64 lines
1.7 KiB
C++
64 lines
1.7 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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#include <boost/hana/ext/std/integral_constant.hpp>
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#include <boost/hana/assert.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/functional/always.hpp>
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#include <boost/hana/integral_constant.hpp>
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#include <boost/hana/not.hpp>
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#include <boost/hana/tuple.hpp>
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#include <laws/base.hpp>
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#include <laws/logical.hpp>
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#include <type_traits>
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namespace hana = boost::hana;
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int main() {
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// eval_if
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{
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auto t = hana::test::ct_eq<3>{};
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auto e = hana::test::ct_eq<4>{};
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::eval_if(std::true_type{}, hana::always(t), hana::always(e)),
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t
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::eval_if(std::false_type{}, hana::always(t), hana::always(e)),
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e
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));
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}
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// not_
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{
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::not_(std::true_type{}),
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std::false_type{}
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::not_(std::false_type{}),
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std::true_type{}
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));
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}
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auto ints = hana::make_tuple(
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std::integral_constant<int, -2>{},
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std::integral_constant<int, 0>{},
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std::integral_constant<int, 1>{},
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std::integral_constant<int, 3>{}
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);
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auto bools = hana::make_tuple(std::true_type{}, std::false_type{});
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// laws
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hana::test::TestLogical<hana::ext::std::integral_constant_tag<int>>{ints};
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hana::test::TestLogical<hana::ext::std::integral_constant_tag<bool>>{bools};
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}
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