1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <functional>
10 
11 // unary_negate
12 
13 #include <functional>
14 #include <type_traits>
15 #include <cassert>
16 
17 int main(int, char**)
18 {
19     typedef std::unary_negate<std::logical_not<int> > F;
20     const F f = F(std::logical_not<int>());
21     static_assert((std::is_same<F::argument_type, int>::value), "" );
22     static_assert((std::is_same<F::result_type, bool>::value), "" );
23     assert(f(36));
24     assert(!f(0));
25 
26   return 0;
27 }
28