1 // Copyright Louis Dionne 2013-2017 2 // Distributed under the Boost Software License, Version 1.0. 3 // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) 4 5 #include <boost/hana/assert.hpp> 6 #include <boost/hana/equal.hpp> 7 #include <boost/hana/ext/std/ratio.hpp> 8 #include <boost/hana/minus.hpp> 9 10 #include <ratio> 11 namespace hana = boost::hana; 12 13 main()14int main() { 15 BOOST_HANA_CONSTANT_CHECK(hana::equal( 16 hana::minus(std::ratio<3, 4>{}, std::ratio<5, 10>{}), 17 std::ratio<3*10 - 5*4, 4*10>{} 18 )); 19 } 20