2 #ifndef BOOST_MPL_MATH_IS_EVEN_HPP_INCLUDED
3 #define BOOST_MPL_MATH_IS_EVEN_HPP_INCLUDED
5 // Copyright Aleksey Gurtovoy 2000-2004
7 // Distributed under the Boost Software License, Version 1.0.
8 // (See accompanying file LICENSE_1_0.txt or copy at
9 // http://www.boost.org/LICENSE_1_0.txt)
11 // See http://www.boost.org/libs/mpl for documentation.
13 // $Id: is_even.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
14 // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $
17 #include <boost/mpl/bool.hpp>
18 #include <boost/mpl/aux_/na_spec.hpp>
19 #include <boost/mpl/aux_/lambda_support.hpp>
20 #include <boost/mpl/aux_/config/msvc.hpp>
21 #include <boost/mpl/aux_/config/workaround.hpp>
23 namespace boost { namespace mpl {
25 #if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
31 enum { value = (N::value % 2) == 0 };
32 typedef bool_<value> type;
38 typename BOOST_MPL_AUX_NA_PARAM(N)
41 #if BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
42 : aux::is_even_base<N>::type
44 : bool_<((N::value % 2) == 0)>
47 BOOST_MPL_AUX_LAMBDA_SUPPORT(1,is_even,(N))
50 BOOST_MPL_AUX_NA_SPEC(1, is_even)
54 #endif // BOOST_MPL_MATH_IS_EVEN_HPP_INCLUDED