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_and
13 
14 #include <functional>
15 #include <type_traits>
16 #include <cassert>
17 
18 int main()
19 {
20     typedef std::logical_and<int> F;
21     const F f = F();
22     static_assert((std::is_base_of<std::binary_function<int, int, bool>, F>::value), "");
23     assert(f(36, 36));
24     assert(!f(36, 0));
25     assert(!f(0, 36));
26     assert(!f(0, 0));
27 #if _LIBCPP_STD_VER > 11
28     typedef std::logical_and<> F2;
29     const F2 f2 = F2();
30     assert( f2(36, 36));
31     assert( f2(36, 36L));
32     assert( f2(36L, 36));
33     assert(!f2(36, 0));
34     assert(!f2(0, 36));
35     assert( f2(36, 36L));
36     assert(!f2(36, 0L));
37     assert(!f2(0, 36L));
38     assert( f2(36L, 36));
39     assert(!f2(36L, 0));
40     assert(!f2(0L, 36));
41 
42     constexpr bool foo = std::logical_and<int> () (36, 36);
43     static_assert ( foo, "" );
44 
45     constexpr bool bar = std::logical_and<> () (36.0, 36);
46     static_assert ( bar, "" );
47 #endif
48 }
49