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 // UNSUPPORTED: c++98, c++03, c++11
11 #include <functional>
12 #include <string>
13
14 template <class _Tp>
15 struct is_transparent
16 {
17 private:
18 struct __two {char __lx; char __lxx;};
19 template <class _Up> static __two __test(...);
20 template <class _Up> static char __test(typename _Up::is_transparent* = 0);
21 public:
22 static const bool value = sizeof(__test<_Tp>(0)) == 1;
23 };
24
25
main()26 int main () {
27 static_assert ( !is_transparent<std::bit_and<int>>::value, "" );
28 static_assert ( !is_transparent<std::bit_and<std::string>>::value, "" );
29 static_assert ( is_transparent<std::bit_and<void>>::value, "" );
30 static_assert ( is_transparent<std::bit_and<>>::value, "" );
31
32 static_assert ( !is_transparent<std::bit_or<int>>::value, "" );
33 static_assert ( !is_transparent<std::bit_or<std::string>>::value, "" );
34 static_assert ( is_transparent<std::bit_or<void>>::value, "" );
35 static_assert ( is_transparent<std::bit_or<>>::value, "" );
36
37 static_assert ( !is_transparent<std::bit_xor<int>>::value, "" );
38 static_assert ( !is_transparent<std::bit_xor<std::string>>::value, "" );
39 static_assert ( is_transparent<std::bit_xor<void>>::value, "" );
40 static_assert ( is_transparent<std::bit_xor<>>::value, "" );
41
42 static_assert ( !is_transparent<std::bit_not<int>>::value, "" );
43 static_assert ( !is_transparent<std::bit_not<std::string>>::value, "" );
44 static_assert ( is_transparent<std::bit_not<void>>::value, "" );
45 static_assert ( is_transparent<std::bit_not<>>::value, "" );
46
47 return 0;
48 }
49