56 lines
1.5 KiB
C++
56 lines
1.5 KiB
C++
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// Copyright 2017 Peter Dimov.
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//
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// Distributed under the Boost Software License, Version 1.0.
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//
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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#include <boost/mp11/algorithm.hpp>
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#include <boost/mp11/list.hpp>
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#include <boost/mp11/integral.hpp>
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#include <boost/core/lightweight_test_trait.hpp>
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#include <type_traits>
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#include <tuple>
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using boost::mp11::mp_bool;
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template<class T, class U> using sizeof_less = mp_bool<(sizeof(T) < sizeof(U))>;
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int main()
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{
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using boost::mp11::mp_list;
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using boost::mp11::mp_max_element;
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{
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using L1 = mp_list<void>;
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_max_element<L1, sizeof_less>, void>));
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using L2 = mp_list<char[2], char[4], char[3], char[1]>;
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_max_element<L2, sizeof_less>, char[4]>));
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using L3 = mp_list<char[2], char[4], char[2], char[3], char[1], char[2], char[1]>;
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_max_element<L3, sizeof_less>, char[4]>));
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}
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{
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using L1 = std::tuple<void>;
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_max_element<L1, sizeof_less>, void>));
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using L2 = std::tuple<char[2], char[4], char[3], char[1]>;
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_max_element<L2, sizeof_less>, char[4]>));
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using L3 = std::tuple<char[2], char[4], char[2], char[3], char[1], char[2], char[1]>;
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_max_element<L3, sizeof_less>, char[4]>));
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}
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return boost::report_errors();
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}
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