1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // type_traits
10 
11 // bool_constant
12 
13 #include <type_traits>
14 #include <cassert>
15 
16 #include "test_macros.h"
17 
18 int main(int, char**)
19 {
20 #if TEST_STD_VER > 14
21     typedef std::bool_constant<true> _t;
22     static_assert(_t::value, "");
23     static_assert((std::is_same<_t::value_type, bool>::value), "");
24     static_assert((std::is_same<_t::type, _t>::value), "");
25     static_assert((_t() == true), "");
26 
27     typedef std::bool_constant<false> _f;
28     static_assert(!_f::value, "");
29     static_assert((std::is_same<_f::value_type, bool>::value), "");
30     static_assert((std::is_same<_f::type, _f>::value), "");
31     static_assert((_f() == false), "");
32 #endif
33 
34   return 0;
35 }
36