forked from mpusz/mp-units
f31b26b5e5
- unknown_unit added - examples refactored - base_type renamed to downcast_base_type - scaled_unit renamed to named_scaled_unit - detail::reference_unit renamed to scaled_unit - quantity_test cleanup
68 lines
2.2 KiB
C++
68 lines
2.2 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 <units/physical/si/velocity.h>
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#include <iostream>
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namespace {
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template<units::Length D, units::Time T>
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constexpr units::Velocity AUTO avg_speed(D d, T t)
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{
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return d / t;
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}
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void example()
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{
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using namespace units::si::literals;
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units::Length AUTO d1 = 123m;
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units::Time AUTO t1 = 10s;
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units::Velocity AUTO v1 = avg_speed(d1, t1);
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auto temp1 = v1 * 50m; // produces intermediate unknown dimension with 'unknown_unit' as its 'coherent_unit'
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units::Velocity AUTO v2 = temp1 / 100m; // back to known dimensions again
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units::Length AUTO d2 = v2 * 60s;
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std::cout << "d1 = " << d1 << '\n';
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std::cout << "t1 = " << t1 << '\n';
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std::cout << "v1 = " << v1 << '\n';
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std::cout << "temp1 = " << temp1 << '\n';
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std::cout << "v2 = " << v2 << '\n';
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std::cout << "d2 = " << d2 << '\n';
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}
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} // namespace
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int main()
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{
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try {
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example();
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}
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catch (const std::exception& ex) {
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std::cerr << "Unhandled std exception caught: " << ex.what() << '\n';
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}
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catch (...) {
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std::cerr << "Unhandled unknown exception caught\n";
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}
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}
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