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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>
// template <class Duration>
// class hh_mm_ss
// {
// public:
// static unsigned constexpr fractional_width = see below;
// using precision = see below;
//
// fractional_width is the number of fractional decimal digits represented by precision.
// fractional_width has the value of the smallest possible integer in the range [0, 18]
// such that precision will exactly represent all values of Duration.
// If no such value of fractional_width exists, then fractional_width is 6.
#include <chrono>
#include <cassert>
#include "test_macros.h"
template <typename Duration, unsigned width>
constexpr bool check_width()
{
using HMS = std::chrono::hh_mm_ss<Duration>;
return HMS::fractional_width == width;
}
int main(int, char**)
{
using microfortnights = std::chrono::duration<int, std::ratio<756, 625>>;
static_assert( check_width<std::chrono::hours, 0>(), "");
static_assert( check_width<std::chrono::minutes, 0>(), "");
static_assert( check_width<std::chrono::seconds, 0>(), "");
static_assert( check_width<std::chrono::milliseconds, 3>(), "");
static_assert( check_width<std::chrono::microseconds, 6>(), "");
static_assert( check_width<std::chrono::nanoseconds, 9>(), "");
static_assert( check_width<std::chrono::duration<int, std::ratio< 1, 2>>, 1>(), "");
static_assert( check_width<std::chrono::duration<int, std::ratio< 1, 3>>, 6>(), "");
static_assert( check_width<std::chrono::duration<int, std::ratio< 1, 4>>, 2>(), "");
static_assert( check_width<std::chrono::duration<int, std::ratio< 1, 5>>, 1>(), "");
static_assert( check_width<std::chrono::duration<int, std::ratio< 1, 6>>, 6>(), "");
static_assert( check_width<std::chrono::duration<int, std::ratio< 1, 7>>, 6>(), "");
static_assert( check_width<std::chrono::duration<int, std::ratio< 1, 8>>, 3>(), "");
static_assert( check_width<std::chrono::duration<int, std::ratio< 1, 9>>, 6>(), "");
static_assert( check_width<std::chrono::duration<int, std::ratio< 1, 10>>, 1>(), "");
static_assert( check_width<microfortnights, 4>(), "");
return 0;
}
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