48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
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//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// type_traits
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// integral_constant
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#include <type_traits>
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#include <cassert>
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int main()
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{
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typedef std::integral_constant<int, 5> _5;
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static_assert(_5::value == 5, "");
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static_assert((std::is_same<_5::value_type, int>::value), "");
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static_assert((std::is_same<_5::type, _5>::value), "");
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#ifndef _LIBCPP_HAS_NO_CONSTEXPR
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static_assert((_5() == 5), "");
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#else
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assert(_5() == 5);
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#endif
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#if _LIBCPP_STD_VER > 11
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static_assert ( _5{}() == 5, "" );
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static_assert ( std::true_type{}(), "" );
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#endif
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static_assert(std::false_type::value == false, "");
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static_assert((std::is_same<std::false_type::value_type, bool>::value), "");
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static_assert((std::is_same<std::false_type::type, std::false_type>::value), "");
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static_assert(std::true_type::value == true, "");
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static_assert((std::is_same<std::true_type::value_type, bool>::value), "");
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static_assert((std::is_same<std::true_type::type, std::true_type>::value), "");
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std::false_type f1;
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std::false_type f2 = f1;
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std::true_type t1;
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std::true_type t2 = t1;
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}
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