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- /*
- * Copyright (C) 2021 Christopher J. Howard
- *
- * This file is part of Antkeeper source code.
- *
- * Antkeeper source code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Antkeeper source code is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
- */
-
- #ifndef ANTKEEPER_PHYSICS_ATMOSPHERE_HPP
- #define ANTKEEPER_PHYSICS_ATMOSPHERE_HPP
-
- #include "physics/constants.hpp"
- #include <cmath>
-
- namespace physics {
-
- /// Atmosphere-related functions.
- namespace atmosphere {
-
- /**
- * Calculates the density of exponentially-distributed atmospheric particles at a given altitude.
- *
- * @param d0 Density at sea level.
- * @param z Height above sea level.
- * @param sh Scale height of the particle type.
- * @return Particle density at altitude.
- *
- * @see https://en.wikipedia.org/wiki/Scale_height
- */
- T density(T d0, T z, T sh)
- {
- return d0 * std::exp(-z / sh);
- }
-
- } // namespace atmosphere
-
- } // namespace physics
-
- #endif // ANTKEEPER_PHYSICS_ATMOSPHERE_HPP
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