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- // Copyright Louis Dionne 2013-2017
- // Distributed under the Boost Software License, Version 1.0.
- // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
- #ifndef BOOST_HANA_EXAMPLE_CPPCON_2014_MATRIX_MONOID_HPP
- #define BOOST_HANA_EXAMPLE_CPPCON_2014_MATRIX_MONOID_HPP
- #include "matrix.hpp"
- #include <boost/hana/integral_constant.hpp>
- #include <boost/hana/concept/sequence.hpp>
- #include <boost/hana/concept/monoid.hpp>
- #include <boost/hana/range.hpp>
- namespace boost { namespace hana {
- template <unsigned R, unsigned C>
- struct plus_impl<cppcon::Matrix<R, C>, cppcon::Matrix<R, C>> {
- template <typename M1, typename M2>
- static constexpr decltype(auto) apply(M1&& m1, M2&& m2) {
- return element_wise(plus)(
- std::forward<M1>(m1),
- std::forward<M2>(m2)
- );
- }
- };
- template <unsigned R, unsigned C>
- struct zero_impl<cppcon::Matrix<R, C>> {
- static constexpr decltype(auto) apply() {
- auto zeros = replicate(int_<0>, int_<C>);
- return unpack(replicate(zeros, int_<R>), cppcon::matrix);
- }
- };
- }}
- #endif // !BOOST_HANA_EXAMPLE_CPPCON_2014_MATRIX_MONOID_HPP
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