34 lines
1.1 KiB
C++
34 lines
1.1 KiB
C++
// Copyright Louis Dionne 2013-2017
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_HANA_EXAMPLE_CPPCON_2014_MATRIX_COMPARABLE_HPP
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#define BOOST_HANA_EXAMPLE_CPPCON_2014_MATRIX_COMPARABLE_HPP
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#include "matrix.hpp"
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#include <boost/hana/all.hpp>
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#include <boost/hana/bool.hpp>
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#include <boost/hana/equal.hpp>
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#include <boost/hana/eval_if.hpp>
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#include <boost/hana/zip_with.hpp>
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namespace boost { namespace hana {
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template <unsigned R1, unsigned C1, unsigned R2, unsigned C2>
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struct equal_impl<cppcon::Matrix<R1, C1>, cppcon::Matrix<R2, C2>> {
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template <typename M1, typename M2>
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static constexpr auto apply(M1 const& m1, M2 const& m2) {
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return eval_if(bool_c<R1 == R2 && C1 == C2>,
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[&](auto _) {
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return all(zip_with(_(equal), cppcon::rows(m1),
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cppcon::rows(m2)));
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},
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[] { return false_c; }
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);
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}
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};
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}}
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#endif // !BOOST_HANA_EXAMPLE_CPPCON_2014_MATRIX_COMPARABLE_HPP
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