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/core/to.hpp> 7 #include <boost/hana/equal.hpp> 8 #include <boost/hana/ext/std/ratio.hpp> 9 10 #include <laws/base.hpp> 11 #include <support/cnumeric.hpp> 12 13 #include <ratio> 14 #include <utility> 15 namespace hana = boost::hana; 16 17 main()18int main() { 19 // Conversion from a Constant to a std::ratio 20 { 21 BOOST_HANA_CONSTANT_CHECK(hana::equal( 22 hana::to<hana::ext::std::ratio_tag>(cnumeric<int, 0>), 23 std::ratio<0>{} 24 )); 25 26 BOOST_HANA_CONSTANT_CHECK(hana::equal( 27 hana::to<hana::ext::std::ratio_tag>(cnumeric<int, 1>), 28 std::ratio<1>{} 29 )); 30 31 BOOST_HANA_CONSTANT_CHECK(hana::equal( 32 hana::to<hana::ext::std::ratio_tag>(cnumeric<int, 3>), 33 std::ratio<3>{} 34 )); 35 } 36 } 37