8 struct __two {char __lx; char __lxx;};
9 template <class _Up> static __two __test(...);
10 template <class _Up> static char __test(typename _Up::is_transparent* = 0);
12 static const bool value = sizeof(__test<_Tp>(0)) == 1;
17 #if _LIBCPP_STD_VER > 11
19 static_assert ( !is_transparent<std::logical_and<int>>::value, "" );
20 static_assert ( !is_transparent<std::logical_and<std::string>>::value, "" );
21 static_assert ( is_transparent<std::logical_and<void>>::value, "" );
22 static_assert ( is_transparent<std::logical_and<>>::value, "" );
24 static_assert ( !is_transparent<std::logical_or<int>>::value, "" );
25 static_assert ( !is_transparent<std::logical_or<std::string>>::value, "" );
26 static_assert ( is_transparent<std::logical_or<void>>::value, "" );
27 static_assert ( is_transparent<std::logical_or<>>::value, "" );
29 static_assert ( !is_transparent<std::logical_not<int>>::value, "" );
30 static_assert ( !is_transparent<std::logical_not<std::string>>::value, "" );
31 static_assert ( is_transparent<std::logical_not<void>>::value, "" );
32 static_assert ( is_transparent<std::logical_not<>>::value, "" );