transparent.pass.cpp revision 7a4e3742800a581026478304aade40566031d38d 
1#include <functional>
2#include <string>
3
4template <class _Tp>
5struct is_transparent
6{
7private:
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);
11public:
12    static const bool value = sizeof(__test<_Tp>(0)) == 1;
13};
14
15
16int main () {
17#if _LIBCPP_STD_VER > 11
18
19    static_assert ( !is_transparent<std::bit_and<int>>::value, "" );
20    static_assert ( !is_transparent<std::bit_and<std::string>>::value, "" );
21    static_assert (  is_transparent<std::bit_and<void>>::value, "" );
22    static_assert (  is_transparent<std::bit_and<>>::value, "" );
23
24    static_assert ( !is_transparent<std::bit_or<int>>::value, "" );
25    static_assert ( !is_transparent<std::bit_or<std::string>>::value, "" );
26    static_assert (  is_transparent<std::bit_or<void>>::value, "" );
27    static_assert (  is_transparent<std::bit_or<>>::value, "" );
28
29    static_assert ( !is_transparent<std::bit_xor<int>>::value, "" );
30    static_assert ( !is_transparent<std::bit_xor<std::string>>::value, "" );
31    static_assert (  is_transparent<std::bit_xor<void>>::value, "" );
32    static_assert (  is_transparent<std::bit_xor<>>::value, "" );
33
34    static_assert ( !is_transparent<std::bit_not<int>>::value, "" );
35    static_assert ( !is_transparent<std::bit_not<std::string>>::value, "" );
36    static_assert (  is_transparent<std::bit_not<void>>::value, "" );
37    static_assert (  is_transparent<std::bit_not<>>::value, "" );
38
39#endif
40
41    return 0;
42    }
43