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Natural Units support added

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Mateusz Pusz
2020-02-24 19:15:46 +01:00
parent e7756bf4eb
commit c73ba84ad3
3 changed files with 138 additions and 0 deletions
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31
src/include/units/physical/natural/constants.h Normal file
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// The MIT License (MIT)
//
// Copyright (c) 2018 Mateusz Pusz
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
#pragma once
#include <units/physical/natural/dimensions.h>
namespace units::natural {
inline constexpr auto speed_of_light = velocity<unitless>(1);
} // namespace units::natural

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src/include/units/physical/natural/dimensions.h Normal file
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// The MIT License (MIT)
//
// Copyright (c) 2018 Mateusz Pusz
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
#pragma once
#include <units/physical/dimensions.h>
#include <units/physical/natural/units.h>
#include <units/quantity.h>
namespace units::natural {
struct dim_length : physical::dim_length<inverted_gigaelectronvolt> {};
template<Unit U, Scalar Rep = double>
using length = quantity<dim_length, U, Rep>;
struct dim_time : physical::dim_time<inverted_gigaelectronvolt> {};
template<Unit U, Scalar Rep = double>
using time = quantity<dim_time, U, Rep>;
struct dim_mass : physical::dim_mass<gigaelectronvolt> {};
template<Unit U, Scalar Rep = double>
using mass = quantity<dim_mass, U, Rep>;
struct dim_velocity : physical::dim_velocity<dim_velocity, unitless, dim_length, dim_time> {};
template<Unit U, Scalar Rep = double>
using velocity = quantity<dim_velocity, U, Rep>;
struct dim_acceleration : physical::dim_acceleration<dim_acceleration, gigaelectronvolt, dim_length, dim_time> {};
template<Unit U, Scalar Rep = double>
using acceleration = quantity<dim_acceleration, U, Rep>;
struct dim_force : physical::dim_force<dim_force, square_gigaelectronvolt, dim_mass, dim_acceleration> {};
template<Unit U, Scalar Rep = double>
using force = quantity<dim_force, U, Rep>;
struct dim_momentum : physical::dim_momentum<dim_momentum, gigaelectronvolt, dim_mass, dim_velocity> {};
template<Unit U, Scalar Rep = double>
using momentum = quantity<dim_momentum, U, Rep>;
struct dim_energy : physical::dim_energy<dim_energy, gigaelectronvolt, dim_force, dim_length> {};
template<Unit U, Scalar Rep = double>
using energy = quantity<dim_force, U, Rep>;
// Typical UDLs will not work here as the same units are reused by many quantities.
// Should we define some strange ones (i.e. q_mass_GeV)?
} // namespace units::natural

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src/include/units/physical/natural/units.h Normal file
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// The MIT License (MIT)
//
// Copyright (c) 2018 Mateusz Pusz
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
#pragma once
#include <units/unit.h>
#include <units/physical/si/prefixes.h>
namespace units::natural {
struct unitless : named_unit<unitless, "", no_prefix> {};
struct electronvolt : named_unit<electronvolt, "eV", si::prefix> {};
struct gigaelectronvolt : prefixed_unit<gigaelectronvolt, si::giga, electronvolt> {};
struct inverted_gigaelectronvolt : named_unit<inverted_gigaelectronvolt, "GeV⁻¹", no_prefix> {};
struct square_gigaelectronvolt : named_unit<square_gigaelectronvolt, "GeV²", no_prefix> {};
// NOTE: eV as a base unit with no relation to joule prevents us from going back
// from natural units to SI. Do we need such a support or should we treat
// natural units as an isolated island with ev = 1 which simplifies all
// the maths a lot?
} // namespace units::natural