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_base_of<std::unary_function<int, int>, F>::value), "");
24     assert((f(0xEA95) & 0xFFFF ) == 0x156A);
25     assert((f(0x58D3) & 0xFFFF ) == 0xA72C);
26     assert((f(0)      & 0xFFFF ) == 0xFFFF);
27     assert((f(0xFFFF) & 0xFFFF ) == 0);
28 
29     typedef std::bit_not<> F2;
30     const F2 f2 = F2();
31     assert((f2(0xEA95)  & 0xFFFF ) == 0x156A);
32     assert((f2(0xEA95L) & 0xFFFF ) == 0x156A);
33     assert((f2(0x58D3)  & 0xFFFF ) == 0xA72C);
34     assert((f2(0x58D3L) & 0xFFFF ) == 0xA72C);
35     assert((f2(0)       & 0xFFFF ) == 0xFFFF);
36     assert((f2(0L)      & 0xFFFF ) == 0xFFFF);
37     assert((f2(0xFFFF)  & 0xFFFF ) == 0);
38     assert((f2(0xFFFFL)  & 0xFFFF ) == 0);
39 
40     constexpr int foo = std::bit_not<int> () (0xEA95) & 0xFFFF;
41     static_assert ( foo == 0x156A, "" );
42 
43     constexpr int bar = std::bit_not<> () (0xEA95) & 0xFFFF;
44     static_assert ( bar == 0x156A, "" );
45 #endif
46 }
47