PN1 class
          #include <src/interaction/post-newtonian.hpp>
        
        First order Post-Newtonian term for general relativity.
Contents
Public static variables
- static bool vel_dependent constexpr
 - Is this force velocity dependent?
 
Public static functions
- 
              template<typename Particles>static void add_acc_to(Particles const& particles, typename Particles::VectorArray& acceleration)
 - Add acceleration from first order post-newtonian term to existing 3D vector array.
 
Function documentation
              
                template<typename Particles>
              
              static void hub:: force:: PN1:: add_acc_to(Particles const& particles,
              typename Particles::VectorArray& acceleration)
            
            Add acceleration from first order post-newtonian term to existing 3D vector array.
| Template parameters | |
|---|---|
| Particles | Particle system type satisfy concept particle system. | 
| Parameters | |
| particles in | Particle system that is used to evaluated the acceleration. | 
| acceleration in/out | 3D vector array to be updated. |