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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++03, c++11, c++14, c++17
// <chrono>
// class month_day_last;
// constexpr month_day_last
// operator/(const month& m, last_spec) noexcept;
// Returns: month_day_last{m}.
//
// constexpr month_day_last
// operator/(int m, last_spec) noexcept;
// Returns: month(m) / last.
//
// constexpr month_day_last
// operator/(last_spec, const month& m) noexcept;
// Returns: m / last.
//
// constexpr month_day_last
// operator/(last_spec, int m) noexcept;
// Returns: month(m) / last.
//
//
// [Note: A month_day_last object can be constructed using the expression m/last or last/m,
// where m is an expression of type month. — end note]
// [Example:
// constexpr auto mdl = February/last; // mdl is the last day of February of an as yet unspecified year
// static_assert(mdl.month() == February);
// --end example]
#include <chrono>
#include <type_traits>
#include <cassert>
#include "test_macros.h"
int main(int, char**)
{
using month = std::chrono::month;
using month_day_last = std::chrono::month_day_last;
constexpr month February = std::chrono::February;
constexpr std::chrono::last_spec last = std::chrono::last;
ASSERT_SAME_TYPE(month_day_last, decltype(last/February));
ASSERT_SAME_TYPE(month_day_last, decltype(February/last));
// Run the example
{
constexpr auto mdl = February/std::chrono::last;
static_assert(mdl.month() == February, "");
}
{ // operator/(const month& m, last_spec) and switched
ASSERT_NOEXCEPT ( last/February);
ASSERT_SAME_TYPE(month_day_last, decltype(last/February));
ASSERT_NOEXCEPT ( February/last);
ASSERT_SAME_TYPE(month_day_last, decltype(February/last));
static_assert((last/February).month() == February, "");
static_assert((February/last).month() == February, "");
for (unsigned i = 1; i < 12; ++i)
{
month m{i};
month_day_last mdl1 = last/m;
month_day_last mdl2 = m/last;
assert(mdl1.month() == m);
assert(mdl2.month() == m);
assert(mdl1 == mdl2);
}
}
{ // operator/(int, last_spec) and switched
ASSERT_NOEXCEPT ( last/2);
ASSERT_SAME_TYPE(month_day_last, decltype(last/2));
ASSERT_NOEXCEPT ( 2/last);
ASSERT_SAME_TYPE(month_day_last, decltype(2/last));
static_assert((last/2).month() == February, "");
static_assert((2/last).month() == February, "");
for (unsigned i = 1; i < 12; ++i)
{
month m{i};
month_day_last mdl1 = last/i;
month_day_last mdl2 = i/last;
assert(mdl1.month() == m);
assert(mdl2.month() == m);
assert(mdl1 == mdl2);
}
}
return 0;
}
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