/* ----------------------------------------------------------------------
   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.
------------------------------------------------------------------------- */

#ifdef PAIR_CLASS

PairStyle(gran/hooke/history,PairGranHookeHistory)

#else

#ifndef LMP_PAIR_GRAN_HOOKE_HISTORY_H
#define LMP_PAIR_GRAN_HOOKE_HISTORY_H

#include "pair.h"

namespace LAMMPS_NS {

class PairGranHookeHistory : public Pair {
 public:
  PairGranHookeHistory(class LAMMPS *);
  ~PairGranHookeHistory();
  virtual void compute(int, int);
  virtual void settings(int, char **);
  void coeff(int, char **);
  void init_style();
  void init_list(int, class NeighList *);
  double init_one(int, int);
  void write_restart(FILE *);
  void read_restart(FILE *);
  void write_restart_settings(FILE *);
  void read_restart_settings(FILE *);
  void reset_dt();

 protected:
  double kn,kt,gamman,gammat,xmu;
  int dampflag;
  double dt;
  int freeze_group_bit;
  int history;

  bigint laststep;
  class FixShearHistory *fix_history;
  int shearupdate;

  double *onerad_dynamic,*onerad_frozen;
  double *maxrad_dynamic,*maxrad_frozen;

  void allocate();
};

}

#endif
#endif
