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// UNSUPPORTED: c++03, c++11
10
11// <propagate_const>
12
13// template <class T> constexpr bool operator!=(const propagate_const<T>& x, const propagate_const<T>& y);
14// template <class T> constexpr bool operator!=(const T& x, const propagate_const<T>& y);
15// template <class T> constexpr bool operator!=(const propagate_const<T>& x, const T& y);
16
17#include <experimental/propagate_const>
18#include "test_macros.h"
19#include "propagate_const_helpers.h"
20#include <cassert>
21
22using std::experimental::propagate_const;
23using std::nullptr_t;
24
25constexpr bool operator!=(const X &lhs, const X &rhs) {
26 return lhs.i_ != rhs.i_;
27}
28
29constexpr bool operator!=(const X &, const nullptr_t &) {
30 return true;
31}
32
33constexpr bool operator!=(const nullptr_t &, const X &) {
34 return true;
35}
36
37int main(int, char**) {
38 constexpr X x1_1(1);
39 constexpr X x2_1(1);
40 constexpr X x3_2(2);
41
42 static_assert(!(x1_1 != x2_1), "");
43 static_assert(x1_1 != x3_2, "");
44
45 typedef propagate_const<X> P;
46
47 constexpr P p1_1(1);
48 constexpr P p2_1(1);
49 constexpr P p3_2(2);
50
51 static_assert(!(p1_1 != p2_1), "");
52 static_assert(p1_1 != p3_2, "");
53
54 static_assert(!(x1_1 != p1_1), "");
55 static_assert(x1_1 != p3_2, "");
56
57 static_assert(!(p1_1 != x1_1), "");
58 static_assert(p1_1 != x3_2, "");
59
60 static_assert(p1_1!=nullptr,"");
61 static_assert(nullptr!=p1_1,"");
62
63 return 0;
64}
65

source code of libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.relops/not_equal.pass.cpp