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 // equal_to
13
14 #include <functional>
15 #include <type_traits>
16 #include <cassert>
17
main()18 int main()
19 {
20 typedef std::equal_to<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, 6));
25 #if _LIBCPP_STD_VER > 11
26 typedef std::equal_to<> F2;
27 const F2 f2 = F2();
28 assert(f2(36, 36));
29 assert(!f2(36, 6));
30 assert(f2(36, 36.0));
31 assert(f2(36.0, 36L));
32
33 constexpr bool foo = std::equal_to<int> () (36, 36);
34 static_assert ( foo, "" );
35
36 constexpr bool bar = std::equal_to<> () (36.0, 36);
37 static_assert ( bar, "" );
38 #endif
39 }
40