1 #ifndef DOUBLE_NUMBER_HPP 2 #define DOUBLE_NUMBER_HPP 3 4 // Copyright Abel Sinkovics (abel@sinkovics.hu) 2012. 5 // Distributed under the Boost Software License, Version 1.0. 6 // (See accompanying file LICENSE_1_0.txt or copy at 7 // http://www.boost.org/LICENSE_1_0.txt) 8 9 #include <boost/mpl/int.hpp> 10 #include <boost/mpl/times.hpp> 11 12 template <class N> 13 struct double_number : 14 boost::mpl::times<typename N::type, boost::mpl::int_<2> > 15 {}; 16 17 #endif 18 19