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// UNSUPPORTED: c++03, c++11, c++14, c++17
9
10// <chrono>
11// class year;
12
13// constexpr year operator+() const noexcept;
14// constexpr year operator-() const noexcept;
15
16#include <chrono>
17#include <cassert>
18#include <type_traits>
19#include <utility>
20
21#include "test_macros.h"
22
23using year = std::chrono::year;
24
25constexpr bool test() {
26 for (int i = 10000; i <= 10020; ++i) {
27 year yr(i);
28 assert(static_cast<int>(+yr) == i);
29 assert(static_cast<int>(-yr) == -i);
30 }
31
32 return true;
33}
34
35int main(int, char**) {
36 ASSERT_NOEXCEPT(+std::declval<year>());
37 ASSERT_NOEXCEPT(-std::declval<year>());
38
39 ASSERT_SAME_TYPE(year, decltype(+std::declval<year>()));
40 ASSERT_SAME_TYPE(year, decltype(-std::declval<year>()));
41
42 test();
43 static_assert(test());
44
45 return 0;
46}
47

source code of libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/plus_minus.pass.cpp