integral_constant.pass.cpp
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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// type_traits
// integral_constant
#include <type_traits>
#include <cassert>
#include "test_macros.h"
int main(int, char**)
{
typedef std::integral_constant<int, 5> _5;
static_assert(_5::value == 5, "");
static_assert((std::is_same<_5::value_type, int>::value), "");
static_assert((std::is_same<_5::type, _5>::value), "");
#if TEST_STD_VER >= 11
static_assert((_5() == 5), "");
#endif
assert(_5() == 5);
#if TEST_STD_VER > 11
static_assert ( _5{}() == 5, "" );
static_assert ( std::true_type{}(), "" );
#endif
static_assert(std::false_type::value == false, "");
static_assert((std::is_same<std::false_type::value_type, bool>::value), "");
static_assert((std::is_same<std::false_type::type, std::false_type>::value), "");
static_assert(std::true_type::value == true, "");
static_assert((std::is_same<std::true_type::value_type, bool>::value), "");
static_assert((std::is_same<std::true_type::type, std::true_type>::value), "");
std::false_type f1;
std::false_type f2 = f1;
assert(!f2);
std::true_type t1;
std::true_type t2 = t1;
assert(t2);
return 0;
}