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 // less_equal
13
14 #include <functional>
15 #include <type_traits>
16 #include <cassert>
17
main()18 int main()
19 {
20 typedef std::less_equal<int> F;
21 const F f = F();
22 static_assert((std::is_same<int, F::first_argument_type>::value), "" );
23 static_assert((std::is_same<int, F::second_argument_type>::value), "" );
24 static_assert((std::is_same<bool, F::result_type>::value), "" );
25 assert(f(36, 36));
26 assert(!f(36, 6));
27 assert(f(6, 36));
28 #if _LIBCPP_STD_VER > 11
29 typedef std::less_equal<> F2;
30 const F2 f2 = F2();
31 assert( f2(36, 36));
32 assert(!f2(36, 6));
33 assert( f2(6, 36));
34 assert(!f2(36, 6.0));
35 assert(!f2(36.0, 6));
36 assert( f2(6, 36.0));
37 assert( f2(6.0, 36));
38
39 constexpr bool foo = std::less_equal<int> () (36, 36);
40 static_assert ( foo, "" );
41
42 constexpr bool bar = std::less_equal<> () (36.0, 36);
43 static_assert ( bar, "" );
44 #endif
45 }
46