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 // logical_not
13 
14 #include <functional>
15 #include <type_traits>
16 #include <cassert>
17 
main()18 int main()
19 {
20     typedef std::logical_not<int> F;
21     const F f = F();
22     static_assert((std::is_same<F::argument_type, int>::value), "" );
23     static_assert((std::is_same<F::result_type, bool>::value), "" );
24     assert(!f(36));
25     assert(f(0));
26 #if _LIBCPP_STD_VER > 11
27     typedef std::logical_not<> F2;
28     const F2 f2 = F2();
29     assert(!f2(36));
30     assert( f2(0));
31     assert(!f2(36L));
32     assert( f2(0L));
33 
34     constexpr bool foo = std::logical_not<int> () (36);
35     static_assert ( !foo, "" );
36 
37     constexpr bool bar = std::logical_not<> () (36);
38     static_assert ( !bar, "" );
39 #endif
40 }
41