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// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
10
11// <functional>
12
13// logical_not
14
15#include <functional>
16#include <type_traits>
17#include <cassert>
18
19#include "test_macros.h"
20
21int main(int, char**)
22{
23 typedef std::logical_not<int> F;
24 const F f = F();
25#if TEST_STD_VER <= 17
26 static_assert((std::is_same<F::argument_type, int>::value), "" );
27 static_assert((std::is_same<F::result_type, bool>::value), "" );
28#endif
29 assert(!f(36));
30 assert(f(0));
31#if TEST_STD_VER > 11
32 typedef std::logical_not<> F2;
33 const F2 f2 = F2();
34 assert(!f2(36));
35 assert( f2(0));
36 assert(!f2(36L));
37 assert( f2(0L));
38
39 constexpr bool foo = std::logical_not<int> () (36);
40 static_assert ( !foo, "" );
41
42 constexpr bool bar = std::logical_not<> () (36);
43 static_assert ( !bar, "" );
44#endif
45
46 return 0;
47}
48

source code of libcxx/test/std/utilities/function.objects/logical.operations/logical_not.pass.cpp