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// UNSUPPORTED: c++98, c++03, c++11
11
12// <propagate_const>
13
14// template <class T> constexpr bool operator<=(const propagate_const<T>& x, const propagate_const<T>& y);
15// template <class T> constexpr bool operator<=(const T& x, const propagate_const<T>& y);
16// template <class T> constexpr bool operator<=(const propagate_const<T>& x, const T& y);
17
18#include <experimental/propagate_const>
19#include "propagate_const_helpers.h"
20#include <cassert>
21
22using std::experimental::propagate_const;
23
24constexpr bool operator<=(const X &lhs, const X &rhs) {
25  return lhs.i_ <= rhs.i_;
26}
27
28int main() {
29  constexpr X x1_1(1);
30  constexpr X x2_1(1);
31  constexpr X x3_2(2);
32
33  static_assert(x1_1 <= x2_1, "");
34  static_assert(x1_1 <= x3_2, "");
35  static_assert(!(x3_2 <= x1_1), "");
36
37  typedef propagate_const<X> P;
38
39  constexpr P p1_1(1);
40  constexpr P p2_1(1);
41  constexpr P p3_2(2);
42
43  static_assert(p1_1 <= p2_1, "");
44  static_assert(p1_1 <= p3_2, "");
45  static_assert(!(p3_2 <= p1_1), "");
46
47  static_assert(p1_1 <= x2_1, "");
48  static_assert(p1_1 <= x3_2, "");
49  static_assert(!(p3_2 <= x1_1), "");
50
51  static_assert(x1_1 <= p2_1, "");
52  static_assert(x1_1 <= p3_2, "");
53  static_assert(!(x3_2 <= p1_1), "");
54
55}
56