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53 lines
1.5 KiB
C++
53 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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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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#include "test_macros.h"
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int main(int, char**)
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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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#if TEST_STD_VER >= 11
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static_assert((_5() == 5), "");
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#endif
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assert(_5() == 5);
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#if TEST_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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assert(!f2);
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std::true_type t1;
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std::true_type t2 = t1;
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assert(t2);
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return 0;
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}
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