# Kspace styles

Classes that compute long-range Coulombic interactions via K-space
representations (Ewald, PPPM) are derived from the KSpace class. New
styles can be created to add new K-space options to LAMMPS.

Ewald.cpp is an example of computing K-space interactions.

Here is a brief description of methods you define in your new derived
class. See kspace.h for details.

  --------------- ------------------------------------------------
  init            initialize the calculation before a run

  setup           computation before the first timestep of a run

  compute         every-timestep computation

  memory_usage    tally of memory usage
  --------------- ------------------------------------------------