//===----------------------------------------------------------------------===// // // 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 // bool_constant #include <type_traits> #include <cassert> #include "test_macros.h" int main() { #if TEST_STD_VER > 14 typedef std::bool_constant<true> _t; static_assert(_t::value, ""); static_assert((std::is_same<_t::value_type, bool>::value), ""); static_assert((std::is_same<_t::type, _t>::value), ""); static_assert((_t() == true), ""); typedef std::bool_constant<false> _f; static_assert(!_f::value, ""); static_assert((std::is_same<_f::value_type, bool>::value), ""); static_assert((std::is_same<_f::type, _f>::value), ""); static_assert((_f() == false), ""); #endif }