// class template tuple -*- C++ -*-

// Copyright (C) 2004 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.

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

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

/** @file 
 *  This is a TR1 C++ Library header. 
 */

// Chris Jefferson <chris@bubblescope.net>

// This header is automatically generated: see maketuple.c for details.

#ifndef _TUPLE
#define _TUPLE 1

#include <tr1/utility>
#include <tr1/functional>

namespace std
{
namespace tr1
{
  // An implementation specific class which is used in the tuple class
  // when the tuple is not maximum possible size.
  struct _NullClass { };

  template<typename _Tp0 = _NullClass, typename _Tp1 = _NullClass,
	   typename _Tp2 = _NullClass, typename _Tp3 = _NullClass,
	   typename _Tp4 = _NullClass, typename _Tp5 = _NullClass,
	   typename _Tp6 = _NullClass, typename _Tp7 = _NullClass,
	   typename _Tp8 = _NullClass, typename _Tp9 = _NullClass>
    class tuple;

  /// Gives the type of the ith element of a given tuple type.
  template<int __i, typename _Tp>
    struct tuple_element;

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9>
    struct tuple_element<0, tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6,
				  _Tp7, _Tp8, _Tp9> >
    { typedef _Tp0 type; };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9>
    struct tuple_element<1, tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6,
				  _Tp7, _Tp8, _Tp9> >
    { typedef _Tp1 type; };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9>
    struct tuple_element<2, tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6,
				  _Tp7, _Tp8, _Tp9> >
    { typedef _Tp2 type; };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9>
    struct tuple_element<3, tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6,
				  _Tp7, _Tp8, _Tp9> >
    { typedef _Tp3 type; };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9>
    struct tuple_element<4, tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6,
				  _Tp7, _Tp8, _Tp9> >
    { typedef _Tp4 type; };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9>
    struct tuple_element<5, tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6,
				  _Tp7, _Tp8, _Tp9> >
    { typedef _Tp5 type; };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9>
    struct tuple_element<6, tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6,
				  _Tp7, _Tp8, _Tp9> >
    { typedef _Tp6 type; };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9>
    struct tuple_element<7, tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6,
				  _Tp7, _Tp8, _Tp9> >
    { typedef _Tp7 type; };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9>
    struct tuple_element<8, tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6,
				  _Tp7, _Tp8, _Tp9> >
    { typedef _Tp8 type; };

  /// @brief  class tuple_element
  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9>
    struct tuple_element<9, tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6,
				  _Tp7, _Tp8, _Tp9> >
    { typedef _Tp9 type; };

  /// Finds the size of a given tuple type.
  template<typename _Tp>
    struct tuple_size;

  template<>
    struct tuple_size<tuple<_NullClass, _NullClass, _NullClass, _NullClass,
			    _NullClass, _NullClass, _NullClass, _NullClass,
			    _NullClass, _NullClass> >
    { static const int value = 0; };

  template< typename _Tp0>
    struct tuple_size<tuple< _Tp0, _NullClass, _NullClass, _NullClass,
			    _NullClass, _NullClass, _NullClass, _NullClass,
			    _NullClass, _NullClass> >
    { static const int value = 1; };

  template<typename _Tp0, typename _Tp1>
    struct tuple_size<tuple<_Tp0, _Tp1, _NullClass, _NullClass, _NullClass,
			    _NullClass, _NullClass, _NullClass, _NullClass,
			    _NullClass> >
    { static const int value = 2; };

  template<typename _Tp0, typename _Tp1, typename _Tp2>
    struct tuple_size<tuple<_Tp0, _Tp1, _Tp2, _NullClass, _NullClass,
			    _NullClass, _NullClass, _NullClass, _NullClass,
			    _NullClass> >
    { static const int value = 3; };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3>
    struct tuple_size<tuple<_Tp0, _Tp1, _Tp2, _Tp3, _NullClass, _NullClass,
			    _NullClass, _NullClass, _NullClass, _NullClass> >
    { static const int value = 4; };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4>
    struct tuple_size<tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _NullClass,
			    _NullClass, _NullClass, _NullClass, _NullClass> >
    { static const int value = 5; };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5>
    struct tuple_size<tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _NullClass,
			    _NullClass, _NullClass, _NullClass> >
    { static const int value = 6; };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6>
    struct tuple_size<tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6, 
			    _NullClass, _NullClass, _NullClass> >
    { static const int value = 7; };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7>
    struct tuple_size<tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6, _Tp7, 
			    _NullClass, _NullClass> >
    { static const int value = 8; };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8>
    struct tuple_size<tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6, _Tp7,
			    _Tp8,  _NullClass> >
    { static const int value = 9; };

  /// @brief  class tuple_size
  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9>
    struct tuple_size<tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6, _Tp7,
			    _Tp8, _Tp9> >
    { static const int value = 10; };

  // Adds a const reference to a non-reference type.
  template<typename _Tp>
    struct __add_c_ref
    { typedef const _Tp& type; };

  template<typename _Tp>
    struct __add_c_ref<_Tp&>
    { typedef _Tp& type; };

  // Adds a reference to a non-reference type.
  template<typename _Tp>
    struct __add_ref
    { typedef _Tp& type; };

  template<typename _Tp>
    struct __add_ref<_Tp&>
    { typedef _Tp& type; };

  // The empty tuple.
  template<>
    class tuple<_NullClass, _NullClass, _NullClass, _NullClass, _NullClass,
	        _NullClass, _NullClass, _NullClass, _NullClass, _NullClass>
    {
    public:
      tuple()
      { }

      tuple(const tuple& __in)
      { }

      tuple& operator=(const tuple& __in)
      { return *this; }
    };

  template< typename _Tp0>
    class tuple< _Tp0, _NullClass, _NullClass, _NullClass, _NullClass,
	        _NullClass, _NullClass, _NullClass, _NullClass, _NullClass>
    {
      _Tp0 _M_t0;

    public:
      tuple()
      { }

      explicit tuple( typename __add_c_ref<_Tp0>::type __in0):
         _M_t0(__in0)
      { }

      tuple(const tuple& __in):
         _M_t0(__in._M_t0)
      { }

      template< typename _Up0>
        tuple(const tuple< _Up0>& __in):
	   _M_t0(__in._M_t0)
        { }

      tuple&
      operator=(const tuple& __in)
      {
        _M_t0=__in._M_t0;
        return *this;
      }

      template< typename _Up0>
        tuple&
        operator=(const tuple< _Up0>& __in)
        {
	  _M_t0=__in._M_t0;
	  return *this;
        }

      template<int __i, typename _Up>
        friend class __get_helper;
      template<typename, typename, typename, typename, typename, typename,
	       typename, typename, typename, typename>
        friend class tuple;
  };

  template<typename _Tp0, typename _Tp1>
    class tuple<_Tp0, _Tp1, _NullClass, _NullClass, _NullClass, _NullClass,
	        _NullClass, _NullClass, _NullClass, _NullClass>
    {
      _Tp0 _M_t0;
      _Tp1 _M_t1;

    public:
      tuple()
      { }

      explicit tuple(typename __add_c_ref<_Tp0>::type __in0,
		     typename __add_c_ref<_Tp1>::type __in1):
        _M_t0(__in0), _M_t1(__in1)
      { }

      tuple(const tuple& __in):
        _M_t0(__in._M_t0), _M_t1(__in._M_t1)
      { }

      template<typename _Up0, typename _Up1>
        tuple(const tuple<_Up0, _Up1>& __in):
	  _M_t0(__in._M_t0), _M_t1(__in._M_t1)
        { }

      template<class _Up1, class _Up2>
        tuple(const std::pair<_Up1, _Up2>& __u):
           _M_t0(__u.first), _M_t1(__u.second)
        { }

      tuple&
      operator=(const tuple& __in)
      {
        _M_t0=__in._M_t0;
        _M_t1=__in._M_t1;
        return *this;
      }

      template<typename _Up0, typename _Up1>
        tuple&
        operator=(const tuple<_Up0, _Up1>& __in)
        {
	  _M_t0=__in._M_t0;
	  _M_t1=__in._M_t1;
	  return *this;
        }

      template<int __i, typename _Up>
        friend class __get_helper;
      template<typename, typename, typename, typename, typename, typename,
	       typename, typename, typename, typename>
        friend class tuple;
  };

  template<typename _Tp0, typename _Tp1, typename _Tp2>
    class tuple<_Tp0, _Tp1, _Tp2, _NullClass, _NullClass, _NullClass,
	        _NullClass, _NullClass, _NullClass, _NullClass>
    {
      _Tp0 _M_t0;
      _Tp1 _M_t1;
      _Tp2 _M_t2;

    public:
      tuple()
      { }

      explicit tuple(typename __add_c_ref<_Tp0>::type __in0,
		     typename __add_c_ref<_Tp1>::type __in1,
		     typename __add_c_ref<_Tp2>::type __in2):
        _M_t0(__in0), _M_t1(__in1), _M_t2(__in2)
      { }

      tuple(const tuple& __in):
        _M_t0(__in._M_t0), _M_t1(__in._M_t1), _M_t2(__in._M_t2)
      { }

      template<typename _Up0, typename _Up1, typename _Up2>
        tuple(const tuple<_Up0, _Up1, _Up2>& __in):
	  _M_t0(__in._M_t0), _M_t1(__in._M_t1), _M_t2(__in._M_t2)
        { }

      tuple&
      operator=(const tuple& __in)
      {
        _M_t0=__in._M_t0;
        _M_t1=__in._M_t1;
        _M_t2=__in._M_t2;
        return *this;
      }

      template<typename _Up0, typename _Up1, typename _Up2>
        tuple&
        operator=(const tuple<_Up0, _Up1, _Up2>& __in)
        {
	  _M_t0=__in._M_t0;
	  _M_t1=__in._M_t1;
	  _M_t2=__in._M_t2;
	  return *this;
        }

      template<int __i, typename _Up>
        friend class __get_helper;
      template<typename, typename, typename, typename, typename, typename,
	       typename, typename, typename, typename>
        friend class tuple;
  };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3>
    class tuple<_Tp0, _Tp1, _Tp2, _Tp3, _NullClass, _NullClass, _NullClass,
	        _NullClass, _NullClass, _NullClass>
    {
      _Tp0 _M_t0;
      _Tp1 _M_t1;
      _Tp2 _M_t2;
      _Tp3 _M_t3;

    public:
      tuple()
      { }

      explicit tuple(typename __add_c_ref<_Tp0>::type __in0,
		     typename __add_c_ref<_Tp1>::type __in1,
		     typename __add_c_ref<_Tp2>::type __in2,
		     typename __add_c_ref<_Tp3>::type __in3):
        _M_t0(__in0), _M_t1(__in1), _M_t2(__in2), _M_t3(__in3)
      { }

      tuple(const tuple& __in):
        _M_t0(__in._M_t0), _M_t1(__in._M_t1), _M_t2(__in._M_t2),
        _M_t3(__in._M_t3)
      { }

      template<typename _Up0, typename _Up1, typename _Up2, typename _Up3>
        tuple(const tuple<_Up0, _Up1, _Up2, _Up3>& __in):
	  _M_t0(__in._M_t0), _M_t1(__in._M_t1), _M_t2(__in._M_t2),
	  _M_t3(__in._M_t3)
        { }

      tuple&
      operator=(const tuple& __in)
      {
        _M_t0=__in._M_t0;
        _M_t1=__in._M_t1;
        _M_t2=__in._M_t2;
        _M_t3=__in._M_t3;
        return *this;
      }

      template<typename _Up0, typename _Up1, typename _Up2, typename _Up3>
        tuple&
        operator=(const tuple<_Up0, _Up1, _Up2, _Up3>& __in)
        {
	  _M_t0=__in._M_t0;
	  _M_t1=__in._M_t1;
	  _M_t2=__in._M_t2;
	  _M_t3=__in._M_t3;
	  return *this;
        }

      template<int __i, typename _Up>
        friend class __get_helper;
      template<typename, typename, typename, typename, typename, typename,
	       typename, typename, typename, typename>
        friend class tuple;
  };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4>
    class tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _NullClass, _NullClass,
	        _NullClass, _NullClass, _NullClass>
    {
      _Tp0 _M_t0;
      _Tp1 _M_t1;
      _Tp2 _M_t2;
      _Tp3 _M_t3;
      _Tp4 _M_t4;

    public:
      tuple()
      { }

      explicit tuple(typename __add_c_ref<_Tp0>::type __in0,
		     typename __add_c_ref<_Tp1>::type __in1,
		     typename __add_c_ref<_Tp2>::type __in2,
		     typename __add_c_ref<_Tp3>::type __in3,
		     typename __add_c_ref<_Tp4>::type __in4):
        _M_t0(__in0), _M_t1(__in1), _M_t2(__in2), _M_t3(__in3), _M_t4(__in4)
      { }

      tuple(const tuple& __in):
        _M_t0(__in._M_t0), _M_t1(__in._M_t1), _M_t2(__in._M_t2),
        _M_t3(__in._M_t3), _M_t4(__in._M_t4)
      { }

      template<typename _Up0, typename _Up1, typename _Up2, typename _Up3,
	       typename _Up4>
        tuple(const tuple<_Up0, _Up1, _Up2, _Up3, _Up4>& __in):
	  _M_t0(__in._M_t0), _M_t1(__in._M_t1), _M_t2(__in._M_t2),
	  _M_t3(__in._M_t3), _M_t4(__in._M_t4)
        { }

      tuple&
      operator=(const tuple& __in)
      {
        _M_t0=__in._M_t0;
        _M_t1=__in._M_t1;
        _M_t2=__in._M_t2;
        _M_t3=__in._M_t3;
        _M_t4=__in._M_t4;
        return *this;
      }

      template<typename _Up0, typename _Up1, typename _Up2, typename _Up3,
	       typename _Up4>
        tuple&
        operator=(const tuple<_Up0, _Up1, _Up2, _Up3, _Up4>& __in)
        {
	  _M_t0=__in._M_t0;
	  _M_t1=__in._M_t1;
	  _M_t2=__in._M_t2;
	  _M_t3=__in._M_t3;
	  _M_t4=__in._M_t4;
	  return *this;
        }

      template<int __i, typename _Up>
        friend class __get_helper;
      template<typename, typename, typename, typename, typename, typename,
	       typename, typename, typename, typename>
        friend class tuple;
  };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5>
    class tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _NullClass, _NullClass,
	        _NullClass, _NullClass>
    {
      _Tp0 _M_t0;
      _Tp1 _M_t1;
      _Tp2 _M_t2;
      _Tp3 _M_t3;
      _Tp4 _M_t4;
      _Tp5 _M_t5;

    public:
      tuple()
      { }

      explicit tuple(typename __add_c_ref<_Tp0>::type __in0,
		     typename __add_c_ref<_Tp1>::type __in1,
		     typename __add_c_ref<_Tp2>::type __in2,
		     typename __add_c_ref<_Tp3>::type __in3,
		     typename __add_c_ref<_Tp4>::type __in4,
		     typename __add_c_ref<_Tp5>::type __in5):
        _M_t0(__in0), _M_t1(__in1), _M_t2(__in2), _M_t3(__in3), _M_t4(__in4),
        _M_t5(__in5)
      { }

      tuple(const tuple& __in):
        _M_t0(__in._M_t0), _M_t1(__in._M_t1), _M_t2(__in._M_t2),
        _M_t3(__in._M_t3), _M_t4(__in._M_t4), _M_t5(__in._M_t5)
      { }

      template<typename _Up0, typename _Up1, typename _Up2, typename _Up3,
	       typename _Up4, typename _Up5>
        tuple(const tuple<_Up0, _Up1, _Up2, _Up3, _Up4, _Up5>& __in):
	  _M_t0(__in._M_t0), _M_t1(__in._M_t1), _M_t2(__in._M_t2),
	  _M_t3(__in._M_t3), _M_t4(__in._M_t4), _M_t5(__in._M_t5)
        { }

      tuple&
      operator=(const tuple& __in)
      {
        _M_t0=__in._M_t0;
        _M_t1=__in._M_t1;
        _M_t2=__in._M_t2;
        _M_t3=__in._M_t3;
        _M_t4=__in._M_t4;
        _M_t5=__in._M_t5;
        return *this;
      }

      template<typename _Up0, typename _Up1, typename _Up2, typename _Up3,
	       typename _Up4, typename _Up5>
        tuple&
        operator=(const tuple<_Up0, _Up1, _Up2, _Up3, _Up4, _Up5>& __in)
        {
	  _M_t0=__in._M_t0;
	  _M_t1=__in._M_t1;
	  _M_t2=__in._M_t2;
	  _M_t3=__in._M_t3;
	  _M_t4=__in._M_t4;
	  _M_t5=__in._M_t5;
	  return *this;
        }

      template<int __i, typename _Up>
        friend class __get_helper;
      template<typename, typename, typename, typename, typename, typename,
	       typename, typename, typename, typename>
        friend class tuple;
  };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6>
    class tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6, _NullClass,
	        _NullClass, _NullClass>
    {
      _Tp0 _M_t0;
      _Tp1 _M_t1;
      _Tp2 _M_t2;
      _Tp3 _M_t3;
      _Tp4 _M_t4;
      _Tp5 _M_t5;
      _Tp6 _M_t6;

    public:
      tuple()
      { }

      explicit tuple(typename __add_c_ref<_Tp0>::type __in0,
		     typename __add_c_ref<_Tp1>::type __in1,
		     typename __add_c_ref<_Tp2>::type __in2,
		     typename __add_c_ref<_Tp3>::type __in3,
		     typename __add_c_ref<_Tp4>::type __in4,
		     typename __add_c_ref<_Tp5>::type __in5,
		     typename __add_c_ref<_Tp6>::type __in6):
        _M_t0(__in0), _M_t1(__in1), _M_t2(__in2), _M_t3(__in3), _M_t4(__in4),
        _M_t5(__in5), _M_t6(__in6)
      { }

      tuple(const tuple& __in):
        _M_t0(__in._M_t0), _M_t1(__in._M_t1), _M_t2(__in._M_t2),
        _M_t3(__in._M_t3), _M_t4(__in._M_t4), _M_t5(__in._M_t5),
        _M_t6(__in._M_t6)
      { }

      template<typename _Up0, typename _Up1, typename _Up2, typename _Up3,
	       typename _Up4, typename _Up5, typename _Up6>
        tuple(const tuple<_Up0, _Up1, _Up2, _Up3, _Up4, _Up5, _Up6>& __in):
	  _M_t0(__in._M_t0), _M_t1(__in._M_t1), _M_t2(__in._M_t2),
	  _M_t3(__in._M_t3), _M_t4(__in._M_t4), _M_t5(__in._M_t5),
	  _M_t6(__in._M_t6)
        { }

      tuple&
      operator=(const tuple& __in)
      {
        _M_t0=__in._M_t0;
        _M_t1=__in._M_t1;
        _M_t2=__in._M_t2;
        _M_t3=__in._M_t3;
        _M_t4=__in._M_t4;
        _M_t5=__in._M_t5;
        _M_t6=__in._M_t6;
        return *this;
      }

      template<typename _Up0, typename _Up1, typename _Up2, typename _Up3,
	       typename _Up4, typename _Up5, typename _Up6>
        tuple&
        operator=(const tuple<_Up0, _Up1, _Up2, _Up3, _Up4, _Up5,
			      _Up6>& __in)
        {
	  _M_t0=__in._M_t0;
	  _M_t1=__in._M_t1;
	  _M_t2=__in._M_t2;
	  _M_t3=__in._M_t3;
	  _M_t4=__in._M_t4;
	  _M_t5=__in._M_t5;
	  _M_t6=__in._M_t6;
	  return *this;
        }

      template<int __i, typename _Up>
        friend class __get_helper;
      template<typename, typename, typename, typename, typename, typename,
	       typename, typename, typename, typename>
        friend class tuple;
  };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7>
    class tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6, _Tp7, _NullClass,
	        _NullClass>
    {
      _Tp0 _M_t0;
      _Tp1 _M_t1;
      _Tp2 _M_t2;
      _Tp3 _M_t3;
      _Tp4 _M_t4;
      _Tp5 _M_t5;
      _Tp6 _M_t6;
      _Tp7 _M_t7;

    public:
      tuple()
      { }

      explicit tuple(typename __add_c_ref<_Tp0>::type __in0,
		     typename __add_c_ref<_Tp1>::type __in1,
		     typename __add_c_ref<_Tp2>::type __in2,
		     typename __add_c_ref<_Tp3>::type __in3,
		     typename __add_c_ref<_Tp4>::type __in4,
		     typename __add_c_ref<_Tp5>::type __in5,
		     typename __add_c_ref<_Tp6>::type __in6,
		     typename __add_c_ref<_Tp7>::type __in7):
        _M_t0(__in0), _M_t1(__in1), _M_t2(__in2), _M_t3(__in3), _M_t4(__in4),
        _M_t5(__in5), _M_t6(__in6), _M_t7(__in7)
      { }

      tuple(const tuple& __in):
        _M_t0(__in._M_t0), _M_t1(__in._M_t1), _M_t2(__in._M_t2),
        _M_t3(__in._M_t3), _M_t4(__in._M_t4), _M_t5(__in._M_t5),
        _M_t6(__in._M_t6), _M_t7(__in._M_t7)
      { }

      template<typename _Up0, typename _Up1, typename _Up2, typename _Up3,
	       typename _Up4, typename _Up5, typename _Up6, typename _Up7>
        tuple(const tuple<_Up0, _Up1, _Up2, _Up3, _Up4, _Up5, _Up6,
			  _Up7>& __in):
	  _M_t0(__in._M_t0), _M_t1(__in._M_t1), _M_t2(__in._M_t2),
	  _M_t3(__in._M_t3), _M_t4(__in._M_t4), _M_t5(__in._M_t5),
	  _M_t6(__in._M_t6), _M_t7(__in._M_t7)
        { }

      tuple&
      operator=(const tuple& __in)
      {
        _M_t0=__in._M_t0;
        _M_t1=__in._M_t1;
        _M_t2=__in._M_t2;
        _M_t3=__in._M_t3;
        _M_t4=__in._M_t4;
        _M_t5=__in._M_t5;
        _M_t6=__in._M_t6;
        _M_t7=__in._M_t7;
        return *this;
      }

      template<typename _Up0, typename _Up1, typename _Up2, typename _Up3,
	       typename _Up4, typename _Up5, typename _Up6, typename _Up7>
        tuple&
        operator=(const tuple<_Up0, _Up1, _Up2, _Up3, _Up4, _Up5, _Up6,
			      _Up7>& __in)
        {
	  _M_t0=__in._M_t0;
	  _M_t1=__in._M_t1;
	  _M_t2=__in._M_t2;
	  _M_t3=__in._M_t3;
	  _M_t4=__in._M_t4;
	  _M_t5=__in._M_t5;
	  _M_t6=__in._M_t6;
	  _M_t7=__in._M_t7;
	  return *this;
        }

      template<int __i, typename _Up>
        friend class __get_helper;
      template<typename, typename, typename, typename, typename, typename,
	       typename, typename, typename, typename>
        friend class tuple;
  };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8>
    class tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6, _Tp7, _Tp8, 
	        _NullClass>
    {
      _Tp0 _M_t0;
      _Tp1 _M_t1;
      _Tp2 _M_t2;
      _Tp3 _M_t3;
      _Tp4 _M_t4;
      _Tp5 _M_t5;
      _Tp6 _M_t6;
      _Tp7 _M_t7;
      _Tp8 _M_t8;

    public:
      tuple()
      { }

      explicit tuple(typename __add_c_ref<_Tp0>::type __in0,
		     typename __add_c_ref<_Tp1>::type __in1,
		     typename __add_c_ref<_Tp2>::type __in2,
		     typename __add_c_ref<_Tp3>::type __in3,
		     typename __add_c_ref<_Tp4>::type __in4,
		     typename __add_c_ref<_Tp5>::type __in5,
		     typename __add_c_ref<_Tp6>::type __in6,
		     typename __add_c_ref<_Tp7>::type __in7,
		     typename __add_c_ref<_Tp8>::type __in8):
        _M_t0(__in0), _M_t1(__in1), _M_t2(__in2), _M_t3(__in3), _M_t4(__in4),
        _M_t5(__in5), _M_t6(__in6), _M_t7(__in7), _M_t8(__in8)
      { }

      tuple(const tuple& __in):
        _M_t0(__in._M_t0), _M_t1(__in._M_t1), _M_t2(__in._M_t2),
        _M_t3(__in._M_t3), _M_t4(__in._M_t4), _M_t5(__in._M_t5),
        _M_t6(__in._M_t6), _M_t7(__in._M_t7), _M_t8(__in._M_t8)
      { }

      template<typename _Up0, typename _Up1, typename _Up2, typename _Up3,
	       typename _Up4, typename _Up5, typename _Up6, typename _Up7,
	       typename _Up8>
        tuple(const tuple<_Up0, _Up1, _Up2, _Up3, _Up4, _Up5, _Up6, _Up7,
			  _Up8>& __in):
	  _M_t0(__in._M_t0), _M_t1(__in._M_t1), _M_t2(__in._M_t2),
	  _M_t3(__in._M_t3), _M_t4(__in._M_t4), _M_t5(__in._M_t5),
	  _M_t6(__in._M_t6), _M_t7(__in._M_t7), _M_t8(__in._M_t8)
        { }

      tuple&
      operator=(const tuple& __in)
      {
        _M_t0=__in._M_t0;
        _M_t1=__in._M_t1;
        _M_t2=__in._M_t2;
        _M_t3=__in._M_t3;
        _M_t4=__in._M_t4;
        _M_t5=__in._M_t5;
        _M_t6=__in._M_t6;
        _M_t7=__in._M_t7;
        _M_t8=__in._M_t8;
        return *this;
      }

      template<typename _Up0, typename _Up1, typename _Up2, typename _Up3,
	       typename _Up4, typename _Up5, typename _Up6, typename _Up7,
	       typename _Up8>
        tuple&
        operator=(const tuple<_Up0, _Up1, _Up2, _Up3, _Up4, _Up5, _Up6, _Up7,
			      _Up8>& __in)
        {
	  _M_t0=__in._M_t0;
	  _M_t1=__in._M_t1;
	  _M_t2=__in._M_t2;
	  _M_t3=__in._M_t3;
	  _M_t4=__in._M_t4;
	  _M_t5=__in._M_t5;
	  _M_t6=__in._M_t6;
	  _M_t7=__in._M_t7;
	  _M_t8=__in._M_t8;
	  return *this;
        }

      template<int __i, typename _Up>
        friend class __get_helper;
      template<typename, typename, typename, typename, typename, typename,
	       typename, typename, typename, typename>
        friend class tuple;
  };

  /// @brief  Template class tuple
  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9>
    class tuple
    {
      _Tp0 _M_t0;
      _Tp1 _M_t1;
      _Tp2 _M_t2;
      _Tp3 _M_t3;
      _Tp4 _M_t4;
      _Tp5 _M_t5;
      _Tp6 _M_t6;
      _Tp7 _M_t7;
      _Tp8 _M_t8;
      _Tp9 _M_t9;

    public:
      tuple()
      { }

      explicit tuple(typename __add_c_ref<_Tp0>::type __in0,
		     typename __add_c_ref<_Tp1>::type __in1,
		     typename __add_c_ref<_Tp2>::type __in2,
		     typename __add_c_ref<_Tp3>::type __in3,
		     typename __add_c_ref<_Tp4>::type __in4,
		     typename __add_c_ref<_Tp5>::type __in5,
		     typename __add_c_ref<_Tp6>::type __in6,
		     typename __add_c_ref<_Tp7>::type __in7,
		     typename __add_c_ref<_Tp8>::type __in8,
		     typename __add_c_ref<_Tp9>::type __in9):
        _M_t0(__in0), _M_t1(__in1), _M_t2(__in2), _M_t3(__in3), _M_t4(__in4),
        _M_t5(__in5), _M_t6(__in6), _M_t7(__in7), _M_t8(__in8), _M_t9(__in9)
      { }

      tuple(const tuple& __in):
        _M_t0(__in._M_t0), _M_t1(__in._M_t1), _M_t2(__in._M_t2),
        _M_t3(__in._M_t3), _M_t4(__in._M_t4), _M_t5(__in._M_t5),
        _M_t6(__in._M_t6), _M_t7(__in._M_t7), _M_t8(__in._M_t8),
        _M_t9(__in._M_t9)
      { }

      template<typename _Up0, typename _Up1, typename _Up2, typename _Up3,
	       typename _Up4, typename _Up5, typename _Up6, typename _Up7,
	       typename _Up8, typename _Up9>
        tuple(const tuple<_Up0, _Up1, _Up2, _Up3, _Up4, _Up5, _Up6, _Up7, _Up8,
			  _Up9>& __in):
	  _M_t0(__in._M_t0), _M_t1(__in._M_t1), _M_t2(__in._M_t2),
	  _M_t3(__in._M_t3), _M_t4(__in._M_t4), _M_t5(__in._M_t5),
	  _M_t6(__in._M_t6), _M_t7(__in._M_t7), _M_t8(__in._M_t8),
	  _M_t9(__in._M_t9)
        { }

      tuple&
      operator=(const tuple& __in)
      {
        _M_t0=__in._M_t0;
        _M_t1=__in._M_t1;
        _M_t2=__in._M_t2;
        _M_t3=__in._M_t3;
        _M_t4=__in._M_t4;
        _M_t5=__in._M_t5;
        _M_t6=__in._M_t6;
        _M_t7=__in._M_t7;
        _M_t8=__in._M_t8;
        _M_t9=__in._M_t9;
        return *this;
      }

      template<typename _Up0, typename _Up1, typename _Up2, typename _Up3,
	       typename _Up4, typename _Up5, typename _Up6, typename _Up7,
	       typename _Up8, typename _Up9>
        tuple&
        operator=(const tuple<_Up0, _Up1, _Up2, _Up3, _Up4, _Up5, _Up6, _Up7,
			      _Up8, _Up9>& __in)
        {
	  _M_t0=__in._M_t0;
	  _M_t1=__in._M_t1;
	  _M_t2=__in._M_t2;
	  _M_t3=__in._M_t3;
	  _M_t4=__in._M_t4;
	  _M_t5=__in._M_t5;
	  _M_t6=__in._M_t6;
	  _M_t7=__in._M_t7;
	  _M_t8=__in._M_t8;
	  _M_t9=__in._M_t9;
	  return *this;
        }

      template<int __i, typename _Up>
        friend class __get_helper;
      template<typename, typename, typename, typename, typename, typename,
	       typename, typename, typename, typename>
        friend class tuple;
  };

  // Class used in the implementation of get
  template<int __i, typename _Tp>
    struct __get_helper;

  template<typename _Tp>
    struct __get_helper<0, _Tp>
    {
      static typename __add_ref<typename tuple_element<0, _Tp>::type>::type
      get_value(_Tp& __in)
      { return __in._M_t0; }

      static typename __add_c_ref<typename tuple_element<0, _Tp>::type>::type
      get_value(const _Tp& __in)
      { return __in._M_t0; }
    };

  template<typename _Tp>
    struct __get_helper<1, _Tp>
    {
      static typename __add_ref<typename tuple_element<1, _Tp>::type>::type
      get_value(_Tp& __in)
      { return __in._M_t1; }

      static typename __add_c_ref<typename tuple_element<1, _Tp>::type>::type
      get_value(const _Tp& __in)
      { return __in._M_t1; }
    };

  template<typename _Tp>
    struct __get_helper<2, _Tp>
    {
      static typename __add_ref<typename tuple_element<2, _Tp>::type>::type
      get_value(_Tp& __in)
      { return __in._M_t2; }

      static typename __add_c_ref<typename tuple_element<2, _Tp>::type>::type
      get_value(const _Tp& __in)
      { return __in._M_t2; }
    };

  template<typename _Tp>
    struct __get_helper<3, _Tp>
    {
      static typename __add_ref<typename tuple_element<3, _Tp>::type>::type
      get_value(_Tp& __in)
      { return __in._M_t3; }

      static typename __add_c_ref<typename tuple_element<3, _Tp>::type>::type
      get_value(const _Tp& __in)
      { return __in._M_t3; }
    };

  template<typename _Tp>
    struct __get_helper<4, _Tp>
    {
      static typename __add_ref<typename tuple_element<4, _Tp>::type>::type
      get_value(_Tp& __in)
      { return __in._M_t4; }

      static typename __add_c_ref<typename tuple_element<4, _Tp>::type>::type
      get_value(const _Tp& __in)
      { return __in._M_t4; }
    };

  template<typename _Tp>
    struct __get_helper<5, _Tp>
    {
      static typename __add_ref<typename tuple_element<5, _Tp>::type>::type
      get_value(_Tp& __in)
      { return __in._M_t5; }

      static typename __add_c_ref<typename tuple_element<5, _Tp>::type>::type
      get_value(const _Tp& __in)
      { return __in._M_t5; }
    };

  template<typename _Tp>
    struct __get_helper<6, _Tp>
    {
      static typename __add_ref<typename tuple_element<6, _Tp>::type>::type
      get_value(_Tp& __in)
      { return __in._M_t6; }

      static typename __add_c_ref<typename tuple_element<6, _Tp>::type>::type
      get_value(const _Tp& __in)
      { return __in._M_t6; }
    };

  template<typename _Tp>
    struct __get_helper<7, _Tp>
    {
      static typename __add_ref<typename tuple_element<7, _Tp>::type>::type
      get_value(_Tp& __in)
      { return __in._M_t7; }

      static typename __add_c_ref<typename tuple_element<7, _Tp>::type>::type
      get_value(const _Tp& __in)
      { return __in._M_t7; }
    };

  template<typename _Tp>
    struct __get_helper<8, _Tp>
    {
      static typename __add_ref<typename tuple_element<8, _Tp>::type>::type
      get_value(_Tp& __in)
      { return __in._M_t8; }

      static typename __add_c_ref<typename tuple_element<8, _Tp>::type>::type
      get_value(const _Tp& __in)
      { return __in._M_t8; }
    };

  template<typename _Tp>
    struct __get_helper<9, _Tp>
    {
      static typename __add_ref<typename tuple_element<9, _Tp>::type>::type
      get_value(_Tp& __in)
      { return __in._M_t9; }

      static typename __add_c_ref<typename tuple_element<9, _Tp>::type>::type
      get_value(const _Tp& __in)
      { return __in._M_t9; }
    };

  // Returns a reference to the ith element of a tuple.
  // Any const or non-const ref elements are returned with their original type.
  template<int __i, typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
		    typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
		    typename _Tp8, typename _Tp9>
    typename __add_ref<typename tuple_element<__i, tuple<_Tp0, _Tp1, _Tp2,
							 _Tp3, _Tp4, _Tp5,
							 _Tp6, _Tp7, _Tp8,
							 _Tp9> >::type>::type
    get(tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6, _Tp7, _Tp8,
	      _Tp9>& __t)
    {
      return __get_helper<__i, tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6,
				     _Tp7, _Tp8, _Tp9> >::get_value(__t);
    }

  // Returns a const reference to the ith element of a tuple.
  // Any const or non-const ref elements are returned with their original type.
  template<int __i, typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
		    typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
		    typename _Tp8, typename _Tp9>
    typename __add_c_ref<typename tuple_element<__i, tuple<_Tp0, _Tp1, _Tp2,
							   _Tp3, _Tp4, _Tp5,
							   _Tp6, _Tp7, _Tp8,
							   _Tp9> >::type>::type
    get(const tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6, _Tp7, _Tp8,
		    _Tp9>& __t)
    {
      return __get_helper<__i, tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6,
				     _Tp7, _Tp8, _Tp9> >::get_value(__t);
    }

  // This class helps construct the various comparison operations on tuples
  template<int __check_equal_size, int __i, int __j, typename _Tp, typename _Up>
    struct __tuple_compare;

  template<int __i, int __j, typename _Tp, typename _Up>
    struct __tuple_compare<0, __i, __j, _Tp, _Up>
    {
      static bool __eq(const _Tp& __t, const _Up& __u)
      {
        return get<__i>(__t) == get<__i>(__u) &&
           __tuple_compare<0, __i+1, __j, _Tp, _Up>::__eq(__t, __u);
      }
      static bool __less(const _Tp& __t, const _Up& __u)
      {
        return (get<__i>(__t) < get<__i>(__u)) || !(get<__i>(__u) < get<__i>(__t)) &&
           __tuple_compare<0, __i+1, __j, _Tp, _Up>::__less(__t, __u);
      }
    };

  template<int __i, typename _Tp, typename _Up>
    struct __tuple_compare<0, __i, __i, _Tp, _Up>
    {
      static bool __eq(const _Tp&, const _Up&)
      { return true; }
      static bool __less(const _Tp&, const _Up&)
      { return false; }
    };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9, typename _Up0, typename _Up1,
	   typename _Up2, typename _Up3, typename _Up4, typename _Up5,
	   typename _Up6, typename _Up7, typename _Up8, typename _Up9>
  bool
  operator==(const tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6, _Tp7, _Tp8, _Tp9>& __t,
	     const tuple<_Up0, _Up1, _Up2, _Up3, _Up4, _Up5, _Up6, _Up7, _Up8, _Up9>& __u)
  {
    typedef tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6, _Tp7, _Tp8,
		  _Tp9> _Tp;
    typedef tuple<_Up0, _Up1, _Up2, _Up3, _Up4, _Up5, _Up6, _Up7, _Up8,
		  _Up9> _Up;
    return __tuple_compare<tuple_size<_Tp>::value -
     tuple_size<_Tp>::value, 0,
      tuple_size<_Tp>::value, _Tp, _Up>::__eq(__t, __u);
  }

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9, typename _Up0, typename _Up1,
	   typename _Up2, typename _Up3, typename _Up4, typename _Up5,
	   typename _Up6, typename _Up7, typename _Up8, typename _Up9>
  bool
  operator<(const tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6, _Tp7, _Tp8, _Tp9>& __t,
	    const tuple<_Up0, _Up1, _Up2, _Up3, _Up4, _Up5, _Up6, _Up7, _Up8, _Up9>& __u)
  {
    typedef tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6, _Tp7, _Tp8,
		  _Tp9> _Tp;
    typedef tuple<_Up0, _Up1, _Up2, _Up3, _Up4, _Up5, _Up6, _Up7, _Up8,
		  _Up9> _Up;
    return __tuple_compare<tuple_size<_Tp>::value -
     tuple_size<_Tp>::value, 0,
      tuple_size<_Tp>::value, _Tp, _Up>::__less(__t, __u);
  }

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9, typename _Up0, typename _Up1,
	   typename _Up2, typename _Up3, typename _Up4, typename _Up5,
	   typename _Up6, typename _Up7, typename _Up8, typename _Up9>
  bool
  operator!=(const tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6, _Tp7, _Tp8, _Tp9>& __t,
	     const tuple<_Up0, _Up1, _Up2, _Up3, _Up4, _Up5, _Up6, _Up7, _Up8, _Up9>& __u)
  {
      return !(__t == __u);
  }
  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9, typename _Up0, typename _Up1,
	   typename _Up2, typename _Up3, typename _Up4, typename _Up5,
	   typename _Up6, typename _Up7, typename _Up8, typename _Up9>
  bool
  operator>(const tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6, _Tp7, _Tp8, _Tp9>& __t,
	    const tuple<_Up0, _Up1, _Up2, _Up3, _Up4, _Up5, _Up6, _Up7, _Up8, _Up9>& __u)
  {
      return __u < __t;
  }
  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9, typename _Up0, typename _Up1,
	   typename _Up2, typename _Up3, typename _Up4, typename _Up5,
	   typename _Up6, typename _Up7, typename _Up8, typename _Up9>
  bool
  operator<=(const tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6, _Tp7, _Tp8, _Tp9>& __t,
	     const tuple<_Up0, _Up1, _Up2, _Up3, _Up4, _Up5, _Up6, _Up7, _Up8, _Up9>& __u)
  {
      return !(__u < __t);
  }
  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9, typename _Up0, typename _Up1,
	   typename _Up2, typename _Up3, typename _Up4, typename _Up5,
	   typename _Up6, typename _Up7, typename _Up8, typename _Up9>
  bool
  operator>=(const tuple<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6, _Tp7, _Tp8, _Tp9>& __t,
	     const tuple<_Up0, _Up1, _Up2, _Up3, _Up4, _Up5, _Up6, _Up7, _Up8, _Up9>& __u)
  {
      return !(__t < __u);
  }

  // Helper which adds a reference to a type when given a reference_wrapper
  template<typename _Tp>
    struct __strip_reference_wrapper
    {
        typedef _Tp __type;
    };

  template<typename _Tp>
    struct __strip_reference_wrapper<reference_wrapper<_Tp> >
    {
      typedef _Tp& __type;
    };

  template<typename _Tp>
    struct __strip_reference_wrapper<const reference_wrapper<_Tp> >
    {
        typedef _Tp& __type;
    };

  template<typename _Tp0 = _NullClass, typename _Tp1 = _NullClass,
	   typename _Tp2 = _NullClass, typename _Tp3 = _NullClass,
	   typename _Tp4 = _NullClass, typename _Tp5 = _NullClass,
	   typename _Tp6 = _NullClass, typename _Tp7 = _NullClass,
	   typename _Tp8 = _NullClass, typename _Tp9 = _NullClass>
    struct __stripped_tuple_type
    {
      typedef tuple<typename __strip_reference_wrapper<_Tp0>::__type,
		    typename __strip_reference_wrapper<_Tp1>::__type,
		    typename __strip_reference_wrapper<_Tp2>::__type,
		    typename __strip_reference_wrapper<_Tp3>::__type,
		    typename __strip_reference_wrapper<_Tp4>::__type,
		    typename __strip_reference_wrapper<_Tp5>::__type,
		    typename __strip_reference_wrapper<_Tp6>::__type,
		    typename __strip_reference_wrapper<_Tp7>::__type,
		    typename __strip_reference_wrapper<_Tp8>::__type,
		    typename __strip_reference_wrapper<_Tp9>::__type>      __type;
    };

  tuple<>
  make_tuple()
  { return tuple<>(); }

  template< typename _Tp0>
    typename __stripped_tuple_type< _Tp0>::__type
    make_tuple( _Tp0 __t0)
    {
      return typename  __stripped_tuple_type< _Tp0>::
        __type( __t0);
    }

  template<typename _Tp0, typename _Tp1>
    typename __stripped_tuple_type<_Tp0, _Tp1>::__type
    make_tuple(_Tp0 __t0, _Tp1 __t1)
    {
      return typename  __stripped_tuple_type<_Tp0, _Tp1>::
        __type(__t0, __t1);
    }

  template<typename _Tp0, typename _Tp1, typename _Tp2>
    typename __stripped_tuple_type<_Tp0, _Tp1, _Tp2>::__type
    make_tuple(_Tp0 __t0, _Tp1 __t1, _Tp2 __t2)
    {
      return typename  __stripped_tuple_type<_Tp0, _Tp1, _Tp2>::
        __type(__t0, __t1, __t2);
    }

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3>
    typename __stripped_tuple_type<_Tp0, _Tp1, _Tp2, _Tp3>::__type
    make_tuple(_Tp0 __t0, _Tp1 __t1, _Tp2 __t2, _Tp3 __t3)
    {
      return typename  __stripped_tuple_type<_Tp0, _Tp1, _Tp2, _Tp3>::
        __type(__t0, __t1, __t2, __t3);
    }

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4>
    typename __stripped_tuple_type<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4>::__type
    make_tuple(_Tp0 __t0, _Tp1 __t1, _Tp2 __t2, _Tp3 __t3, _Tp4 __t4)
    {
      return typename  __stripped_tuple_type<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4>::
        __type(__t0, __t1, __t2, __t3, __t4);
    }

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5>
    typename __stripped_tuple_type<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4,
				   _Tp5>::__type
    make_tuple(_Tp0 __t0, _Tp1 __t1, _Tp2 __t2, _Tp3 __t3, _Tp4 __t4,
	       _Tp5 __t5)
    {
      return typename  __stripped_tuple_type<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4,
					     _Tp5>::
        __type(__t0, __t1, __t2, __t3, __t4, __t5);
    }

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6>
    typename __stripped_tuple_type<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5,
				   _Tp6>::__type
    make_tuple(_Tp0 __t0, _Tp1 __t1, _Tp2 __t2, _Tp3 __t3, _Tp4 __t4,
	       _Tp5 __t5, _Tp6 __t6)
    {
      return typename  __stripped_tuple_type<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4,
					     _Tp5, _Tp6>::
        __type(__t0, __t1, __t2, __t3, __t4, __t5, __t6);
    }

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7>
    typename __stripped_tuple_type<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6,
				   _Tp7>::__type
    make_tuple(_Tp0 __t0, _Tp1 __t1, _Tp2 __t2, _Tp3 __t3, _Tp4 __t4,
	       _Tp5 __t5, _Tp6 __t6, _Tp7 __t7)
    {
      return typename  __stripped_tuple_type<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4,
					     _Tp5, _Tp6, _Tp7>::
        __type(__t0, __t1, __t2, __t3, __t4, __t5, __t6, __t7);
    }

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8>
    typename __stripped_tuple_type<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6,
				   _Tp7, _Tp8>::__type
    make_tuple(_Tp0 __t0, _Tp1 __t1, _Tp2 __t2, _Tp3 __t3, _Tp4 __t4,
	       _Tp5 __t5, _Tp6 __t6, _Tp7 __t7, _Tp8 __t8)
    {
      return typename  __stripped_tuple_type<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4,
					     _Tp5, _Tp6, _Tp7, _Tp8>::
        __type(__t0, __t1, __t2, __t3, __t4, __t5, __t6, __t7, __t8);
    }

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9>
    typename __stripped_tuple_type<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4, _Tp5, _Tp6,
				   _Tp7, _Tp8, _Tp9>::__type
    make_tuple(_Tp0 __t0, _Tp1 __t1, _Tp2 __t2, _Tp3 __t3, _Tp4 __t4,
	       _Tp5 __t5, _Tp6 __t6, _Tp7 __t7, _Tp8 __t8, _Tp9 __t9)
    {
      return typename  __stripped_tuple_type<_Tp0, _Tp1, _Tp2, _Tp3, _Tp4,
					     _Tp5, _Tp6, _Tp7, _Tp8, _Tp9>::
        __type(__t0, __t1, __t2, __t3, __t4, __t5, __t6, __t7, __t8, __t9);
    }

  // A class (and instance) which can be used in 'tie' when an element
  // of a tuple is not required
  struct swallow_assign
  {
    template<class T>
    swallow_assign&
      operator=(const T&)
      { return *this; }
  };

  // TODO: Put this in some kind of shared file.
  namespace
  {
    swallow_assign ignore;
  };


  // Forms a tuple of references to a list of variables.
  template< typename _Tp0>
    tuple< _Tp0&>
    tie( _Tp0& __t0)
    {
      return make_tuple( ref(__t0));
    };

  template<typename _Tp0, typename _Tp1>
    tuple<_Tp0&, _Tp1&>
    tie(_Tp0& __t0, _Tp1& __t1)
    {
      return make_tuple(ref(__t0), ref(__t1));
    };

  template<typename _Tp0, typename _Tp1, typename _Tp2>
    tuple<_Tp0&, _Tp1&, _Tp2&>
    tie(_Tp0& __t0, _Tp1& __t1, _Tp2& __t2)
    {
      return make_tuple(ref(__t0), ref(__t1), ref(__t2));
    };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3>
    tuple<_Tp0&, _Tp1&, _Tp2&, _Tp3&>
    tie(_Tp0& __t0, _Tp1& __t1, _Tp2& __t2, _Tp3& __t3)
    {
      return make_tuple(ref(__t0), ref(__t1), ref(__t2), ref(__t3));
    };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4>
    tuple<_Tp0&, _Tp1&, _Tp2&, _Tp3&, _Tp4&>
    tie(_Tp0& __t0, _Tp1& __t1, _Tp2& __t2, _Tp3& __t3, _Tp4& __t4)
    {
      return make_tuple(ref(__t0), ref(__t1), ref(__t2), ref(__t3),
		        ref(__t4));
    };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5>
    tuple<_Tp0&, _Tp1&, _Tp2&, _Tp3&, _Tp4&, _Tp5&>
    tie(_Tp0& __t0, _Tp1& __t1, _Tp2& __t2, _Tp3& __t3, _Tp4& __t4,
        _Tp5& __t5)
    {
      return make_tuple(ref(__t0), ref(__t1), ref(__t2), ref(__t3), ref(__t4),
		        ref(__t5));
    };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6>
    tuple<_Tp0&, _Tp1&, _Tp2&, _Tp3&, _Tp4&, _Tp5&, _Tp6&>
    tie(_Tp0& __t0, _Tp1& __t1, _Tp2& __t2, _Tp3& __t3, _Tp4& __t4, _Tp5& __t5,
        _Tp6& __t6)
    {
      return make_tuple(ref(__t0), ref(__t1), ref(__t2), ref(__t3), ref(__t4),
		        ref(__t5), ref(__t6));
    };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7>
    tuple<_Tp0&, _Tp1&, _Tp2&, _Tp3&, _Tp4&, _Tp5&, _Tp6&, _Tp7&>
    tie(_Tp0& __t0, _Tp1& __t1, _Tp2& __t2, _Tp3& __t3, _Tp4& __t4, _Tp5& __t5,
        _Tp6& __t6, _Tp7& __t7)
    {
      return make_tuple(ref(__t0), ref(__t1), ref(__t2), ref(__t3), ref(__t4),
		        ref(__t5), ref(__t6), ref(__t7));
    };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8>
    tuple<_Tp0&, _Tp1&, _Tp2&, _Tp3&, _Tp4&, _Tp5&, _Tp6&, _Tp7&, _Tp8&>
    tie(_Tp0& __t0, _Tp1& __t1, _Tp2& __t2, _Tp3& __t3, _Tp4& __t4, _Tp5& __t5,
        _Tp6& __t6, _Tp7& __t7, _Tp8& __t8)
    {
      return make_tuple(ref(__t0), ref(__t1), ref(__t2), ref(__t3), ref(__t4),
		        ref(__t5), ref(__t6), ref(__t7), ref(__t8));
    };

  template<typename _Tp0, typename _Tp1, typename _Tp2, typename _Tp3,
	   typename _Tp4, typename _Tp5, typename _Tp6, typename _Tp7,
	   typename _Tp8, typename _Tp9>
    tuple<_Tp0&, _Tp1&, _Tp2&, _Tp3&, _Tp4&, _Tp5&, _Tp6&, _Tp7&, _Tp8&,
	  _Tp9&>
    tie(_Tp0& __t0, _Tp1& __t1, _Tp2& __t2, _Tp3& __t3, _Tp4& __t4, _Tp5& __t5,
        _Tp6& __t6, _Tp7& __t7, _Tp8& __t8, _Tp9& __t9)
    {
      return make_tuple(ref(__t0), ref(__t1), ref(__t2), ref(__t3), ref(__t4),
		        ref(__t5), ref(__t6), ref(__t7), ref(__t8),
		        ref(__t9));
    };

}
}

#endif