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90 lines
3.6 KiB
C++
90 lines
3.6 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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// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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// !!! Before you commit any changes to this file please make sure to check if it !!!
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// !!! renders correctly in the documentation "Examples" section. !!!
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// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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#include "measurement.h"
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#include <mp-units/bits/hacks.h>
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#include <mp-units/compat_macros.h>
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#ifdef MP_UNITS_IMPORT_STD
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import std;
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#else
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#include <iostream>
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#endif
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#ifdef MP_UNITS_MODULES
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import mp_units;
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#else
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#include <mp-units/framework.h>
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#include <mp-units/math.h>
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#include <mp-units/systems/isq/space_and_time.h>
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#include <mp-units/systems/si.h>
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#endif
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namespace {
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static_assert(mp_units::RepresentationOf<measurement<double>, mp_units::quantity_character::real_scalar>);
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static_assert(mp_units::RepresentationOf<measurement<double>, mp_units::quantity_character::vector>);
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void example()
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{
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using namespace mp_units;
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using namespace mp_units::si::unit_symbols;
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std::cout << "Mass of the Sun: M_sun = " << measurement{19884, 2} * (mag_power<10, 26> * kg) << '\n';
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const auto acceleration = isq::acceleration(measurement{9.8, 0.1} * m / s2);
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const auto time = measurement{1.2, 0.1} * s;
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const QuantityOf<isq::velocity> auto velocity = acceleration * time;
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std::cout << "Velocity calculation: V = " << acceleration << " * " << time << " = " << velocity << " = "
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<< velocity.in(km / h) << '\n';
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const auto length = measurement{123., 1.} * m;
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std::cout << "Scalar multiplication: d = 10 * " << length << " = " << 10 * length << '\n';
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const auto radius = measurement{5.0, 0.1} * m;
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const auto circumference = radius * (mag<2> * mag<π> * one);
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const auto area = pow<2>(radius) * (mag<π> * one);
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std::cout << "Radius: r = " << radius << '\n';
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std::cout << "Circular circumference: 2πr = " << circumference << " = " << circumference.in(m) << '\n';
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std::cout << "Circular area: πr² = " << area << " = " << area.in(m2) << '\n';
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const auto area_measured = measurement{25.0, 1.0} * (mag<π> * m2);
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const auto radius_from_area = sqrt(area_measured / (mag<π> * one));
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std::cout << "Radius from area: A = " << area_measured << " -> r = √(A/π) = " << radius_from_area << '\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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} catch (const std::exception& ex) {
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std::cerr << "Unhandled std exception caught: " << ex.what() << '\n';
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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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