src/third_party/libc++/trunk/test/utilities/function.objects/bitwise.operations/transparent.pass.cpp

   1 #include <functional>
   2 #include <string>
   3
   4 template <class _Tp>
   5 struct is_transparent
   6 {
   7 private:
   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);
  11 public:
  12     static const bool value = sizeof(__test<_Tp>(0)) == 1;
  13 };
  14
  15
  16 int 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     }