mirror of
https://github.com/mpusz/mp-units.git
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Mateusz Pusz
95 lines
3.1 KiB
C++
95 lines
3.1 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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// Verifies that an installed linear algebra integration can be consumed - both as a header
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// (`#include <mp-units/integrations/<lib>.h>`) and, in a modules build, as a module
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// (`import mp_units.integrations.<lib>;`). The backend is selected from whatever library the
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// linked target makes available.
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#include <mp-units/compat_macros.h>
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#if __has_include(<Eigen/Core>)
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#include <Eigen/Core>
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#define MP_UNITS_LA_EIGEN
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#elif __has_include(<glm/vec3.hpp>)
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#include <glm/geometric.hpp>
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#include <glm/vec3.hpp>
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#define MP_UNITS_LA_GLM
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#elif __has_include(<blaze/math/StaticVector.h>)
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#include <blaze/math/StaticVector.h>
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#define MP_UNITS_LA_BLAZE
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#else
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#error "No supported linear algebra library found on the include path"
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#endif
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#if MP_UNITS_HOSTED
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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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#endif
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#ifdef MP_UNITS_MODULES
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import mp_units;
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#if defined(MP_UNITS_LA_EIGEN)
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import mp_units.integrations.eigen;
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#elif defined(MP_UNITS_LA_GLM)
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import mp_units.integrations.glm;
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#elif defined(MP_UNITS_LA_BLAZE)
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import mp_units.integrations.blaze;
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#endif
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#else
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#include <mp-units/math.h>
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#include <mp-units/systems/isq.h>
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#include <mp-units/systems/si.h>
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#if defined(MP_UNITS_LA_EIGEN)
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#include <mp-units/integrations/eigen.h>
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#elif defined(MP_UNITS_LA_GLM)
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#include <mp-units/integrations/glm.h>
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#elif defined(MP_UNITS_LA_BLAZE)
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#include <mp-units/integrations/blaze.h>
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#endif
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#endif
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using namespace mp_units;
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#if defined(MP_UNITS_LA_EIGEN)
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using vec3 = Eigen::Vector3d;
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#elif defined(MP_UNITS_LA_GLM)
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using vec3 = glm::dvec3;
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#elif defined(MP_UNITS_LA_BLAZE)
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using vec3 = blaze::StaticVector<double, 3>;
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#endif
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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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const quantity velocity = vec3{3., 4., 0.} * isq::velocity[km / h];
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const quantity speed = magnitude(velocity.numerical_value_in(km / h)) * (km / h);
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#if MP_UNITS_HOSTED
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std::cout << "speed = " << speed.numerical_value_in(km / h) << " km/h\n";
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#else
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[[maybe_unused]] auto value = speed;
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#endif
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}
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