#ifndef BOOST_MPL_MATH_IS_EVEN_HPP_INCLUDED

#define BOOST_MPL_MATH_IS_EVEN_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.

// $Source: /cvsroot/boost/boost/boost/mpl/math/is_even.hpp,v $

// $Date: 2004/09/02 15:41:01 $

// $Revision: 1.5 $

#include <boost/mpl/bool.hpp>

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

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

#include <boost/mpl/aux_/config/msvc.hpp>

#include <boost/mpl/aux_/config/workaround.hpp>

namespace boost { namespace mpl {

#if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)

namespace aux

{

  template <class N>

  struct is_even_base

  {

      enum { value = (N::value % 2) == 0 };

      typedef bool_<value> type;

  };

}

#endif 

template<

      typename BOOST_MPL_AUX_NA_PARAM(N)

    >

struct is_even

#if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)

  : aux::is_even_base<N>::type

#else

  : bool_<((N::value % 2) == 0)>

#endif 

{

    BOOST_MPL_AUX_LAMBDA_SUPPORT(1,is_even,(N))

};

BOOST_MPL_AUX_NA_SPEC(1, is_even)

}}

#endif // BOOST_MPL_MATH_IS_EVEN_HPP_INCLUDED