#ifndef BOOST_MPL_AT_HPP_INCLUDED

#define BOOST_MPL_AT_HPP_INCLUDED

// Copyright Aleksey Gurtovoy 2000-2004

//

// Distributed under the Boost Software License, Version 1.0. 

// (See accompanying file LICENSE_1_0.txt or copy at 

// http://www.boost.org/LICENSE_1_0.txt)

//

// See http://www.boost.org/libs/mpl for documentation.

// $Id: at.hpp 49267 2008-10-11 06:19:02Z agurtovoy $

// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $

// $Revision: 49267 $

#include <boost/mpl/at_fwd.hpp>

#include <boost/mpl/aux_/at_impl.hpp>

#include <boost/mpl/long.hpp>

#include <boost/mpl/sequence_tag.hpp>

#include <boost/mpl/aux_/na_spec.hpp>

#include <boost/mpl/aux_/lambda_support.hpp>

#include <boost/mpl/aux_/nttp_decl.hpp>

namespace boost { namespace mpl {

template<

      typename BOOST_MPL_AUX_NA_PARAM(Sequence)

    , typename BOOST_MPL_AUX_NA_PARAM(N)

    >

struct at

    : at_impl< typename sequence_tag<Sequence>::type >

        ::template apply< Sequence,N >

{

    BOOST_MPL_AUX_LAMBDA_SUPPORT(2,at,(Sequence,N))

};

template<

      typename Sequence

    , BOOST_MPL_AUX_NTTP_DECL(long, N)

    >

struct at_c

    : at_impl< typename sequence_tag<Sequence>::type >

        ::template apply< Sequence,mpl::long_<N> >

{

};

BOOST_MPL_AUX_NA_SPEC(2, at)

}}

#endif // BOOST_MPL_AT_HPP_INCLUDED