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https://github.com/HowardHinnant/date.git
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018a50bcd0
The NVCC compiler fails to compile the date library due
to a compiler bug which causes it to emit an error when
directly using std::ratio_{multiply,divide} in the template
instantiations for std::duration. This PR works around the
issue by introducing custom ratio_{multiply,divide} which
delegate to the standard library templates
112 lines
4.5 KiB
C++
112 lines
4.5 KiB
C++
// The MIT License (MIT)
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//
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// Copyright (c) 2015, 2016 Howard Hinnant
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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// enum {am = 1, pm};
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// template <class Rep, class Period>
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// class time_of_day<std::chrono::duration<Rep, Period>>
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// {
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// public:
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// using precision = std::chrono::std::chrono::duration<Rep, Period>;
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//
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// constexpr explicit time_of_day(precision since_midnight) noexcept;
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// constexpr time_of_day(std::chrono::hours h, std::chrono::minutes m,
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// std::chrono::seconds s, precision sub_s,
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// unsigned md) noexcept;
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//
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// constexpr std::chrono::hours hours() const noexcept;
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// constexpr std::chrono::minutes minutes() const noexcept;
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// constexpr std::chrono::seconds seconds() const noexcept;
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// constexpr precision subseconds() const noexcept;
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// constexpr unsigned mode() const noexcept;
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//
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// constexpr explicit operator precision() const noexcept;
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// constexpr precision to_duration() const noexcept;
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//
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// void make24() noexcept;
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// void make12() noexcept;
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// };
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// template <class Rep, class Period>
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// std::ostream&
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// operator<<(std::ostream& os, const time_of_day<std::chrono::duration<Rep, Period>>& t);
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#include "date.h"
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#include <cassert>
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#include <sstream>
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#include <type_traits>
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using fortnights = std::chrono::duration<date::weeks::rep,
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date::detail::ratio_multiply<std::ratio<2>,
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date::weeks::period>>;
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using microfortnights = std::chrono::duration<std::int64_t,
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date::detail::ratio_multiply<fortnights::period,
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std::micro>>;
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int
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main()
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{
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using namespace date;
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using namespace std;
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using namespace std::chrono;
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using tod = time_of_day<typename common_type<hours, minutes, microfortnights>::type>;
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static_assert(is_same<tod::precision::period, ratio<1, 10000>>{}, "");
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static_assert( is_trivially_destructible<tod>{}, "");
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static_assert( is_default_constructible<tod>{}, "");
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static_assert( is_trivially_copy_constructible<tod>{}, "");
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static_assert( is_trivially_copy_assignable<tod>{}, "");
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static_assert( is_trivially_move_constructible<tod>{}, "");
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static_assert( is_trivially_move_assignable<tod>{}, "");
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static_assert(is_constructible<tod, microfortnights>{}, "");
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static_assert(!is_convertible<microfortnights, tod>{}, "");
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static_assert(is_nothrow_constructible<tod::precision, tod>{}, "");
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static_assert(!is_convertible<tod, tod::precision>{}, "");
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constexpr tod t1 = tod{hours{13} + minutes{7} + microfortnights{5}};
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static_assert(t1.hours() == hours{13}, "");
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static_assert(t1.minutes() == minutes{7}, "");
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static_assert(t1.seconds() == seconds{6}, "");
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static_assert(t1.subseconds() == tod::precision{480}, "");
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#if __cplusplus >= 201402
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static_assert(static_cast<tod::precision>(t1) == hours{13} + minutes{7}
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+ microfortnights{5}, "");
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static_assert(t1.to_duration() == hours{13} + minutes{7} + microfortnights{5}, "");
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#endif
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auto t2 = t1;
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assert(t2.hours() == t1.hours());
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assert(t2.minutes() == t1.minutes());
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assert(t2.seconds() == t1.seconds());
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assert(t2.subseconds() == t1.subseconds());
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assert(t2.to_duration() == t1.to_duration());
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ostringstream os;
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os << t2;
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assert(os.str() == "13:07:06.0480");
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}
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