// 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.
	const streamsize __prec = __io.precision() < 0 ? 6 : __io.precision();

	const int __max_digits =
	  __gnu_cxx::__numeric_traits<_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];
	__num_base::_S_format_float(__io, __fbuf, __mod);

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

	// 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(_S_get_c_locale(), __cs, __cs_size,
					  __fbuf, __prec, __v);
	  }
#else
	// Consider the possibility of long ios_base::fixed outputs
	const bool __fixed = __io.flags() & ios_base::fixed;
	const int __max_exp =
	  __gnu_cxx::__numeric_traits<_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));
	__len = std::__convert_from_v(_S_get_c_locale(), __cs, 0, __fbuf, 
				      __prec, __v);
#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.
	_CharT* __wp = 0;
	const char* __p = char_traits<char>::find(__cs, __len, '.');
	if (__p)
	  {
	    __wp = __ws + (__p - __cs);
	    *__wp = __lc->_M_decimal_point;
	  }
	
	// 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
	    && (__wp || __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, __wp, __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));

      typedef __gnu_cxx::__conditional_type<(sizeof(const void*)
					     <= sizeof(unsigned long)),
	unsigned long, unsigned long long>::__type _UIntPtrType;       

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

_GLIBCXX_END_LDBL_NAMESPACE

  // Construct correctly padded string, as per 22.2.2.2.2
  // Assumes
  // __newlen > __oldlen
  // __news is allocated for __newlen size

  // 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 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, __olds, __oldlen);
	  _Traits::assign(__news + __oldlen, __plen, __fill);
	  return;
	}

      size_t __mod = 0;
      if (__adjust == ios_base::internal)
	{
	  // 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);

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

  template<typename _CharT>
    _CharT*
    __add_grouping(_CharT* __s, _CharT __sep,
		   const char* __gbeg, size_t __gsize,
		   const _CharT* __first, const _CharT* __last)
    {
      size_t __idx = 0;
      size_t __ctr = 0;

      while (__last - __first > __gbeg[__idx]
	     && static_cast<signed char>(__gbeg[__idx]) > 0)
	{
	  __last -= __gbeg[__idx];
	  __idx < __gsize - 1 ? ++__idx : ++__ctr;
	}

      while (__first != __last)
	*__s++ = *__first++;

      while (__ctr--)
	{
	  *__s++ = __sep;	  
	  for (char __i = __gbeg[__idx]; __i > 0; --__i)
	    *__s++ = *__first++;
	}

      while (__idx--)
	{
	  *__s++ = __sep;	  
	  for (char __i = __gbeg[__idx]; __i > 0; --__i)
	    *__s++ = *__first++;
	}

      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 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 ctype_byname<char>;

  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
    bool
    has_facet<ctype<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&);

#ifdef _GLIBCXX_USE_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 ctype_byname<wchar_t>;

  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
    bool
    has_facet<ctype<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&);
#endif
#endif

_GLIBCXX_END_NAMESPACE

#endif
// Vector implementation -*- C++ -*-

// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
// 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.

/*
 *
 * Copyright (c) 1994
 * Hewlett-Packard Company
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Hewlett-Packard Company makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 *
 * Copyright (c) 1996
 * Silicon Graphics Computer Systems, Inc.
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Silicon Graphics makes no
 * representations about the suitability of this  software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 */

/** @file stl_vector.h
 *  This is an internal header file, included by other library headers.
 *  You should not attempt to use it directly.
 */

#ifndef _STL_VECTOR_H
#define _STL_VECTOR_H 1

#include <bits/stl_iterator_base_funcs.h>
#include <bits/functexcept.h>
#include <bits/concept_check.h>

_GLIBCXX_BEGIN_NESTED_NAMESPACE(std, _GLIBCXX_STD_D)

  /// See bits/stl_deque.h's _Deque_base for an explanation.
  template<typename _Tp, typename _Alloc>
    struct _Vector_base
    {
      typedef typename _Alloc::template rebind<_Tp>::other _Tp_alloc_type;

      struct _Vector_impl 
      : public _Tp_alloc_type
      {
	_Tp*           _M_start;
	_Tp*           _M_finish;
	_Tp*           _M_end_of_storage;

	_Vector_impl()
	: _Tp_alloc_type(), _M_start(0), _M_finish(0), _M_end_of_storage(0)
	{ }

	_Vector_impl(_Tp_alloc_type const& __a)
	: _Tp_alloc_type(__a), _M_start(0), _M_finish(0), _M_end_of_storage(0)
	{ }
      };
      
    public:
      typedef _Alloc allocator_type;

      _Tp_alloc_type&
      _M_get_Tp_allocator()
      { return *static_cast<_Tp_alloc_type*>(&this->_M_impl); }

      const _Tp_alloc_type&
      _M_get_Tp_allocator() const
      { return *static_cast<const _Tp_alloc_type*>(&this->_M_impl); }

      allocator_type
      get_allocator() const
      { return allocator_type(_M_get_Tp_allocator()); }

      _Vector_base()
      : _M_impl() { }

      _Vector_base(const allocator_type& __a)
      : _M_impl(__a) { }

      _Vector_base(size_t __n, const allocator_type& __a)
      : _M_impl(__a)
      {
	this->_M_impl._M_start = this->_M_allocate(__n);
	this->_M_impl._M_finish = this->_M_impl._M_start;
	this->_M_impl._M_end_of_storage = this->_M_impl._M_start + __n;
      }

#ifdef __GXX_EXPERIMENTAL_CXX0X__
      _Vector_base(_Vector_base&& __x)
      : _M_impl(__x._M_get_Tp_allocator())
      {
	this->_M_impl._M_start = __x._M_impl._M_start;
	this->_M_impl._M_finish = __x._M_impl._M_finish;
	this->_M_impl._M_end_of_storage = __x._M_impl._M_end_of_storage;
	__x._M_impl._M_start = 0;
	__x._M_impl._M_finish = 0;
	__x._M_impl._M_end_of_storage = 0;
      }
#endif

      ~_Vector_base()
      { _M_deallocate(this->_M_impl._M_start, this->_M_impl._M_end_of_storage
		      - this->_M_impl._M_start); }

    public:
      _Vector_impl _M_impl;

      _Tp*
      _M_allocate(size_t __n)
      { return __n != 0 ? _M_impl.allocate(__n) : 0; }

      void
      _M_deallocate(_Tp* __p, size_t __n)
      {
	if (__p)
	  _M_impl.deallocate(__p, __n);
      }
    };


  /**
   *  @brief A standard container which offers fixed time access to
   *  individual elements in any order.
   *
   *  @ingroup Containers
   *  @ingroup Sequences
   *
   *  Meets the requirements of a <a href="tables.html#65">container</a>, a
   *  <a href="tables.html#66">reversible container</a>, and a
   *  <a href="tables.html#67">sequence</a>, including the
   *  <a href="tables.html#68">optional sequence requirements</a> with the
   *  %exception of @c push_front and @c pop_front.
   *
   *  In some terminology a %vector can be described as a dynamic
   *  C-style array, it offers fast and efficient access to individual
   *  elements in any order and saves the user from worrying about
   *  memory and size allocation.  Subscripting ( @c [] ) access is
   *  also provided as with C-style arrays.
  */
  template<typename _Tp, typename _Alloc = std::allocator<_Tp> >
    class vector : protected _Vector_base<_Tp, _Alloc>
    {
      // Concept requirements.
      typedef typename _Alloc::value_type                _Alloc_value_type;
      __glibcxx_class_requires(_Tp, _SGIAssignableConcept)
      __glibcxx_class_requires2(_Tp, _Alloc_value_type, _SameTypeConcept)
      
      typedef _Vector_base<_Tp, _Alloc>			 _Base;
      typedef vector<_Tp, _Alloc>			 vector_type;
      typedef typename _Base::_Tp_alloc_type		 _Tp_alloc_type;

    public:
      typedef _Tp					 value_type;
      typedef typename _Tp_alloc_type::pointer           pointer;
      typedef typename _Tp_alloc_type::const_pointer     const_pointer;
      typedef typename _Tp_alloc_type::reference         reference;
      typedef typename _Tp_alloc_type::const_reference   const_reference;
      typedef __gnu_cxx::__normal_iterator<pointer, vector_type> iterator;
      typedef __gnu_cxx::__normal_iterator<const_pointer, vector_type>
      const_iterator;
      typedef std::reverse_iterator<const_iterator>  const_reverse_iterator;
      typedef std::reverse_iterator<iterator>		 reverse_iterator;
      typedef size_t					 size_type;
      typedef ptrdiff_t					 difference_type;
      typedef _Alloc                        		 allocator_type;

    protected:
      using _Base::_M_allocate;
      using _Base::_M_deallocate;
      using _Base::_M_impl;
      using _Base::_M_get_Tp_allocator;

    public:
      // [23.2.4.1] construct/copy/destroy
      // (assign() and get_allocator() are also listed in this section)
      /**
       *  @brief  Default constructor creates no elements.
       */
      vector()
      : _Base() { }

      /**
       *  @brief  Creates a %vector with no elements.
       *  @param  a  An allocator object.
       */
      explicit
      vector(const allocator_type& __a)
      : _Base(__a) { }

      /**
       *  @brief  Creates a %vector with copies of an exemplar element.
       *  @param  n  The number of elements to initially create.
       *  @param  value  An element to copy.
       *  @param  a  An allocator.
       *
       *  This constructor fills the %vector with @a n copies of @a value.
       */
      explicit
      vector(size_type __n, const value_type& __value = value_type(),
	     const allocator_type& __a = allocator_type())
      : _Base(__n, __a)
      { _M_fill_initialize(__n, __value); }

      /**
       *  @brief  %Vector copy constructor.
       *  @param  x  A %vector of identical element and allocator types.
       *
       *  The newly-created %vector uses a copy of the allocation
       *  object used by @a x.  All the elements of @a x are copied,
       *  but any extra memory in
       *  @a x (for fast expansion) will not be copied.
       */
      vector(const vector& __x)
      : _Base(__x.size(), __x._M_get_Tp_allocator())
      { this->_M_impl._M_finish =
	  std::__uninitialized_copy_a(__x.begin(), __x.end(),
				      this->_M_impl._M_start,
				      _M_get_Tp_allocator());
      }

#ifdef __GXX_EXPERIMENTAL_CXX0X__
      /**
       *  @brief  %Vector move constructor.
       *  @param  x  A %vector of identical element and allocator types.
       *
       *  The newly-created %vector contains the exact contents of @a x.
       *  The contents of @a x are a valid, but unspecified %vector.
       */
      vector(vector&& __x)
      : _Base(std::forward<_Base>(__x)) { }
#endif

      /**
       *  @brief  Builds a %vector from a range.
       *  @param  first  An input iterator.
       *  @param  last  An input iterator.
       *  @param  a  An allocator.
       *
       *  Create a %vector consisting of copies of the elements from
       *  [first,last).
       *
       *  If the iterators are forward, bidirectional, or
       *  random-access, then this will call the elements' copy
       *  constructor N times (where N is distance(first,last)) and do
       *  no memory reallocation.  But if only input iterators are
       *  used, then this will do at most 2N calls to the copy
       *  constructor, and logN memory reallocations.
       */
      template<typename _InputIterator>
        vector(_InputIterator __first, _InputIterator __last,
	       const allocator_type& __a = allocator_type())
	: _Base(__a)
        {
	  // Check whether it's an integral type.  If so, it's not an iterator.
	  typedef typename std::__is_integer<_InputIterator>::__type _Integral;
	  _M_initialize_dispatch(__first, __last, _Integral());
	}

      /**
       *  The dtor only erases the elements, and note that if the
       *  elements themselves are pointers, the pointed-to memory is
       *  not touched in any way.  Managing the pointer is the user's
       *  responsibility.
       */
      ~vector()
      { std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
		      _M_get_Tp_allocator()); }

      /**
       *  @brief  %Vector assignment operator.
       *  @param  x  A %vector of identical element and allocator types.
       *
       *  All the elements of @a x are copied, but any extra memory in
       *  @a x (for fast expansion) will not be copied.  Unlike the
       *  copy constructor, the allocator object is not copied.
       */
      vector&
      operator=(const vector& __x);

#ifdef __GXX_EXPERIMENTAL_CXX0X__
      /**
       *  @brief  %Vector move assignment operator.
       *  @param  x  A %vector of identical element and allocator types.
       *
       *  The contents of @a x are moved into this %vector (without copying).
       *  @a x is a valid, but unspecified %vector.
       */
      vector&
      operator=(vector&& __x)
      {
	// NB: DR 675.
	this->clear();
	this->swap(__x); 
	return *this;
      }
#endif

      /**
       *  @brief  Assigns a given value to a %vector.
       *  @param  n  Number of elements to be assigned.
       *  @param  val  Value to be assigned.
       *
       *  This function fills a %vector with @a n copies of the given
       *  value.  Note that the assignment completely changes the
       *  %vector and that the resulting %vector's size is the same as
       *  the number of elements assigned.  Old data may be lost.
       */
      void
      assign(size_type __n, const value_type& __val)
      { _M_fill_assign(__n, __val); }

      /**
       *  @brief  Assigns a range to a %vector.
       *  �*�*�*�*�*�*�*�*�*�*�*�*�*�*�*�*�*�*�*�*�*�*�*�*�*�*�*�*@param  first  An input iterator.
       *  @param  last   An input iterator.
       *
       *  This function fills a %vector with copies of the elements in the
       *  range [first,last).
       *
       *  Note that the assignment completely changes the %vector and
       *  that the resulting %vector's size is the same as the number
       *  of elements assigned.  Old data may be lost.
       */
      template<typename _InputIterator>
        void
        assign(_InputIterator __first, _InputIterator __last)
        {
	  // Check whether it's an integral type.  If so, it's not an iterator.
	  typedef typename std::__is_integer<_InputIterator>::__type _Integral;
	  _M_assign_dispatch(__first, __last, _Integral());
	}

      /// Get a copy of the memory allocation object.
      using _Base::get_allocator;

      // iterators
      /**
       *  Returns a read/write iterator that points to the first
       *  element in the %vector.  Iteration is done in ordinary
       *  element order.
       */
      iterator
      begin()
      { return iterator(this->_M_impl._M_start); }

      /**
       *  Returns a read-only (constant) iterator that points to the
       *  first element in the %vector.  Iteration is done in ordinary
       *  element order.
       */
      const_iterator
      begin() const
      { return const_iterator(this->_M_impl._M_start); }

      /**
       *  Returns a read/write iterator that points one past the last
       *  element in the %vector.  Iteration is done in ordinary
       *  element order.
       */
      iterator
      end()
      { return iterator(this->_M_impl._M_finish); }

      /**
       *  Returns a read-only (constant) iterator that points one past
       *  the last element in the %vector.  Iteration is done in
       *  ordinary element order.
       */
      const_iterator
      end() const
      { return const_iterator(this->_M_impl._M_finish); }

      /**
       *  Returns a read/write reverse iterator that points to the
       *  last element in the %vector.  Iteration is done in reverse
       *  element order.
       */
      reverse_iterator
      rbegin()
      { return reverse_iterator(end()); }

      /**
       *  Returns a read-only (constant) reverse iterator that points
       *  to the last element in the %vector.  Iteration is done in
       *  reverse element order.
       */
      const_reverse_iterator
      rbegin() const
      { return const_reverse_iterator(end()); }

      /**
       *  Returns a read/write reverse iterator that points to one
       *  before the first element in the %vector.  Iteration is done
       *  in reverse element order.
       */
      reverse_iterator
      rend()
      { return reverse_iterator(begin()); }

      /**
       *  Returns a read-only (constant) reverse iterator that points
       *  to one before the first element in the %vector.  Iteration
       *  is done in reverse element order.
       */
      const_reverse_iterator
      rend() const
      { return const_reverse_iterator(begin()); }

#ifdef __GXX_EXPERIMENTAL_CXX0X__
      /**
       *  Returns a read-only (constant) iterator that points to the
       *  first element in the %vector.  Iteration is done in ordinary
       *  element order.
       */
      const_iterator
      cbegin() const
      { return const_iterator(this->_M_impl._M_start); }

      /**
       *  Returns a read-only (constant) iterator that points one past
       *  the last element in the %vector.  Iteration is done in
       *  ordinary element order.
       */
      const_iterator
      cend() const
      { return const_iterator(this->_M_impl._M_finish); }

      /**
       *  Returns a read-only (constant) reverse iterator that points
       *  to the last element in the %vector.  Iteration is done in
       *  reverse element order.
       */
      const_reverse_iterator
      crbegin() const
      { return const_reverse_iterator(end()); }

      /**
       *  Returns a read-only (constant) reverse iterator that points
       *  to one before the first element in the %vector.  Iteration
       *  is done in reverse element order.
       */
      const_reverse_iterator
      crend() const
      { return const_reverse_iterator(begin()); }
#endif

      // [23.2.4.2] capacity
      /**  Returns the number of elements in the %vector.  */
      size_type
      size() const
      { return size_type(this->_M_impl._M_finish - this->_M_impl._M_start); }

      /**  Returns the size() of the largest possible %vector.  */
      size_type
      max_size() const
      { return _M_get_Tp_allocator().max_size(); }

      /**
       *  @brief  Resizes the %vector to the specified number of elements.
       *  @param  new_size  Number of elements the %vector should contain.
       *  @param  x  Data with which new elements should be populated.
       *
       *  This function will %resize the %vector to the specified
       *  number of elements.  If the number is smaller than the
       *  %vector's current size the %vector is truncated, otherwise
       *  the %vector is extended and new elements are populated with
       *  given data.
       */
      void
      resize(size_type __new_size, value_type __x = value_type())
      {
	if (__new_size < size())
	  _M_erase_at_end(this->_M_impl._M_start + __new_size);
	else
	  insert(end(), __new_size - size(), __x);
      }

      /**
       *  Returns the total number of elements that the %vector can
       *  hold before needing to allocate more memory.
       */
      size_type
      capacity() const
      { return size_type(this->_M_impl._M_end_of_storage
			 - this->_M_impl._M_start); }

      /**
       *  Returns true if the %vector is empty.  (Thus begin() would
       *  equal end().)
       */
      bool
      empty() const
      { return begin() == end(); }

      /**
       *  @brief  Attempt to preallocate enough memory for specified number of
       *          elements.
       *  @param  n  Number of elements required.
       *  @throw  std::length_error  If @a n exceeds @c max_size().
       *
       *  This function attempts to reserve enough memory for the
       *  %vector to hold the specified number of elements.  If the
       *  number requested is more than max_size(), length_error is
       *  thrown.
       *
       *  The advantage of this function is that if optimal code is a
       *  necessity and the user can determine the number of elements
       *  that will be required, the user can reserve the memory in
       *  %advance, and thus prevent a possible reallocation of memory
       *  and copying of %vector data.
       */
      void
      reserve(size_type __n);

      // element access
      /**
       *  @brief  Subscript access to the data contained in the %vector.
       *  @param n The index of the element for which data should be
       *  accessed.
       *  @return  Read/write reference to data.
       *
       *  This operator allows for easy, array-style, data access.
       *  Note that data access with this operator is unchecked and
       *  out_of_range lookups are not defined. (For checked lookups
       *  see at().)
       */
      reference
      operator[](size_type __n)
      { return *(this->_M_impl._M_start + __n); }

      /**
       *  @brief  Subscript access to the data contained in the %vector.
       *  @param n The index of the element for which data should be
       *  accessed.
       *  @return  Read-only (constant) reference to data.
       *
       *  This operator allows for easy, array-style, data access.
       *  Note that data access with this operator is unchecked and
       *  out_of_range lookups are not defined. (For checked lookups
       *  see at().)
       */
      const_reference
      operator[](size_type __n) const
      { return *(this->_M_impl._M_start + __n); }

    protected:
      /// Safety check used only from at().
      void
      _M_range_check(size_type __n) const
      {
	if (__n >= this->size())
	  __throw_out_of_range(__N("vector::_M_range_check"));
      }

    public:
      /**
       *  @brief  Provides access to the data contained in the %vector.
       *  @param n The index of the element for which data should be
       *  accessed.
       *  @return  Read/write reference to data.
       *  @throw  std::out_of_range  If @a n is an invalid index.
       *
       *  This function provides for safer data access.  The parameter
       *  is first checked that it is in the range of the vector.  The
       *  function throws out_of_range if the check fails.
       */
      reference
      at(size_type __n)
      {
	_M_range_check(__n);
	return (*this)[__n]; 
      }

      /**
       *  @brief  Provides access to the data contained in the %vector.
       *  @param n The index of the element for which data should be
       *  accessed.
       *  @return  Read-only (constant) reference to data.
       *  @throw  std::out_of_range  If @a n is an invalid index.
       *
       *  This function provides for safer data access.  The parameter
       *  is first checked that it is in the range of the vector.  The
       *  function throws out_of_range if the check fails.
       */
      const_reference
      at(size_type __n) const
      {
	_M_range_check(__n);
	return (*this)[__n];
      }

      /**
       *  Returns a read/write reference to the data at the first
       *  element of the %vector.
       */
      reference
      front()
      { return *begin(); }

      /**
       *  Returns a read-only (constant) reference to the data at the first
       *  element of the %vector.
       */
      const_reference
      front() const
      { return *begin(); }

      /**
       *  Returns a read/write reference to the data at the last
       *  element of the %vector.
       */
      reference
      back()
      { return *(end() - 1); }
      
      /**
       *  Returns a read-only (constant) reference to the data at the
       *  last element of the %vector.
       */
      const_reference
      back() const
      { return *(end() - 1); }

      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // DR 464. Suggestion for new member functions in standard containers.
      // data access
      /**
       *   Returns a pointer such that [data(), data() + size()) is a valid
       *   range.  For a non-empty %vector, data() == &front().
       */
      pointer
      data()
      { return pointer(this->_M_impl._M_start); }

      const_pointer
      data() const
      { return const_pointer(this->_M_impl._M_start); }

      // [23.2.4.3] modifiers
      /**
       *  @brief  Add data to the end of the %vector.
       *  @param  x  Data to be added.
       *
       *  This is a typical stack operation.  The function creates an
       *  element at the end of the %vector and assigns the given data
       *  to it.  Due to the nature of a %vector this operation can be
       *  done in constant time if the %vector has preallocated space
       *  available.
       */
#ifndef __GXX_EXPERIMENTAL_CXX0X__
      void
      push_back(const value_type& __x)
      {
	if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
	  {
	    this->_M_impl.construct(this->_M_impl._M_finish, __x);
	    ++this->_M_impl._M_finish;
	  }
	else
	  _M_insert_aux(end(), __x);
      }
#else
      template<typename... _Args>
        void
        push_back(_Args&&... __args)
	{
	  if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
	    {
	      this->_M_impl.construct(this->_M_impl._M_finish,
				      std::forward<_Args>(__args)...);
	      ++this->_M_impl._M_finish;
	    }
	  else
	    _M_insert_aux(end(), std::forward<_Args>(__args)...);
	}
#endif

      /**
       *  @brief  Removes last element.
       *
       *  This is a typical stack operation. It shrinks the %vector by one.
       *
       *  Note that no data is returned, and if the last element's
       *  data is needed, it should be retrieved before pop_back() is
       *  called.
       */
      void
      pop_back()
      {
	--this->_M_impl._M_finish;
	this->_M_impl.destroy(this->_M_impl._M_finish);
      }

#ifdef __GXX_EXPERIMENTAL_CXX0X__
      /**
       *  @brief  Inserts an object in %vector before specified iterator.
       *  @param  position  An iterator into the %vector.
       *  @param  args  Arguments.
       *  @return  An iterator that points to the inserted data.
       *
       *  This function will insert an object of type T constructed
       *  with T(std::forward<Args>(args)...) before the specified location.
       *  Note that this kind of operation could be expensive for a %vector
       *  and if it is frequently used the user should consider using
       *  std::list.
       */
      template<typename... _Args>
        iterator
        emplace(iterator __position, _Args&&... __args);
#endif

      /**
       *  @brief  Inserts given value into %vector before specified iterator.
       *  @param  position  An iterator into the %vector.
       *  @param  x  Data to be inserted.
       *  @return  An iterator that points to the inserted data.
       *
       *  This function will insert a copy of the given value before
       *  the specified location.  Note that this kind of operation
       *  could be expensive for a %vector and if it is frequently
       *  used the user should consider using std::list.
       */
      iterator
      insert(iterator __position, const value_type& __x);

#ifdef __GXX_EXPERIMENTAL_CXX0X__
      /**
       *  @brief  Inserts given rvalue into %vector before specified iterator.
       *  @param  position  An iterator into the %vector.
       *  @param  x  Data to be inserted.
       *  @return  An iterator that points to the inserted data.
       *
       *  This function will insert a copy of the given rvalue before
       *  the specified location.  Note that this kind of operation
       *  could be expensive for a %vector and if it is frequently
       *  used the user should consider using std::list.
       */
      iterator
      insert(iterator __position, value_type&& __x)
      { return emplace(__position, std::move(__x)); }
#endif

      /**
       *  @brief  Inserts a number of copies of given data into the %vector.
       *  @param  position  An iterator into the %vector.
       *  @param  n  Number of elements to be inserted.
       *  @param  x  Data to be inserted.
       *
       *  This function will insert a specified number of copies of
       *  the given data before the location specified by @a position.
       *
       *  Note that this kind of operation could be expensive for a
       *  %vector and if it is frequently used the user should
       *  consider using std::list.
       */
      void
      insert(iterator __position, size_type __n, const value_type& __x)
      { _M_fill_insert(__position, __n, __x); }

      /**
       *  @brief  Inserts a range into the %vector.
       *  @param  position  An iterator into the %vector.
       *  @param  first  An input iterator.
       *  @param  last   An input iterator.
       *
       *  This function will insert copies of the data in the range
       *  [first,last) into the %vector before the location specified
       *  by @a pos.
       *
       *  Note that this kind of operation could be expensive for a
       *  %vector and if it is frequently used the user should
       *  consider using std::list.
       */
      template<typename _InputIterator>
        void
        insert(iterator __position, _InputIterator __first,
	       _InputIterator __last)
        {
	  // Check whether it's an integral type.  If so, it's not an iterator.
	  typedef typename std::__is_integer<_InputIterator>::__type _Integral;
	  _M_insert_dispatch(__position, __first, __last, _Integral());
	}

      /**
       *  @brief  Remove element at given position.
       *  @param  position  Iterator pointing to element to be erased.
       *  @return  An iterator pointing to the next element (or end()).
       *
       *  This function will erase the element at the given position and thus
       *  shorten the %vector by one.
       *
       *  Note This operation could be expensive and if it is
       *  frequently used the user should consider using std::list.
       *  The user is also cautioned that this function only erases
       *  the element, and that if the element is itself a pointer,
       *  the pointed-to memory is not touched in any way.  Managing
       *  the pointer is the user's responsibility.
       */
      iterator
      erase(iterator __position);

      /**
       *  @brief  Remove a range of elements.
       *  @param  first  Iterator pointing to the first element to be erased.
       *  @param  last  Iterator pointing to one past the last element to be
       *                erased.
       *  @return  An iterator pointing to the element pointed to by @a last
       *           prior to erasing (or end()).
       *
       *  This function will erase the elements in the range [first,last) and
       *  shorten the %vector accordingly.
       *
       *  Note This operation could be expensive and if it is
       *  frequently used the user should consider using std::list.
       *  The user is also cautioned that this function only erases
       *  the elements, and that if the elements themselves are
       *  pointers, the pointed-to memory is not touched in any way.
       *  Managing the pointer is the user's responsibility.
       */
      iterator
      erase(iterator __first, iterator __last);

      /**
       *  @brief  Swaps data with another %vector.
       *  @param  x  A %vector of the same element and allocator types.
       *
       *  This exchanges the elements between two vectors in constant time.
       *  (Three pointers, so it should be quite fast.)
       *  Note that the global std::swap() function is specialized such that
       *  std::swap(v1,v2) will feed to this function.
       */
      void
#ifdef __GXX_EXPERIMENTAL_CXX0X__
      swap(vector&& __x)
#else
      swap(vector& __x)
#endif
      {
	std::swap(this->_M_impl._M_start, __x._M_impl._M_start);
	std::swap(this->_M_impl._M_finish, __x._M_impl._M_finish);
	std::swap(this->_M_impl._M_end_of_storage,
		  __x._M_impl._M_end_of_storage);

	// _GLIBCXX_RESOLVE_LIB_DEFECTS
	// 431. Swapping containers with unequal allocators.
	std::__alloc_swap<_Tp_alloc_type>::_S_do_it(_M_get_Tp_allocator(),
						    __x._M_get_Tp_allocator());
      }

      /**
       *  Erases all the elements.  Note that this function only erases the
       *  elements, and that if the elements themselves are pointers, the
       *  pointed-to memory is not touched in any way.  Managing the pointer is
       *  the user's responsibility.
       */
      void
      clear()
      { _M_erase_at_end(this->_M_impl._M_start); }

    protected:
      /**
       *  Memory expansion handler.  Uses the member allocation function to
       *  obtain @a n bytes of memory, and then copies [first,last) into it.
       */
      template<typename _ForwardIterator>
        pointer
        _M_allocate_and_copy(size_type __n,
			     _ForwardIterator __first, _ForwardIterator __last)
        {
	  pointer __result = this->_M_allocate(__n);
	  try
	    {
	      std::__uninitialized_copy_a(__first, __last, __result,
					  _M_get_Tp_allocator());
	      return __result;
	    }
	  catch(...)
	    {
	      _M_deallocate(__result, __n);
	      __throw_exception_again;
	    }
	}


      // Internal constructor functions follow.

      // Called by the range constructor to implement [23.1.1]/9

      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 438. Ambiguity in the "do the right thing" clause
      template<typename _Integer>
        void
        _M_initialize_dispatch(_Integer __n, _Integer __value, __true_type)
        {
	  this->_M_impl._M_start = _M_allocate(static_cast<size_type>(__n));
	  this->_M_impl._M_end_of_storage =
	    this->_M_impl._M_start + static_cast<size_type>(__n);
	  _M_fill_initialize(static_cast<size_type>(__n), __value);
	}

      // Called by the range constructor to implement [23.1.1]/9
      template<typename _InputIterator>
        void
        _M_initialize_dispatch(_InputIterator __first, _InputIterator __last,
			       __false_type)
        {
	  typedef typename std::iterator_traits<_InputIterator>::
	    iterator_category _IterCategory;
	  _M_range_initialize(__first, __last, _IterCategory());
	}

      // Called by the second initialize_dispatch above
      template<typename _InputIterator>
        void
        _M_range_initialize(_InputIterator __first,
			    _InputIterator __last, std::input_iterator_tag)
        {
	  for (; __first != __last; ++__first)
	    push_back(*__first);
	}

      // Called by the second initialize_dispatch above
      template<typename _ForwardIterator>
        void
        _M_range_initialize(_ForwardIterator __first,
			    _ForwardIterator __last, std::forward_iterator_tag)
        {
	  const size_type __n = std::distance(__first, __last);
	  this->_M_impl._M_start = this->_M_allocate(__n);
	  this->_M_impl._M_end_of_storage = this->_M_impl._M_start + __n;
	  this->_M_impl._M_finish =
	    std::__uninitialized_copy_a(__first, __last,
					this->_M_impl._M_start,
					_M_get_Tp_allocator());
	}

      // Called by the first initialize_dispatch above and by the
      // vector(n,value,a) constructor.
      void
      _M_fill_initialize(size_type __n, const value_type& __value)
      {
	std::__uninitialized_fill_n_a(this->_M_impl._M_start, __n, __value, 
				      _M_get_Tp_allocator());
	this->_M_impl._M_finish = this->_M_impl._M_end_of_storage;
      }


      // Internal assign functions follow.  The *_aux functions do the actual
      // assignment work for the range versions.

      // Called by the range assign to implement [23.1.1]/9

      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 438. Ambiguity in the "do the right thing" clause
      template<typename _Integer>
        void
        _M_assign_dispatch(_Integer __n, _Integer __val, __true_type)
        { _M_fill_assign(__n, __val); }

      // Called by the range assign to implement [23.1.1]/9
      template<typename _InputIterator>
        void
        _M_assign_dispatch(_InputIterator __first, _InputIterator __last,
			   __false_type)
        {
	  typedef typename std::iterator_traits<_InputIterator>::
	    iterator_category _IterCategory;
	  _M_assign_aux(__first, __last, _IterCategory());
	}

      // Called by the second assign_dispatch above
      template<typename _InputIterator>
        void
        _M_assign_aux(_InputIterator __first, _InputIterator __last,
		      std::input_iterator_tag);

      // Called by the second assign_dispatch above
      template<typename _ForwardIterator>
        void
        _M_assign_aux(_ForwardIterator __first, _ForwardIterator __last,
		      std::forward_iterator_tag);

      // Called by assign(n,t), and the range assign when it turns out
      // to be the same thing.
      void
      _M_fill_assign(size_type __n, const value_type& __val);


      // Internal insert functions follow.

      // Called by the range insert to implement [23.1.1]/9

      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 438. Ambiguity in the "do the right thing" clause
      template<typename _Integer>
        void
        _M_insert_dispatch(iterator __pos, _Integer __n, _Integer __val,
			   __true_type)
        { _M_fill_insert(__pos, __n, __val); }

      // Called by the range insert to implement [23.1.1]/9
      template<typename _InputIterator>
        void
        _M_insert_dispatch(iterator __pos, _InputIterator __first,
			   _InputIterator __last, __false_type)
        {
	  typedef typename std::iterator_traits<_InputIterator>::
	    iterator_category _IterCategory;
	  _M_range_insert(__pos, __first, __last, _IterCategory());
	}

      // Called by the second insert_dispatch above
      template<typename _InputIterator>
        void
        _M_range_insert(iterator __pos, _InputIterator __first,
			_InputIterator __last, std::input_iterator_tag);

      // Called by the second insert_dispatch above
      template<typename _ForwardIterator>
        void
        _M_range_insert(iterator __pos, _ForwardIterator __first,
			_ForwardIterator __last, std::forward_iterator_tag);

      // Called by insert(p,n,x), and the range insert when it turns out to be
      // the same thing.
      void
      _M_fill_insert(iterator __pos, size_type __n, const value_type& __x);

      // Called by insert(p,x)
#ifndef __GXX_EXPERIMENTAL_CXX0X__
      void
      _M_insert_aux(iterator __position, const value_type& __x);
#else
      template<typename... _Args>
        void
        _M_insert_aux(iterator __position, _Args&&... __args);
#endif

      // Called by the latter.
      size_type
      _M_check_len(size_type __n, const char* __s) const
      {
	if (max_size() - size() < __n)
	  __throw_length_error(__N(__s));

	const size_type __len = size() + std::max(size(), __n);
	return (__len < size() || __len > max_size()) ? max_size() : __len;
      }

      // Internal erase functions follow.

      // Called by erase(q1,q2), clear(), resize(), _M_fill_assign,
      // _M_assign_aux.
      void
      _M_erase_at_end(pointer __pos)
      {
	std::_Destroy(__pos, this->_M_impl._M_finish, _M_get_Tp_allocator());
	this->_M_impl._M_finish = __pos;
      }
    };


  /**
   *  @brief  Vector equality comparison.
   *  @param  x  A %vector.
   *  @param  y  A %vector of the same type as @a x.
   *  @return  True iff the size and elements of the vectors are equal.
   *
   *  This is an equivalence relation.  It is linear in the size of the
   *  vectors.  Vectors are considered equivalent if their sizes are equal,
   *  and if corresponding elements compare equal.
  */
  template<typename _Tp, typename _Alloc>
    inline bool
    operator==(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
    { return (__x.size() == __y.size()
	      && std::equal(__x.begin(), __x.end(), __y.begin())); }

  /**
   *  @brief  Vector ordering relation.
   *  @param  x  A %vector.
   *  @param  y  A %vector of the same type as @a x.
   *  @return  True iff @a x is lexicographically less than @a y.
   *
   *  This is a total ordering relation.  It is linear in the size of the
   *  vectors.  The elements must be comparable with @c <.
   *
   *  See std::lexicographical_compare() for how the determination is made.
  */
  template<typename _Tp, typename _Alloc>
    inline bool
    operator<(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
    { return std::lexicographical_compare(__x.begin(), __x.end(),
					  __y.begin(), __y.end()); }

  /// Based on operator==
  template<typename _Tp, typename _Alloc>
    inline bool
    operator!=(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
    { return !(__x == __y); }

  /// Based on operator<
  template<typename _Tp, typename _Alloc>
    inline bool
    operator>(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
    { return __y < __x; }

  /// Based on operator<
  template<typename _Tp, typename _Alloc>
    inline bool
    operator<=(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
    { return !(__y < __x); }

  /// Based on operator<
  template<typename _Tp, typename _Alloc>
    inline bool
    operator>=(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
    { return !(__x < __y); }

  /// See std::vector::swap().
  template<typename _Tp, typename _Alloc>
    inline void
    swap(vector<_Tp, _Alloc>& __x, vector<_Tp, _Alloc>& __y)
    { __x.swap(__y); }

#ifdef __GXX_EXPERIMENTAL_CXX0X__
  template<typename _Tp, typename _Alloc>
    inline void
    swap(vector<_Tp, _Alloc>&& __x, vector<_Tp, _Alloc>& __y)
    { __x.swap(__y); }

  template<typename _Tp, typename _Alloc>
    inline void
    swap(vector<_Tp, _Alloc>& __x, vector<_Tp, _Alloc>&& __y)
    { __x.swap(__y); }
#endif

_GLIBCXX_END_NESTED_NAMESPACE

#endif /* _STL_VECTOR_H */
// Locale support -*- C++ -*-

// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
// 2006, 2007, 2008
// 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.

/** @file locale_classes.h
 *  This is an internal header file, included by other library headers.
 *  You should not attempt to use it directly.
 */

//
// ISO C++ 14882: 22.1  Locales
//

#ifndef _LOCALE_CLASSES_H
#define _LOCALE_CLASSES_H 1

#pragma GCC system_header

#include <bits/localefwd.h>
#include <string>
#include <ext/atomicity.h>

_GLIBCXX_BEGIN_NAMESPACE(std)

  // 22.1.1 Class locale
  /**
   *  @brief  Container class for localization functionality.
   *
   *  The locale class is first a class wrapper for C library locales.  It is
   *  also an extensible container for user-defined localization.  A locale is
   *  a collection of facets that implement various localization features such
   *  as money, time, and number printing.
   *
   *  Constructing C++ locales does not change the C library locale.
   *
   *  This library supports efficient construction and copying of locales
   *  through a reference counting implementation of the locale class.
  */
  class locale
  {
  public:
    // Types:
    /// Definition of locale::category.
    typedef int	category;

    // Forward decls and friends:
    class facet;
    class id;
    class _Impl;

    friend class facet;
    friend class _Impl;

    template<typename _Facet>
      friend bool
      has_facet(const locale&) throw();

    template<typename _Facet>
      friend const _Facet&
      use_facet(const locale&);

    template<typename _Cache>
      friend struct __use_cache;

    //@{
    /**
     *  @brief  Category values.
     *
     *  The standard category values are none, ctype, numeric, collate, time,
     *  monetary, and messages.  They form a bitmask that supports union and
     *  intersection.  The category all is the union of these values.
     *
     *  NB: Order must match _S_facet_categories definition in locale.cc
    */
    static const category none		= 0;
    static const category ctype		= 1L << 0;
    static const category numeric	= 1L << 1;
    static const category collate	= 1L << 2;
    static const category time		= 1L << 3;
    static const category monetary	= 1L << 4;
    static const category messages	= 1L << 5;
    static const category all		= (ctype | numeric | collate |
					   time  | monetary | messages);
    //@}

    // Construct/copy/destroy:

    /**
     *  @brief  Default constructor.
     *
     *  Constructs a copy of the global locale.  If no locale has been
     *  explicitly set, this is the "C" locale.
    */
    locale() throw();

    /**
     *  @brief  Copy constructor.
     *
     *  Constructs a copy of @a other.
     *
     *  @param  other  The locale to copy.
    */
    locale(const locale& __other) throw();

    /**
     *  @brief  Named locale constructor.
     *
     *  Constructs a copy of the named C library locale.
     *
     *  @param  s  Name of the locale to construct.
     *  @throw  std::runtime_error if s is null or an undefined locale.
    */
    explicit
    locale(const char* __s);

    /**
     *  @brief  Construct locale with facets from another locale.
     *
     *  Constructs a copy of the locale @a base.  The facets specified by @a
     *  cat are replaced with those from the locale named by @a s.  If base is
     *  named, this locale instance will also be named.
     *
     *  @param  base  The locale to copy.
     *  @param  s  Name of the locale to use facets from.
     *  @param  cat  Set of categories defining the facets to use from s.
     *  @throw  std::runtime_error if s is null or an undefined locale.
    */
    locale(const locale& __base, const char* __s, category __cat);

    /**
     *  @brief  Construct locale with facets from another locale.
     *
     *  Constructs a copy of the locale @a base.  The facets specified by @a
     *  cat are replaced with those from the locale @a add.  If @a base and @a
     *  add are named, this locale instance will also be named.
     *
     *  @param  base  The locale to copy.
     *  @param  add  The locale to use facets from.
     *  @param  cat  Set of categories defining the facets to use from add.
    */
    locale(const locale& __base, const locale& __add, category __cat);

    /**
     *  @brief  Construct locale with another facet.
     *
     *  Constructs a copy of the locale @a other.  The facet @f is added to
     *  @other, replacing an existing facet of type Facet if there is one.  If
     *  @f is null, this locale is a copy of @a other.
     *
     *  @param  other  The locale to copy.
     *  @param  f  The facet to add in.
    */
    template<typename _Facet>
      locale(const locale& __other, _Facet* __f);

    /// Locale destructor.
    ~locale() throw();

    /**
     *  @brief  Assignment operator.
     *
     *  Set this locale to be a copy of @a other.
     *
     *  @param  other  The locale to copy.
     *  @return  A reference to this locale.
    */
    const locale&
    operator=(const locale& __other) throw();

    /**
     *  @brief  Construct locale with another facet.
     *
     *  Constructs and returns a new copy of this locale.  Adds or replaces an
     *  existing facet of type Facet from the locale @a other into the new
     *  locale.
     *
     *  @param  Facet  The facet type to copy from other
     *  @param  other  The locale to copy from.
     *  @return  Newly constructed locale.
     *  @throw  std::runtime_error if other has no facet of type Facet.
    */
    template<typename _Facet>
      locale
      combine(const locale& __other) const;

    // Locale operations:
    /**
     *  @brief  Return locale name.
     *  @return  Locale name or "*" if unnamed.
    */
    string
    name() const;

    /**
     *  @brief  Locale equality.
     *
     *  @param  other  The locale to compare against.
     *  @return  True if other and this refer to the same locale instance, are
     *		 copies, or have the same name.  False otherwise.
    */
    bool
    operator==(const locale& __other) const throw ();

    /**
     *  @brief  Locale inequality.
     *
     *  @param  other  The locale to compare against.
     *  @return  ! (*this == other)
    */
    bool
    operator!=(const locale& __other) const throw ()
    { return !(this->operator==(__other)); }

    /**
     *  @brief  Compare two strings according to collate.
     *
     *  Template operator to compare two strings using the compare function of
     *  the collate facet in this locale.  One use is to provide the locale to
     *  the sort function.  For example, a vector v of strings could be sorted
     *  according to locale loc by doing:
     *  @code
     *  std::sort(v.begin(), v.end(), loc);
     *  @endcode
     *
     *  @param  s1  First string to compare.
     *  @param  s2  Second string to compare.
     *  @return  True if collate<Char> facet compares s1 < s2, else false.
    */
    template<typename _Char, typename _Traits, typename _Alloc>
      bool
      operator()(const basic_string<_Char, _Traits, _Alloc>& __s1,
		 const basic_string<_Char, _Traits, _Alloc>& __s2) const;

    // Global locale objects:
    /**
     *  @brief  Set global locale
     *
     *  This function sets the global locale to the argument and returns a
     *  copy of the previous global locale.  If the argument has a name, it
     *  will also call std::setlocale(LC_ALL, loc.name()).
     *
     *  @param  locale  The new locale to make global.
     *  @return  Copy of the old global locale.
    */
    static locale
    global(const locale&);

    /**
     *  @brief  Return reference to the "C" locale.
    */
    static const locale&
    classic();

  private:
    // The (shared) implementation
    _Impl*		_M_impl;

    // The "C" reference locale
    static _Impl*       _S_classic;

    // Current global locale
    static _Impl*	_S_global;

    // Names of underlying locale categories.
    // NB: locale::global() has to know how to modify all the
    // underlying categories, not just the ones required by the C++
    // standard.
    static const char* const* const _S_categories;

    // Number of standard categories. For C++, these categories are
    // collate, ctype, monetary, numeric, time, and messages. These
    // directly correspond to ISO C99 macros LC_COLLATE, LC_CTYPE,
    // LC_MONETARY, LC_NUMERIC, and LC_TIME. In addition, POSIX (IEEE
    // 1003.1-2001) specifies LC_MESSAGES.
    // In addition to the standard categories, the underlying
    // operating system is allowed to define extra LC_*
    // macros. For GNU systems, the following are also valid:
    // LC_PAPER, LC_NAME, LC_ADDRESS, LC_TELEPHONE, LC_MEASUREMENT,
    // and LC_IDENTIFICATION.
    enum { _S_categories_size = 6 + _GLIBCXX_NUM_CATEGORIES };

#ifdef __GTHREADS
    static __gthread_once_t _S_once;
#endif

    explicit
    lo