __lit[__num_base::_S_iplus];
          if ((__plus || __c == __lit[__num_base::_S_iminus])
              && !(__lc->_M_use_grouping
               && __c == __lc->_M_thousands_sep)
              && !(__c == __lc->_M_decimal_point))
            __xtrc += __plus ? '+' : '-';
          else
            continue;
        }
          else
        {
          __testeof = true;
          break;
        }
        }
      else
        // Not a valid input item.
        break;

      if (++__beg != __end)
        __c = *__beg;
      else
        __testeof = true;
        }

      // Digit grouping is checked. If grouping and found_grouping don't
      // match, then get very very upset, and set failbit.
      if (__found_grouping.size())
        {
          // Add the ending grouping if a decimal or 'e'/'E' wasn't found.
      if (!__found_dec && !__found_sci)
        __found_grouping += static_cast<char>(__sep_pos);

          if (!std::__verify_grouping(__lc->_M_grouping, 
                      __lc->_M_grouping_size,
                      __found_grouping))
        __err |= ios_base::failbit;
        }

      // Finish up.
      if (__testeof)
        __err |= ios_base::eofbit;
      return __beg;
    }

_GLIBCXX_END_LDBL_NAMESPACE

  template<typename _ValueT>
    struct __to_unsigned_type
    { typedef _ValueT __type; };

  template<>
    struct __to_unsigned_type<long>
    { typedef unsigned long __type; };

#ifdef _GLIBCXX_USE_LONG_LONG
  template<>
    struct __to_unsigned_type<long long>
    { typedef unsigned long long __type; };
#endif

_GLIBCXX_BEGIN_LDBL_NAMESPACE

  template<typename _CharT, typename _InIter>
    template<typename _ValueT>
      _InIter
      num_get<_CharT, _InIter>::
      _M_extract_int(_InIter __beg, _InIter __end, ios_base& __io,
             ios_base::iostate& __err, _ValueT& __v) const
      {
        typedef char_traits<_CharT>              __traits_type;
    typedef typename __to_unsigned_type<_ValueT>::__type __unsigned_type;
    typedef __numpunct_cache<_CharT>                     __cache_type;
    __use_cache<__cache_type> __uc;
    const locale& __loc = __io._M_getloc();
    const __cache_type* __lc = __uc(__loc);
    const _CharT* __lit = __lc->_M_atoms_in;
    char_type __c = char_type();

    // NB: Iff __basefield == 0, __base can change based on contents.
    const ios_base::fmtflags __basefield = __io.flags()
                                           & ios_base::basefield;
    const bool __oct = __basefield == ios_base::oct;
    int __base = __oct ? 8 : (__basefield == ios_base::hex ? 16 : 10);

    // True if __beg becomes equal to __end.
    bool __testeof = __beg == __end;

    // First check for sign.
    bool __negative = false;
    if (!__testeof)
      {
        __c = *__beg;
        if (numeric_limits<_ValueT>::is_signed)
          __negative = __c == __lit[__num_base::_S_iminus];
        if ((__negative || __c == __lit[__num_base::_S_iplus])
        && !(__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
        && !(__c == __lc->_M_decimal_point))
          {
        if (++__beg != __end)
          __c = *__beg;
        else
          __testeof = true;
          }
      }

    // Next, look for leading zeros and check required digits
    // for base formats.
    bool __found_zero = false;
    int __sep_pos = 0;
    while (!__testeof)
      {
        if (__lc->_M_use_grouping && __c == __lc->_M_thousands_sep
        || __c == __lc->_M_decimal_point)
          break;
        else if (__c == __lit[__num_base::_S_izero] 
             && (!__found_zero || __base == 10))
          {
        __found_zero = true;
        ++__sep_pos;
        if (__basefield == 0)
          __base = 8;
        if (__base == 8)
          __sep_pos = 0;
          }
        else if (__found_zero
             && (__c == __lit[__num_base::_S_ix]
             || __c == __lit[__num_base::_S_iX]))
          {
        if (__basefield == 0)
          __base = 16;
        if (__base == 16)
          {
            __found_zero = false;
            __sep_pos = 0;
          }
        else
          break;
          }
        else
          break;

        if (++__beg != __end)
          {
        __c = *__beg;
        if (!__found_zero)
          break;
          }
        else
          __testeof = true;
      }
    
    // At this point, base is determined. If not hex, only allow
    // base digits as valid input.
    const size_t __len = (__base == 16 ? __num_base::_S_iend
                  - __num_base::_S_izero : __base);

    // Extract.
    string __found_grouping;
    if (__lc->_M_use_grouping)
      __found_grouping.reserve(32);
    bool __testfail = false;
    const __unsigned_type __max = __negative ?
      -numeric_limits<_ValueT>::min() : numeric_limits<_ValueT>::max();
    const __unsigned_type __smax = __max / __base;
    __unsigned_type __result = 0;
    const char_type* __q;
    const char_type* __lit_zero = __lit + __num_base::_S_izero;
    while (!__testeof)
      {
        // According to 22.2.2.1.2, p8-9, first look for thousands_sep
        // and decimal_point.
        if (__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
          {
        // 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;
          }
        else
          {
            __testfail = true;
            break;
          }
          }
        else if (__c == __lc->_M_decimal_point)
          break;
        else if ((__q = __traits_type::find(__lit_zero, __len, __c)))
          {
        int __digit = __q - __lit_zero;
        if (__digit > 15)
          __digit -= 6;
        if (__result > __smax)
          __testfail = true;
        else
          {
            __result *= __base;
            __testfail |= __result > __max - __digit;
            __result += __digit;
            ++__sep_pos;
          }
          }
        else
          // Not a valid input item.          
          break;
        
        if (++__beg != __end)
          __c = *__beg;
        else
          __testeof = true;
      }

    // Digit grouping is checked. If grouping and found_grouping don't
    // match, then get very very upset, and set failbit.
    if (__found_grouping.size())
      {
        // Add the ending grouping.
        __found_grouping += static_cast<char>(__sep_pos);

        if (!std::__verify_grouping(__lc->_M_grouping,
                    __lc->_M_grouping_size,
                    __found_grouping))
          __err |= ios_base::failbit;
      }

    if (!__testfail && (__sep_pos || __found_zero 
                || __found_grouping.size()))
      __v = __negative ? -__result : __result;
    else
      __err |= ios_base::failbit;

    if (__testeof)
      __err |= ios_base::eofbit;
    return __beg;
      }

  // _GLIBCXX_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
    {
      if (!(__io.flags() & ios_base::boolalpha))
        {
      // Parse bool values as long.
          // NB: We can't just call do_get(long) here, as it might
          // refer to a derived class.
      long __l = -1;
          __beg = _M_extract_int(__beg, __end, __io, __err, __l);
      if (__l == 0 || __l == 1)
        __v = __l;
      else
            __err |= ios_base::failbit;
        }
      else
        {
      // Parse bool values as alphanumeric.
      typedef __numpunct_cache<_CharT>              __cache_type;
      __use_cache<__cache_type> __uc;
      const locale& __loc = __io._M_getloc();
      const __cache_type* __lc = __uc(__loc);

      bool __testf = true;
      bool __testt = true;
      size_t __n;
      bool __testeof = __beg == __end;
          for (__n = 0; !__testeof; ++__n)
            {
          const char_type __c = *__beg;

          if (__testf)
        if (__n < __lc->_M_falsename_size)
          __testf = __c == __lc->_M_falsename[__n];
        else
          break;

          if (__testt)
        if (__n < __lc->_M_truename_size)
          __testt = __c == __lc->_M_truename[__n];
        else
          break;

          if (!__testf && !__testt)
        break;
          
          if (++__beg == __end)
        __testeof = true;
            }
      if (__testf && __n == __lc->_M_falsename_size)
        __v = 0;
      else if (__testt && __n == __lc->_M_truename_size)
        __v = 1;
      else
        __err |= ios_base::failbit;

          if (__testeof)
            __err |= ios_base::eofbit;
        }
      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& __v) const
    { return _M_extract_int(__beg, __end, __io, __err, __v); }

  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
    { return _M_extract_int(__beg, __end, __io, __err, __v); }

  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
    { return _M_extract_int(__beg, __end, __io, __err, __v); }

  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
    { return _M_extract_int(__beg, __end, __io, __err, __v); }

#ifdef _GLIBCXX_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
    { return _M_extract_int(__beg, __end, __io, __err, __v); }

  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
    { return _M_extract_int(__beg, __end, __io, __err, __v); }
#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);
      std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_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);
      std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_c_locale());
      return __beg;
    }

#if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
  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);
      std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_c_locale());
      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 double& __v) const
    {
      string __xtrc;
      __xtrc.reserve(32);
      __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
      std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_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;
      const fmtflags __fmt = __io.flags();
      __io.flags(__fmt & ~ios_base::basefield | ios_base::hex);

      unsigned long __ul;
      __beg = _M_extract_int(__beg, __end, __io, __err, __ul);

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

      if (!(__err & ios_base::failbit))
    __v = reinterpret_cast<void*>(__ul);
      return __beg;
    }

  // For use by integer and floating-point types after they have been
  // converted into a char_type string.
  template<typename _CharT, typename _OutIter>
    void
    num_put<_CharT, _OutIter>::
    _M_pad(_CharT __fill, streamsize __w, ios_base& __io,
       _CharT* __new, const _CharT* __cs, int& __len) const
    {
      // [22.2.2.2.2] Stage 3.
      // If necessary, pad.
      __pad<_CharT, char_traits<_CharT> >::_S_pad(__io, __fill, __new, __cs,
                          __w, __len, true);
      __len = static_cast<int>(__w);
    }

_GLIBCXX_END_LDBL_NAMESPACE

  // Forwarding functions to peel signed from unsigned integer types and
  // either cast or compute the absolute value for the former, depending
  // on __basefield.
  template<typename _CharT>
    inline int
    __int_to_char(_CharT* __bufend, long __v, const _CharT* __lit,
          ios_base::fmtflags __flags)
    {
      unsigned long __ul = __v;
      const ios_base::fmtflags __basefield = __flags & ios_base::basefield;
      if (__builtin_expect(__basefield != ios_base::oct
               && __basefield != ios_base::hex, true))
    __ul = __v < 0 ? -__v : __ul;
      return __int_to_char(__bufend, __ul, __lit, __flags, false);
    }

  template<typename _CharT>
    inline int
    __int_to_char(_CharT* __bufend, unsigned long __v, const _CharT* __lit,
          ios_base::fmtflags __flags)
    { return __int_to_char(__bufend, __v, __lit, __flags, false); }

#ifdef _GLIBCXX_USE_LONG_LONG
  template<typename _CharT>
    inline int
    __int_to_char(_CharT* __bufend, long long __v, const _CharT* __lit,
          ios_base::fmtflags __flags)
    {
      unsigned long long __ull = __v;
      const ios_base::fmtflags __basefield = __flags & ios_base::basefield;
      if (__builtin_expect(__basefield != ios_base::oct
               && __basefield != ios_base::hex, true))
    __ull = __v < 0 ? -__v : __ull;
      return __int_to_char(__bufend, __ull, __lit, __flags, false);
    }

  template<typename _CharT>
    inline int
    __int_to_char(_CharT* __bufend, unsigned long long __v, 
          const _CharT* __lit, ios_base::fmtflags __flags)
    { return __int_to_char(__bufend, __v, __lit, __flags, false); }
#endif

  // N.B. The last argument is currently unused (see libstdc++/20914).
  template<typename _CharT, typename _ValueT>
    int
    __int_to_char(_CharT* __bufend, _ValueT __v, const _CharT* __lit,
          ios_base::fmtflags __flags, bool)
    {
      const ios_base::fmtflags __basefield = __flags & ios_base::basefield;
      _CharT* __buf = __bufend;

      if (__builtin_expect(__basefield != ios_base::oct
               && __basefield != ios_base::hex, true))
    {
      // Decimal.
      do
        {
          *--__buf = __lit[(__v % 10) + __num_base::_S_odigits];
          __v /= 10;
        }
      while (__v != 0);
    }
      else if (__basefield == ios_base::oct)
    {
      // Octal.
      do
        {
          *--__buf = __lit[(__v & 0x7) + __num_base::_S_odigits];
          __v >>= 3;
        }
      while (__v != 0);
    }
      else
    {
      // Hex.
      const bool __uppercase = __flags & ios_base::uppercase;
      const int __case_offset = __uppercase ? __num_base::_S_oudigits
                                            : __num_base::_S_odigits;
      do
        {
          *--__buf = __lit[(__v & 0xf) + __case_offset];
          __v >>= 4;
        }
      while (__v != 0);
    }
      return __bufend - __buf;
    }

_GLIBCXX_BEGIN_LDBL_NAMESPACE

  template<typename _CharT, typename _OutIter>
    void
    num_put<_CharT, _OutIter>::
    _M_group_int(const char* __grouping, size_t __grouping_size, _CharT __sep,
         ios_base&, _CharT* __new, _CharT* __cs, int& __len) const
    {
      _CharT* __p = std::__add_grouping(__new, __sep, __grouping,
                    __grouping_size, __cs, __cs + __len);
      __len = __p - __new;
    }
  
  template<typename _CharT, typename _OutIter>
    template<typename _ValueT>
      _OutIter
      num_put<_CharT, _OutIter>::
      _M_insert_int(_OutIter __s, ios_base& __io, _CharT __fill,
            _ValueT __v) const
      {
    typedef __numpunct_cache<_CharT>            __cache_type;
    __use_cache<__cache_type> __uc;
    const locale& __loc = __io._M_getloc();
    const __cache_type* __lc = __uc(__loc);
    const _CharT* __lit = __lc->_M_atoms_out;
    const ios_base::fmtflags __flags = __io.flags();

    // Long enough to hold hex, dec, and octal representations.
    const int __ilen = 5 * sizeof(_ValueT);
    _CharT* __cs = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
                                 * __ilen));

    // [22.2.2.2.2] Stage 1, numeric conversion to character.
    // Result is returned right-justified in the buffer.
    int __len = __int_to_char(__cs + __ilen, __v, __lit, __flags);
    __cs += __ilen - __len;

    // Add grouping, if necessary.
    if (__lc->_M_use_grouping)
      {
        // Grouping can add (almost) as many separators as the number
        // of digits + space is reserved for numeric base or sign.
        _CharT* __cs2 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
                                  * (__len + 1)
                                  * 2));
        _M_group_int(__lc->_M_grouping, __lc->_M_grouping_size,
             __lc->_M_thousands_sep, __io, __cs2 + 2, __cs, __len);
        __cs = __cs2 + 2;
      }

    // Complete Stage 1, prepend numeric base or sign.
    const ios_base::fmtflags __basefield = __flags & ios_base::basefield;
    if (__builtin_expect(__basefield != ios_base::oct
                 && __basefield != ios_base::hex, true))
      {
        // Decimal.
        if (__v > 0)
          {
        if (__flags & ios_base::showpos
            && numeric_limits<_ValueT>::is_signed)
          *--__cs = __lit[__num_base::_S_oplus], ++__len;
          }
        else if (__v)
          *--__cs = __lit[__num_base::_S_ominus], ++__len;
      }
    else if (__flags & ios_base::showbase && __v)
      {
        if (__basefield == ios_base::oct)
          *--__cs = __lit[__num_base::_S_odigits], ++__len;
        else
          {
        // 'x' or 'X'
        const bool __uppercase = __flags & ios_base::uppercase;
        *--__cs = __lit[__num_base::_S_ox + __uppercase];
        // '0'
        *--__cs = __lit[__num_base::_S_odigits];
        __len += 2;
          }
      }

    // Pad.
    const streamsize __w = __io.width();
    if (__w > static_cast<streamsize>(__len))
      {
        _CharT* __cs3 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
                                  * __w));
        _M_pad(__fill, __w, __io, __cs3, __cs, __len);
        __cs = __cs3;
      }
    __io.width(0);

    // [22.2.2.2.2] Stage 4.
    // Write resulting, fully-formatted string to output iterator.
    return std::__write(__s, __cs, __len);
      }

  template<typename _CharT, typename _OutIter>
    void
    num_put<_CharT, _OutIter>::
    _M_group_float(const char* __grouping, size_t __grouping_size,
           _CharT __sep, const _CharT* __p, _CharT* __new,
           _CharT* __cs, int& __len) const
    {
      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 282. What types does numpunct grouping refer to?
      // Add grouping, if necessary.
      const int __declen = __p ? __p - __cs : __len;
      _CharT* __p2 = std::__add_grouping(__new, __sep, __grouping,
                     __grouping_size,
                     __cs, __cs + __declen);

      // Tack on decimal part.
      int __newlen = __p2 - __new;
      if (__p)
    {
      char_traits<_CharT>::copy(__p2, __p, __len - __declen);
      __newlen += __len - __declen;
    }
      __len = __newlen;
    }

  // The following code uses snprintf (or sprintf(), when
  // _GLIBCXX_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_insert_float(_OutIter __s, ios_base& __io, _CharT __fill, char __mod,
               _ValueT __v) const
      {
    typedef __numpunct_cache<_CharT>                __cache_type;
    __use_cache<__cache_type> __uc;
    const locale& __loc = __io._M_getloc();
    const __cache_type* __lc = __uc(__loc);

    // Use default precision if out of range.
    streamsize __prec = __io.precision();
    if (__prec < static_cast<streamsize>(0))
      __prec = static_cast<streamsize>(6);

    const int __max_digits = numeric_limits<_ValueT>::digits10;

    // [22.2.2.2.2] Stage 1, numeric conversion to character.
    int __len;
    // Long enough for the max format spec.
    char __fbuf[16];

#ifdef _GLIBCXX_USE_C99
    // First try a buffer perhaps big enough (most probably sufficient
    // for non-ios_base::fixed outputs)
    int __cs_size = __max_digits * 3;
    char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));

    __num_base::_S_format_float(__io, __fbuf, __mod);
    __len = std::__convert_from_v(__cs, __cs_size, __fbuf, __v,
                      _S_get_c_locale(), __prec);

    // 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 = std::__convert_from_v(__cs, __cs_size, __fbuf, __v,
                      _S_get_c_locale(), __prec);
      }
#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;

    // The size of the output string is computed as follows.
    // ios_base::fixed outputs may need up to __max_exp + 1 chars
    // for the integer part + __prec chars for the fractional part
    // + 3 chars for sign, decimal point, '\0'. On the other hand,
    // for non-fixed outputs __max_digits * 2 + __prec chars are
    // largely sufficient.
    const int __cs_size = __fixed ? __max_exp + __prec + 4
                                  : __max_digits * 2 + __prec;
    char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));

    __num_base::_S_format_float(__io, __fbuf, __mod);
    __len = std::__convert_from_v(__cs, 0, __fbuf, __v,
                      _S_get_c_locale(), __prec);
#endif

    // [22.2.2.2.2] Stage 2, convert to char_type, using correct
    // numpunct.decimal_point() values for '.' and adding grouping.
    const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
    
    _CharT* __ws = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
                                 * __len));
    __ctype.widen(__cs, __cs + __len, __ws);
    
    // Replace decimal point.
    const _CharT __cdec = __ctype.widen('.');
    const _CharT __dec = __lc->_M_decimal_point;
    const _CharT* __p = char_traits<_CharT>::find(__ws, __len, __cdec);
    if (__p)
      __ws[__p - __ws] = __dec;
    
    // Add grouping, if necessary.
    // N.B. Make sure to not group things like 2e20, i.e., no decimal
    // point, scientific notation.
    if (__lc->_M_use_grouping
        && (__p || __len < 3 || (__cs[1] <= '9' && __cs[2] <= '9'
                     && __cs[1] >= '0' && __cs[2] >= '0')))
      {
        // 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));
        
        streamsize __off = 0;
        if (__cs[0] == '-' || __cs[0] == '+')
          {
        __off = 1;
        __ws2[0] = __ws[0];
        __len -= 1;
          }
        
        _M_group_float(__lc->_M_grouping, __lc->_M_grouping_size,
               __lc->_M_thousands_sep, __p, __ws2 + __off,
               __ws + __off, __len);
        __len += __off;
        
        __ws = __ws2;
      }

    // Pad.
    const streamsize __w = __io.width();
    if (__w > static_cast<streamsize>(__len))
      {
        _CharT* __ws3 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
                                  * __w));
        _M_pad(__fill, __w, __io, __ws3, __ws, __len);
        __ws = __ws3;
      }
    __io.width(0);
    
    // [22.2.2.2.2] Stage 4.
    // Write resulting, fully-formatted string to output iterator.
    return std::__write(__s, __ws, __len);
      }
  
  template<typename _CharT, typename _OutIter>
    _OutIter
    num_put<_CharT, _OutIter>::
    do_put(iter_type __s, ios_base& __io, char_type __fill, bool __v) const
    {
      const ios_base::fmtflags __flags = __io.flags();
      if ((__flags & ios_base::boolalpha) == 0)
        {
          const long __l = __v;
          __s = _M_insert_int(__s, __io, __fill, __l);
        }
      else
        {
      typedef __numpunct_cache<_CharT>              __cache_type;
      __use_cache<__cache_type> __uc;
      const locale& __loc = __io._M_getloc();
      const __cache_type* __lc = __uc(__loc);

      const _CharT* __name = __v ? __lc->_M_truename
                                 : __lc->_M_falsename;
      int __len = __v ? __lc->_M_truename_size
                      : __lc->_M_falsename_size;

      const streamsize __w = __io.width();
      if (__w > static_cast<streamsize>(__len))
        {
          _CharT* __cs
        = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
                            * __w));
          _M_pad(__fill, __w, __io, __cs, __name, __len);
          __name = __cs;
        }
      __io.width(0);
      __s = std::__write(__s, __name, __len);
    }
      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_insert_int(__s, __io, __fill, __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_insert_int(__s, __io, __fill, __v); }

#ifdef _GLIBCXX_USE_LONG_LONG
  template<typename _CharT, typename _OutIter>
    _OutIter
    num_put<_CharT, _OutIter>::
    do_put(iter_type __s, ios_base& __io, char_type __fill, long long __v) const
    { return _M_insert_int(__s, __io, __fill, __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_insert_int(__s, __io, __fill, __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_insert_float(__s, __io, __fill, char(), __v); }

#if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
  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_insert_float(__s, __io, __fill, char(), __v); }
#endif

  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_insert_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
    {
      const ios_base::fmtflags __flags = __io.flags();
      const ios_base::fmtflags __fmt = ~(ios_base::basefield
                     | ios_base::uppercase
                     | ios_base::internal);
      __io.flags(__flags & __fmt | (ios_base::hex | ios_base::showbase));

      __s = _M_insert_int(__s, __io, __fill,
              reinterpret_cast<unsigned long>(__v));
      __io.flags(__flags);
      return __s;
    }

  template<typename _CharT, typename _InIter>
    template<bool _Intl>
      _InIter
      money_get<_CharT, _InIter>::
      _M_extract(iter_type __beg, iter_type __end, ios_base& __io,
         ios_base::iostate& __err, string& __units) const
      {
    typedef char_traits<_CharT>           __traits_type;
    typedef typename string_type::size_type           size_type;    
    typedef money_base::part              part;
    typedef __moneypunct_cache<_CharT, _Intl>         __cache_type;
    
    const locale& __loc = __io._M_getloc();
    const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);

    __use_cache<__cache_type> __uc;
    const __cache_type* __lc = __uc(__loc);
    const char_type* __lit = __lc->_M_atoms;

    // Deduced sign.
    bool __negative = false;
    // Sign size.
    size_type __sign_size = 0;
    // True if sign is mandatory.
    const bool __mandatory_sign = (__lc->_M_positive_sign_size
                       && __lc->_M_negative_sign_size);
    // String of grouping info from thousands_sep plucked from __units.
    string __grouping_tmp;
    if (__lc->_M_use_grouping)
      __grouping_tmp.reserve(32);
    // Last position before the decimal point.
    int __last_pos = 0;
    // Separator positions, then, possibly, fractional digits.
    int __n = 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 __res;
    __res.reserve(32);

    const char_type* __lit_zero = __lit + money_base::_S_zero;
    const money_base::pattern __p = __lc->_M_neg_format;
    for (int __i = 0; __i < 4 && __testvalid; ++__i)
      {
        const part __which = static_cast<part>(__p.field[__i]);
        switch (__which)
          {
          case money_base::symbol:
        // According to 22.2.6.1.2, p2, symbol is required
        // if (__io.flags() & ios_base::showbase), otherwise
        // is optional and consumed only if other characters
        // are needed to complete the format.
        if (__io.flags() & ios_base::showbase || __sign_size > 1
            || __i == 0
            || (__i == 1 && (__mandatory_sign
                     || (static_cast<part>(__p.field[0])
                     == money_base::sign)
                     || (static_cast<part>(__p.field[2])
                     == money_base::space)))
            || (__i == 2 && ((static_cast<part>(__p.field[3])
                      == money_base::value)
                     || __mandatory_sign
                     && (static_cast<part>(__p.field[3])
                     == money_base::sign))))
          {
            const size_type __len = __lc->_M_curr_symbol_size;
            size_type __j = 0;
            for (; __beg != __end && __j < __len
               && *__beg == __lc->_M_curr_symbol[__j];
             ++__beg, ++__j);
            if (__j != __len
            && (__j || __io.flags() & ios_base::showbase))
              __testvalid = false;
          }
        break;
          case money_base::sign:
        // Sign might not exist, or be more than one character long.
        if (__lc->_M_positive_sign_size && __beg != __end
            && *__beg == __lc->_M_positive_sign[0])
          {
            __sign_size = __lc->_M_positive_sign_size;
            ++__beg;
          }
        else if (__lc->_M_negative_sign_size && __beg != __end
             && *__beg == __lc->_M_negative_sign[0])
          {
            __negative = true;
            __sign_size = __lc->_M_negative_sign_size;
            ++__beg;
          }
        else if (__lc->_M_positive_sign_size
             && !__lc->_M_negative_sign_size)
          // "... if no sign is detected, the result is given the sign
          // that corresponds to the source of the empty string"
          __negative = true;
        else if (__mandatory_sign)
          __testvalid = false;
        break;
          case money_base::value:
        // Extract digits, remove and stash away the
        // grouping of found thousands separators.
        for (; __beg != __end; ++__beg)
          {
            const char_type __c = *__beg;
            const char_type* __q = __traits_type::find(__lit_zero, 
                                   10, __c);
            if (__q != 0)
              {
            __res += money_base::_S_atoms[__q - __lit];
            ++__n;
              }
            else if (__c == __lc->_M_decimal_point 
                 && !__testdecfound)
              {
            __last_pos = __n;
            __n = 0;
            __testdecfound = true;
              }
            else if (__lc->_M_use_grouping
                 && __c == __lc->_M_thousands_sep
                 && !__testdecfound)
              {
            if (__n)
              {
                // Mark position for later analysis.
                __grouping_tmp += static_cast<char>(__n);
                __n = 0;
              }
            else
              {
                __testvalid = false;
                break;
              }
              }
            else
              break;
          }
        if (__res.empty())
          __testvalid = false;
        break;
          case money_base::space:
        // At least one space is required.
        if (__beg != __end && __ctype.is(ctype_base::space, *__beg))
          ++__beg;
        else
          __testvalid = false;
          case money_base::none:
        // Only if not at the end of the pattern.
        if (__i != 3)
          for (; __beg != __end
             && __ctype.is(ctype_base::space, *__beg); ++__beg);
        break;
          }
      }

    // Need to get the rest of the sign characters, if they exist.
    if (__sign_size > 1 && __testvalid)
      {
        const char_type* __sign = __negative ? __lc->_M_negative_sign
                                             : __lc->_M_positive_sign;
        size_type __i = 1;
        for (; __beg != __end && __i < __sign_size
           && *__beg == __sign[__i]; ++__beg, ++__i);
        
        if (__i != __sign_size)
          __testvalid = false;
      }

    if (__testvalid)
      {
        // Strip leading zeros.
        if (__res.size() > 1)
          {
        const size_type __first = __res.find_first_not_of('0');
        const bool __only_zeros = __first == string::npos;
        if (__first)
          __res.erase(0, __only_zeros ? __res.size() - 1 : __first);
          }

        // 22.2.6.1.2, p4
        if (__negative && __res[0] != '0')
          __res.insert(__res.begin(), '-');
        
        // Test for grouping fidelity.
        if (__grouping_tmp.size())
          {
        // Add the ending grouping.
        __grouping_tmp += static_cast<char>(__testdecfound ? __last_pos
                                           : __n);
        if (!std::__verify_grouping(__lc->_M_grouping,
                        __lc->_M_grouping_size,
                        __grouping_tmp))
          __err |= ios_base::failbit;
          }
        
        // Iff not enough digits were supplied after the decimal-point.
        if (__testdecfound && __lc->_M_frac_digits > 0
        && __n != __lc->_M_frac_digits)
          __testvalid = false;
      }
    
    // Iff valid sequence is not recognized.
    if (!__testvalid)
      __err |= ios_base::failbit;
    else
      __units.swap(__res);
    
    // Iff no more characters are available.
    if (__beg == __end)
      __err |= ios_base::eofbit;
    return __beg;
      }

#if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
  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, double& __units) const
    {
      string __str;
      if (__intl)
    __beg = _M_extract<true>(__beg, __end, __io, __err, __str);
      else
    __beg = _M_extract<false>(__beg, __end, __io, __err, __str);
      std::__convert_to_v(__str.c_str(), __units, __err, _S_get_c_locale());
      return __beg;
    }
#endif

  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 __str;
      if (__intl)
    __beg = _M_extract<true>(__beg, __end, __io, __err, __str);
      else
    __beg = _M_extract<false>(__beg, __end, __io, __err, __str);
      std::__convert_to_v(__str.c_str(), __units, __err, _S_get_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
    {
      typedef typename string::size_type                  size_type;

      const locale& __loc = __io._M_getloc();
      const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);

      string __str;
      const iter_type __ret = __intl ? _M_extract<true>(__beg, __end, __io,
                            __err, __str)
                                 : _M_extract<false>(__beg, __end, __io,
                             __err, __str);
      const size_type __len = __str.size();
      if (__len)
    {
      _CharT* __ws = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
                                   * __len));
      __ctype.widen(__str.data(), __str.data() + __len, __ws);
      __units.assign(__ws, __len);
    }

      return __ret;
    }

  template<typename _CharT, typename _OutIter>
    template<bool _Intl>
      _OutIter
      money_put<_CharT, _OutIter>::
      _M_insert(iter_type __s, ios_base& __io, char_type __fill,
        const string_type& __digits) const
      {
    typedef typename string_type::size_type           size_type;
    typedef money_base::part                          part;
    typedef __moneypunct_cache<_CharT, _Intl>         __cache_type;
      
    const locale& __loc = __io._M_getloc();
    const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);

    __use_cache<__cache_type> __uc;
    const __cache_type* __lc = __uc(__loc);
    const char_type* __lit = __lc->_M_atoms;

    // 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();

    money_base::pattern __p;
    const char_type* __sign;
    size_type __sign_size;
    if (!(*__beg == __lit[money_base::_S_minus]))
      {
        __p = __lc->_M_pos_format;
        __sign = __lc->_M_positive_sign;
        __sign_size = __lc->_M_positive_sign_size;
      }
    else
      {
        __p = __lc->_M_neg_format;
        __sign = __lc->_M_negative_sign;
        __sign_size = __lc->_M_negative_sign_size;
        if (__digits.size())
          ++__beg;
      }
       
    // Look for valid numbers in the ctype facet within input digits.
    size_type __len = __ctype.scan_not(ctype_base::digit, __beg,
                       __beg + __digits.size()) - __beg;
    if (__len)
      {
        // 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 __value;
        __value.reserve(2 * __len);

        // Add thousands separators to non-decimal digits, per
        // grouping rules.
        int __paddec = __len - __lc->_M_frac_digits;
        if (__paddec > 0)
          {
        if (__lc->_M_frac_digits < 0)
          __paddec = __len;
        if (__lc->_M_grouping_size)
          {
            _CharT* __ws =
              static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
                                * 2 * __len));
            _CharT* __ws_end =
              std::__add_grouping(__ws, __lc->_M_thousands_sep,
                      __lc->_M_grouping,
                      __lc->_M_grouping_size,
                      __beg, __beg + __paddec);
            __value.assign(__ws, __ws_end - __ws);
          }
        else
          __value.assign(__beg, __paddec);
          }

        // Deal with decimal point, decimal digits.
        if (__lc->_M_frac_digits > 0)
          {
        __value += __lc->_M_decimal_point;
        if (__paddec >= 0)
          __value.append(__beg + __paddec, __lc->_M_frac_digits);
        else
          {
            // Have to pad zeros in the decimal position.
            __value.append(-__paddec, __lit[money_base::_S_zero]);
            __value.append(__beg, __len);
          }
          }
  
        // Calculate length of resulting string.
        const ios_base::fmtflags __f = __io.flags() 
                                       & ios_base::adjustfield;
        __len = __value.size() + __sign_size;
        __len += ((__io.flags() & ios_base::showbase)
              ? __lc->_M_curr_symbol_size : 0);

        string_type __res;
        __res.reserve(2 * __len);
        
        const size_type __width = static_cast<size_type>(__io.width());  
        const bool __testipad = (__f == ios_base::internal
                     && __len < __width);
        // Fit formatted digits into the required pattern.
        for (int __i = 0; __i < 4; ++__i)
          {
        const part __which = static_cast<part>(__p.field[__i]);
        switch (__which)
          {
          case money_base::symbol:
            if (__io.flags() & ios_base::showbase)
              __res.append(__lc->_M_curr_symbol,
                   __lc->_M_curr_symbol_size);
            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.append(__width - __len, __fill);
            else
              __res += __fill;
            break;
          case money_base::none:
            if (__testipad)
              __res.append(__width - __len, __fill);
            break;
          }
          }
        
        // Special case of multi-part sign parts.
        if (__sign_size > 1)
          __res.append(__sign + 1, __sign_size - 1);
        
        // 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, __width - __len, __fill);
        __len = __width;
          }
        
        // Write resulting, fully-formatted string to output iterator.
        __s = std::__write(__s, __res.data(), __len);
      }
    __io.width(0);
    return __s;    
      }

#if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
  template<typename _CharT, typename _OutIter>
    _OutIter
    money_put<_CharT, _OutIter>::
    __do_put(iter_type __s, bool __intl, ios_base& __io, char_type __fill,
         double __units) const
    {
      return this->do_put(__s, __intl, __io, __fill, (long double) __units);
    }
#endif

  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 _GLIBCXX_USE_C99
      // First try a buffer perhaps big enough.
      int __cs_size = 64;
      char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 328. Bad sprintf format modifier in money_put<>::do_put()
      int __len = std::__convert_from_v(__cs, __cs_size, "%.*Lf", __units,
                    _S_get_c_locale(), 0);
      // 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 = std::__convert_from_v(__cs, __cs_size, "%.*Lf", __units,
                    _S_get_c_locale(), 0);
    }
#else
      // max_exponent10 + 1 for the integer part, + 2 for sign and '\0'.
      const int __cs_size = numeric_limits<long double>::max_exponent10 + 3;
      char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
      int __len = std::__convert_from_v(__cs, 0, "%.*Lf", __units,
                    _S_get_c_locale(), 0);
#endif
      _CharT* __ws = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
                               * __cs_size));
      __ctype.widen(__cs, __cs + __len, __ws);
      const string_type __digits(__ws, __len);
      return __intl ? _M_insert<true>(__s, __io, __fill, __digits)
                : _M_insert<false>(__s, __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
    { return __intl ? _M_insert<true>(__s, __io, __fill, __digits)
                : _M_insert<false>(__s, __io, __fill, __digits); }

_GLIBCXX_END_LDBL_NAMESPACE

  // 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; }

  // Expand a strftime format string and parse it.  E.g., do_get_date() may
  // pass %m/%d/%Y => extracted characters.
  template<typename _CharT, typename _InIter>
    _InIter
    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
    {
      const locale& __loc = __io._M_getloc();
      const __timepunct<_CharT>& __tp = use_facet<__timepunct<_CharT> >(__loc);
      const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
      const size_t __len = char_traits<_CharT>::length(__format);

      for (size_t __i = 0; __beg != __end && __i < __len && !__err; ++__i)
    {
      if (__ctype.narrow(__format[__i], 0) == '%')
        {
          // Verify valid formatting code, attempt to extract.
          char __c = __ctype.narrow(__format[++__i], 0);
          int __mem = 0;
          if (__c == 'E' || __c == 'O')
        __c = __ctype.narrow(__format[++__i], 0);
          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);
          __beg = _M_extract_name(__beg, __end, __tm->tm_wday, __days1,
                      7, __io, __err);
          break;
        case 'A':
          // Weekday name [tm_wday].
          const char_type*  __days2[7];
          __tp._M_days(__days2);
          __beg = _M_extract_name(__beg, __end, __tm->tm_wday, __days2,
                      7, __io, __err);
          break;
        case 'h':
        case 'b':
          // Abbreviated month name [tm_mon]
          const char_type*  __months1[12];
          __tp._M_months_abbreviated(__months1);
          __beg = _M_extract_name(__beg, __end, __tm->tm_mon, 
                      __months1, 12, __io, __err);
          break;
        case 'B':
          // Month name [tm_mon].
          const char_type*  __months2[12];
          __tp._M_months(__months2);
          __beg = _M_extract_name(__beg, __end, __tm->tm_mon, 
                      __months2, 12, __io, __err);
          break;
        case 'c':
          // Default time and date representation.
          const char_type*  __dt[2];
          __tp._M_date_time_formats(__dt);
          __beg = _M_extract_via_format(__beg, __end, __io, __err, 
                        __tm, __dt[0]);
          break;
        case 'd':
          // Day [01, 31]. [tm_mday]
          __beg = _M_extract_num(__beg, __end, __tm->tm_mday, 1, 31, 2,
                     __io, __err);
          break;
        case 'e':
          // Day [1, 31], with single digits preceded by
          // space. [tm_mday]
          if (__ctype.is(ctype_base::space, *__beg))
            __beg = _M_extract_num(++__beg, __end, __tm->tm_mday, 1, 9,
                       1, __io, __err);
          else
            __beg = _M_extract_num(__beg, __end, __tm->tm_mday, 10, 31,
                       2, __io, __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);
          __beg = _M_extract_via_format(__beg, __end, __io, __err, 
                        __tm, __wcs);
          break;
        case 'H':
          // Hour [00, 23]. [tm_hour]
          __beg = _M_extract_num(__beg, __end, __tm->tm_hour, 0, 23, 2,
                     __io, __err);
          break;
        case 'I':
          // Hour [01, 12]. [tm_hour]
          __beg = _M_extract_num(__beg, __end, __tm->tm_hour, 1, 12, 2,
                     __io, __err);
          break;
        case 'm':
          // Month [01, 12]. [tm_mon]
          __beg = _M_extract_num(__beg, __end, __mem, 1, 12, 2, 
                     __io, __err);
          if (!__err)
            __tm->tm_mon = __mem - 1;
          break;
        case 'M':
          // Minute [00, 59]. [tm_min]
          __beg = _M_extract_num(__beg, __end, __tm->tm_min, 0, 59, 2,
                     __io, __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);
          __beg = _M_extract_via_format(__beg, __end, __io, __err, 
                        __tm, __wcs);
          break;
        case 'S':
          // Seconds. [tm_sec]
          // [00, 60] in C99 (one leap-second), [00, 61] in C89.
#ifdef _GLIBCXX_USE_C99
          __beg = _M_extract_num(__beg, __end, __tm->tm_sec, 0, 60, 2,
#else
          __beg = _M_extract_num(__beg, __end, __tm->tm_sec, 0, 61, 2,
#endif
                     __io, __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);
          __beg = _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);
          __beg = _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);
          __beg = _M_extract_via_format(__beg, __end, __io, __err, 
                        __tm, __times[0]);
          break;
        case 'y':
        case 'C': // C99
          // Two digit year. [tm_year]
          __beg = _M_extract_num(__beg, __end, __tm->tm_year, 0, 99, 2,
                     __io, __err);
          break;
        case 'Y':
          // Year [1900). [tm_year]
          __beg = _M_extract_num(__beg, __end, __mem, 0, 9999, 4,
                     __io, __err);
          if (!__err)
            __tm->tm_year = __mem - 1900;
          break;
        case 'Z':
          // Timezone info.
          if (__ctype.is(ctype_base::upper, *__beg))
            {
              int __tmp;
              __beg = _M_extract_name(__beg, __end, __tmp,
                       __timepunct_cache<_CharT>::_S_timezones,
                          14, __io, __err);

              // GMT requires special effort.
              if (__beg != __end && !__err && __tmp == 0
              && (*__beg == __ctype.widen('-')
                  || *__beg == __ctype.widen('+')))
            {
              __beg = _M_extract_num(__beg, __end, __tmp, 0, 23, 2,
                         __io, __err);
              __beg = _M_extract_num(__beg, __end, __tmp, 0, 59, 2,
                         __io, __err);
            }
            }
          else
            __err |= ios_base::failbit;
          break;
        default:
          // Not recognized.
          __err |= ios_base::failbit;
        }
        }
      else
        {
          // Verify format and input match, extract and discard.
          if (__format[__i] == *__beg)
        ++__beg;
          else
        __err |= ios_base::failbit;
        }
    }
      return __beg;
    }

  template<typename _CharT, typename _InIter>
    _InIter
    time_get<_CharT, _InIter>::
    _M_extract_num(iter_type __beg, iter_type __end, int& __member,
           int __min, int __max, size_t __len,
           ios_base& __io, ios_base::iostate& __err) const
    {
      const locale& __loc = __io._M_getloc();
      const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);

      // As-is works for __len = 1, 2, 4, the values actually used.
      int __mult = __len == 2 ? 10 : (__len == 4 ? 1000 : 1);

      ++__min;
      size_t __i = 0;
      int __value = 0;
      for (; __beg != __end && __i < __len; ++__beg, ++__i)
    {
      const char __c = __ctype.narrow(*__beg, '*');
      if (__c >= '0' && __c <= '9')
        {
          __value = __value * 10 + (__c - '0');
          const int __valuec = __value * __mult;
          if (__valuec > __max || __valuec + __mult < __min)
        break;
          __mult /= 10;
        }
      else
        break;
    }
      if (__i == __len)
    __member = __value;
      else
    __err |= ios_base::failbit;
      return __beg;
    }

  // Assumptions:
  // All elements in __names are unique.
  template<typename _CharT, typename _InIter>
    _InIter
    time_get<_CharT, _InIter>::
    _M_extract_name(iter_type __beg, iter_type __end, int& __member,
            const _CharT** __names, size_t __indexlen,
            ios_base& __io, ios_base::iostate& __err) const
    {
      typedef char_traits<_CharT>       __traits_type;
      const locale& __loc = __io._M_getloc();
      const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);

      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;

      // Look for initial matches.
      // NB: Some of the locale data is in the form of all lowercase
      // names, and some is in the form of initially-capitalized
      // names. Look for both.
      if (__beg != __end)
    {
      const char_type __c = *__beg;
      for (size_t __i1 = 0; __i1 < __indexlen; ++__i1)
        if (__c == __names[__i1][0]
        || __c == __ctype.toupper(__names[__i1][0]))
          __matches[__nmatches++] = __i1;
    }

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

      if (__nmatches == 1)
    {
      // Make sure found name is completely extracted.
      ++__beg, ++__pos;
      __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;
      return __beg;
    }

  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
    {
      const locale& __loc = __io._M_getloc();
      const __timepunct<_CharT>& __tp = use_facet<__timepunct<_CharT> >(__loc);
      const char_type*  __times[2];
      __tp._M_time_formats(__times);
      __beg = _M_extract_via_format(__beg, __end, __io, __err, 
                    __tm, __times[0]);
      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
    {
      const locale& __loc = __io._M_getloc();
      const __timepunct<_CharT>& __tp = use_facet<__timepunct<_CharT> >(__loc);
      const char_type*  __dates[2];
      __tp._M_date_formats(__dates);
      __beg = _M_extract_via_format(__beg, __end, __io, __err, 
                    __tm, __dates[0]);
      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;
      const locale& __loc = __io._M_getloc();
      const __timepunct<_CharT>& __tp = use_facet<__timepunct<_CharT> >(__loc);
      const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
      const char_type*  __days[7];
      __tp._M_days_abbreviated(__days);
      int __tmpwday;
      __beg = _M_extract_name(__beg, __end, __tmpwday, __days, 7, __io, __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 && __beg != __end)
    {
      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;
      const locale& __loc = __io._M_getloc();
      const __timepunct<_CharT>& __tp = use_facet<__timepunct<_CharT> >(__loc);
      const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
      const char_type*  __months[12];
      __tp._M_months_abbreviated(__months);
      int __tmpmon;
      __beg = _M_extract_name(__beg, __end, __tmpmon, __months, 12, 
                  __io, __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 && __beg != __end)
    {
      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
    {
      const locale& __loc = __io._M_getloc();
      const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);

      size_t __i = 0;
      int __value = 0;
      for (; __beg != __end && __i < 4; ++__beg, ++__i)
    {
      const char __c = __ctype.narrow(*__beg, '*');
      if (__c >= '0' && __c <= '9')
        __value = __value * 10 + (__c - '0');
      else
        break;
    }
      if (__i == 2 || __i == 4)
    __tm->tm_year = __i == 2 ? __value : __value - 1900;
      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 __fill, const tm* __tm,
    const _CharT* __beg, const _CharT* __end) const
    {
      const locale& __loc = __io._M_getloc();
      ctype<_CharT> const& __ctype = use_facet<ctype<_CharT> >(__loc);
      for (; __beg != __end; ++__beg)
    if (__ctype.narrow(*__beg, 0) != '%')
      {
        *__s = *__beg;
        ++__s;
      }
    else if (++__beg != __end)
      {
        char __format;
        char __mod = 0;
        const char __c = __ctype.narrow(*__beg, 0);
        if (__c != 'E' && __c != 'O')
          __format = __c;
        else if (++__beg != __end)
          {
        __mod = __c;
        __format = __ctype.narrow(*__beg, 0);
          }
        else
          break;
        __s = this->do_put(__s, __io, __fill, __tm, __format, __mod);
      }
    else
      break;
      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
    {
      const locale& __loc = __io._M_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 = 128;
      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.
      return std::__write(__s, __res, char_traits<char_type>::length(__res));
    }

  // 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
    {
      // strcoll assumes zero-terminated strings so we make a copy
      // and then put a zero at the end.
      const string_type __one(__lo1, __hi1);
      const string_type __two(__lo2, __hi2);

      const _CharT* __p = __one.c_str();
      const _CharT* __pend = __one.data() + __one.length();
      const _CharT* __q = __two.c_str();
      const _CharT* __qend = __two.data() + __two.length();

      // strcoll stops when it sees a nul character so we break
      // the strings into zero-terminated substrings and pass those
      // to strcoll.
      for (;;)
    {
      const int __res = _M_compare(__p, __q);
      if (__res)
        return __res;

      __p += char_traits<_CharT>::length(__p);
      __q += char_traits<_CharT>::length(__q);
      if (__p == __pend && __q == __qend)
        return 0;
      else if (__p == __pend)
        return -1;
      else if (__q == __qend)
        return 1;

      __p++;
      __q++;
    }
    }

  template<typename _CharT>
    typename collate<_CharT>::string_type
    collate<_CharT>::
    do_transform(const _CharT* __lo, const _CharT* __hi) const
    {
      // strxfrm assumes zero-terminated strings so we make a copy
      string_type __str(__lo, __hi);

      const _CharT* __p = __str.c_str();
      const _CharT* __pend = __str.data() + __str.length();

      size_t __len = (__hi - __lo) * 2;

      string_type __ret;

      // strxfrm stops when it sees a nul character so we break
      // the string into zero-terminated substrings and pass those
      // to strxfrm.
      for (;;)
    {
      // First try a buffer perhaps big enough.
      _CharT* __c =
        static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * __len));
      size_t __res = _M_transform(__c, __p, __len);
      // If the buffer was not large enough, try again with the
      // correct size.
      if (__res >= __len)
        {
          __len = __res + 1;
          __c = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
                              * __len));
          __res = _M_transform(__c, __p, __len);
        }

      __ret.append(__c, __res);
      __p += char_traits<_CharT>::length(__p);
      if (__p == __pend)
        return __ret;

      __p++;
      __ret.push_back(_CharT());
    }
    }

  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);
    }

  // 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>
    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)
    {
      const size_t __plen = static_cast<size_t>(__newlen - __oldlen);
      const ios_base::fmtflags __adjust = __io.flags() & ios_base::adjustfield;

      // Padding last.
      if (__adjust == ios_base::left)
    {
      _Traits::copy(__news, const_cast<_CharT*>(__olds), __oldlen);
      _Traits::assign(__news + __oldlen, __plen, __fill);
      return;
    }

      size_t __mod = 0;
      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.
          const locale& __loc = __io._M_getloc();
      const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);

      const bool __testsign = (__ctype.widen('-') == __olds[0]
                   || __ctype.widen('+') == __olds[0]);
      const bool __testhex = (__ctype.widen('0') == __olds[0]
                  && __oldlen > 1
                  && (__ctype.widen('x') == __olds[1]
                      || __ctype.widen('X') == __olds[1]));
      if (__testhex)
        {
          __news[0] = __olds[0];
          __news[1] = __olds[1];
          __mod = 2;
          __news += 2;
        }
      else if (__testsign)
        {
          __news[0] = __olds[0];
          __mod = 1;
          ++__news;
        }
      // else Padding first.
    }
      _Traits::assign(__news, __plen, __fill);
      _Traits::copy(__news + __plen, const_cast<_CharT*>(__olds + __mod),
            __oldlen - __mod);
    }

  bool
  __verify_grouping(const char* __grouping, size_t __grouping_size,
            const string& __grouping_tmp)
  {
    const size_t __n = __grouping_tmp.size() - 1;
    const size_t __min = std::min(__n, size_t(__grouping_size - 1));
    size_t __i = __n;
    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 ...
    for (size_t __j = 0; __j < __min && __test; --__i, ++__j)
      __test = __grouping_tmp[__i] == __grouping[__j];
    for (; __i && __test; --__i)
      __test = __grouping_tmp[__i] == __grouping[__min];
    // ... but the first parsed grouping can be <= numpunct
    // grouping (only do the check if the numpunct char is > 0
    // because <= 0 means any size is ok).
    if (static_cast<signed char>(__grouping[__min]) > 0)
      __test &= __grouping_tmp[0] <= __grouping[__min];
    return __test;
  }

  template<typename _CharT>
    _CharT*
    __add_grouping(_CharT* __s, _CharT __sep,
           const char* __gbeg, size_t __gsize,
           const _CharT* __first, const _CharT* __last)
    {
      if (__last - __first > *__gbeg
      && static_cast<signed char>(*__gbeg) > 0)
    {
      const bool __bump = __gsize != 1;
      __s = std::__add_grouping(__s,  __sep, __gbeg + __bump,
                    __gsize - __bump, __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.
#if _GLIBCXX_EXTERN_TEMPLATE
  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 _GLIBCXX_LDBL_NAMESPACE money_get<char>;
  extern template class _GLIBCXX_LDBL_NAMESPACE money_put<char>;
  extern template class numpunct<char>;
  extern template class numpunct_byname<char>;
  extern template class _GLIBCXX_LDBL_NAMESPACE num_get<char>;
  extern template class _GLIBCXX_LDBL_NAMESPACE 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 _GLIBCXX_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 _GLIBCXX_LDBL_NAMESPACE money_get<wchar_t>;
  extern template class _GLIBCXX_LDBL_NAMESPACE money_put<wchar_t>;
  extern template class numpunct<wchar_t>;
  extern template class numpunct_byname<wchar_t>;
  extern template class _GLIBCXX_LDBL_NAMESPACE num_get<wchar_t>;
  extern template class _GLIBCXX_LDBL_NAMESPACE 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
#endif
} // namespace std

#endif

---