1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // type_traits
11
12 // bool_constant
13
14 #include <type_traits>
15 #include <cassert>
16
main()17 int main()
18 {
19 #if __cplusplus > 201402L
20 typedef std::bool_constant<true> _t;
21 static_assert(_t::value, "");
22 static_assert((std::is_same<_t::value_type, bool>::value), "");
23 static_assert((std::is_same<_t::type, _t>::value), "");
24 static_assert((_t() == true), "");
25
26 typedef std::bool_constant<false> _f;
27 static_assert(!_f::value, "");
28 static_assert((std::is_same<_f::value_type, bool>::value), "");
29 static_assert((std::is_same<_f::type, _f>::value), "");
30 static_assert((_f() == false), "");
31 #endif
32 }
33