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      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 // <functional>
     11 
     12 // bit_not
     13 
     14 #include <functional>
     15 #include <type_traits>
     16 #include <cassert>
     17 
     18 int main()
     19 {
     20 #if _LIBCPP_STD_VER > 11
     21     typedef std::bit_not<int> F;
     22     const F f = F();
     23     static_assert((std::is_same<F::argument_type, int>::value), "" );
     24     static_assert((std::is_same<F::result_type, int>::value), "" );
     25     assert((f(0xEA95) & 0xFFFF ) == 0x156A);
     26     assert((f(0x58D3) & 0xFFFF ) == 0xA72C);
     27     assert((f(0)      & 0xFFFF ) == 0xFFFF);
     28     assert((f(0xFFFF) & 0xFFFF ) == 0);
     29 
     30     typedef std::bit_not<> F2;
     31     const F2 f2 = F2();
     32     assert((f2(0xEA95)  & 0xFFFF ) == 0x156A);
     33     assert((f2(0xEA95L) & 0xFFFF ) == 0x156A);
     34     assert((f2(0x58D3)  & 0xFFFF ) == 0xA72C);
     35     assert((f2(0x58D3L) & 0xFFFF ) == 0xA72C);
     36     assert((f2(0)       & 0xFFFF ) == 0xFFFF);
     37     assert((f2(0L)      & 0xFFFF ) == 0xFFFF);
     38     assert((f2(0xFFFF)  & 0xFFFF ) == 0);
     39     assert((f2(0xFFFFL)  & 0xFFFF ) == 0);
     40 
     41     constexpr int foo = std::bit_not<int> () (0xEA95) & 0xFFFF;
     42     static_assert ( foo == 0x156A, "" );
     43 
     44     constexpr int bar = std::bit_not<> () (0xEA95) & 0xFFFF;
     45     static_assert ( bar == 0x156A, "" );
     46 #endif
     47 }
     48