171771a9f5
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@185865 91177308-0d34-0410-b5e6-96231b3b80d8
48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// type_traits
|
|
|
|
// integral_constant
|
|
|
|
#include <type_traits>
|
|
#include <cassert>
|
|
|
|
int main()
|
|
{
|
|
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), "");
|
|
#ifndef _LIBCPP_HAS_NO_CONSTEXPR
|
|
static_assert((_5() == 5), "");
|
|
#else
|
|
assert(_5() == 5);
|
|
#endif
|
|
|
|
#if _LIBCPP_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;
|
|
|
|
std::true_type t1;
|
|
std::true_type t2 = t1;
|
|
}
|