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33 lines
896 B
C++
33 lines
896 B
C++
/*
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@copyright Louis Dionne 2014
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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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*/
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#include <boost/hana/integral.hpp>
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#include <boost/hana/detail/static_assert.hpp>
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#include <boost/hana/type.hpp>
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#include <cstddef>
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using namespace boost::hana;
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int main() {
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// value(...)
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static_assert(value(size_t<0>) == 0, "");
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static_assert(value(size_t<1>) == 1, "");
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static_assert(value(int_<-3>) == -3, "");
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// decltype(value(...))
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BOOST_HANA_STATIC_ASSERT(decltype_(value(size_t<0>)) == type<std::size_t>);
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BOOST_HANA_STATIC_ASSERT(decltype_(value(int_<-3>)) == type<int>);
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// conversions
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constexpr std::size_t a = size_t<0>, b = size_t<1>;
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static_assert(a == 0 && b == 1, "");
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constexpr int c = int_<0>, d = int_<-3>;
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static_assert(c == 0 && d == -3, "");
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}
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