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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11
// <propagate_const>
// template <class T> constexpr bool operator!=(const propagate_const<T>& x, const propagate_const<T>& y);
// template <class T> constexpr bool operator!=(const T& x, const propagate_const<T>& y);
// template <class T> constexpr bool operator!=(const propagate_const<T>& x, const T& y);
#include <experimental/propagate_const>
#include "propagate_const_helpers.h"
#include <cassert>
using std::experimental::propagate_const;
using std::nullptr_t;
constexpr bool operator!=(const X &lhs, const X &rhs) {
return lhs.i_ != rhs.i_;
}
constexpr bool operator!=(const X &, const nullptr_t &) {
return true;
}
constexpr bool operator!=(const nullptr_t &, const X &) {
return true;
}
int main() {
constexpr X x1_1(1);
constexpr X x2_1(1);
constexpr X x3_2(2);
static_assert(!(x1_1 != x2_1), "");
static_assert(x1_1 != x3_2, "");
typedef propagate_const<X> P;
constexpr P p1_1(1);
constexpr P p2_1(1);
constexpr P p3_2(2);
static_assert(!(p1_1 != p2_1), "");
static_assert(p1_1 != p3_2, "");
static_assert(!(x1_1 != p1_1), "");
static_assert(x1_1 != p3_2, "");
static_assert(!(p1_1 != x1_1), "");
static_assert(p1_1 != x3_2, "");
static_assert(p1_1!=nullptr,"");
static_assert(nullptr!=p1_1,"");
}
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