mirror of
https://github.com/HowardHinnant/date.git
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64 lines
2.5 KiB
C++
64 lines
2.5 KiB
C++
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// The MIT License (MIT)
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//
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// Copyright (c) 2017 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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// template <unsigned w>
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// struct make_precision
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// {
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// using type = std::chrono::duration<std::int64_t,
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// std::ratio<1, static_pow10<w>::value>>;
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// static constexpr unsigned width = w;
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// };
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#include "date.h"
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#include <cstdint>
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#include <type_traits>
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int
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main()
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{
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using namespace date::detail;
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using namespace std;
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using namespace std::chrono;
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static_assert(make_precision<0>::width == 0, "");
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static_assert(is_same<make_precision<0>::type, duration<int64_t, ratio<1, 1>>>{}, "");
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static_assert(make_precision<1>::width == 1, "");
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static_assert(is_same<make_precision<1>::type, duration<int64_t, ratio<1, 10>>>{}, "");
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static_assert(make_precision<2>::width == 2, "");
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static_assert(is_same<make_precision<2>::type, duration<int64_t, ratio<1, 100>>>{}, "");
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static_assert(make_precision<3>::width == 3, "");
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static_assert(is_same<make_precision<3>::type, duration<int64_t, ratio<1, 1000>>>{}, "");
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static_assert(make_precision<18>::width == 18, "");
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static_assert(is_same<make_precision<18>::type, duration<int64_t, ratio<1, 1000000000000000000>>>{}, "");
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static_assert(make_precision<19>::width == 6, "");
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static_assert(is_same<make_precision<19>::type, microseconds>{}, "");
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static_assert(make_precision<20>::width == 6, "");
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static_assert(is_same<make_precision<20>::type, microseconds>{}, "");
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}
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