forked from mpusz/mp-units
58 lines
2.5 KiB
C++
58 lines
2.5 KiB
C++
// The MIT License (MIT)
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//
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// Copyright (c) 2018 Mateusz Pusz
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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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#include <mp_units/format.h>
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#include <mp_units/iostream.h>
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#include <mp_units/systems/international/international.h>
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#include <mp_units/systems/isq/space_and_time.h>
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#include <mp_units/systems/si/unit_symbols.h>
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#include <iostream>
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using namespace mp_units;
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constexpr QuantityOf<isq::speed> auto avg_speed(QuantityOf<isq::distance> auto d, QuantityOf<isq::duration> auto t)
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{
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return quantity_cast<isq::speed>(d / t);
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}
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int main()
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{
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using namespace mp_units::si::unit_symbols;
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using namespace mp_units::international::unit_symbols;
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constexpr auto v1 = 110 * (km / h);
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constexpr auto v2 = 70. * mph;
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constexpr auto v3 = avg_speed(220 * km, 2 * h);
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constexpr auto v4 = avg_speed(140 * mi, 2 * h);
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constexpr auto v5 = value_cast<m / s>(v3);
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constexpr auto v6 = value_cast<m / s>(v4);
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constexpr auto v7 = value_cast<int>(v6);
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std::cout << v1 << '\n'; // 110 km/h
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std::cout << v2 << '\n'; // 70 mi/h
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std::cout << STD_FMT::format("{}", v3) << '\n'; // 110 km/h
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std::cout << STD_FMT::format("{:*^14}", v4) << '\n'; // ***70 mi/h****
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std::cout << STD_FMT::format("{:%Q in %q}", v5) << '\n'; // 30.5556 in m/s
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std::cout << STD_FMT::format("{0:%Q} in {0:%q}", v6) << '\n'; // 31.2928 in m/s
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std::cout << STD_FMT::format("{:%Q}", v7) << '\n'; // 31
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}
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