1 /*! 2 @file 3 Defines `boost::hana::EuclideanRing`. 4 5 @copyright Louis Dionne 2013-2017 6 Distributed under the Boost Software License, Version 1.0. 7 (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) 8 */ 9 10 #ifndef BOOST_HANA_CONCEPT_EUCLIDEAN_RING_HPP 11 #define BOOST_HANA_CONCEPT_EUCLIDEAN_RING_HPP 12 13 #include <boost/hana/fwd/concept/euclidean_ring.hpp> 14 15 #include <boost/hana/config.hpp> 16 #include <boost/hana/core/default.hpp> 17 #include <boost/hana/core/tag_of.hpp> 18 #include <boost/hana/detail/integral_constant.hpp> 19 #include <boost/hana/div.hpp> 20 #include <boost/hana/mod.hpp> 21 22 23 BOOST_HANA_NAMESPACE_BEGIN 24 template <typename R> 25 struct EuclideanRing 26 : hana::integral_constant<bool, 27 !is_default<mod_impl<typename tag_of<R>::type, 28 typename tag_of<R>::type>>::value && 29 !is_default<div_impl<typename tag_of<R>::type, 30 typename tag_of<R>::type>>::value 31 > 32 { }; 33 BOOST_HANA_NAMESPACE_END 34 35 #endif // !BOOST_HANA_CONCEPT_EUCLIDEAN_RING_HPP 36