/* -*- c++ -*- ----------------------------------------------------------
   LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
   http://lammps.sandia.gov, Sandia National Laboratories
   Steve Plimpton, sjplimp@sandia.gov

   Copyright (2003) Sandia Corporation.  Under the terms of Contract
   DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
   certain rights in this software.  This software is distributed under
   the GNU General Public License.

   See the README file in the top-level LAMMPS directory.

   Identical to dihedral harmonic, except if all k's are zero the
   force loop is skipped.

------------------------------------------------------------------------- */

#ifdef DIHEDRAL_CLASS

DihedralStyle(zero,DihedralZero)

#else

#ifndef LMP_DIHEDRAL_ZERO_H
#define LMP_DIHEDRAL_ZERO_H

#include <stdio.h>
#include "dihedral.h"

namespace LAMMPS_NS {

class DihedralZero : public Dihedral {
 public:
  DihedralZero(class LAMMPS *);
  virtual ~DihedralZero();
  virtual void compute(int, int);
  virtual void coeff(int, char **);
  virtual void settings(int, char **);

  void write_restart(FILE *);
  void read_restart(FILE *);
  void write_data(FILE *);

 protected:
  int coeffflag;

  virtual void allocate();
};

}

#endif
#endif

