text: /*
  * Copyright 2021 Robert Schütze
  *
  * ### MIT license
  *
  * 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.
  *
  * (Created by Robert Schütze on 25.05.2021.)
  */
  
  #ifndef __VERLET_H
  #define __VERLET_H
  
  #include "../HeaderFiles/types.h"
  #include "../HeaderFiles/atoms.h"
  
  void verlet_step1_simple(Positions_t &positions, Velocities_t &velocities,
                    const Forces_t &forces, double timestep);
  void verlet_step2_simple(Velocities_t &velocities, const Forces_t &forces, double timestep);
  
  void verlet_step1(Atoms &atoms, double timestep);
  void verlet_step2(Atoms &atoms, double timestep);
  
  #endif  // __VERLET_H