fix_lb_pc.h
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	/* -- 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.
	------------------------------------------------------------------------- */

	#ifdef FIX_CLASS

	FixStyle(lb/pc,FixLbPC)

	#else

	#ifndef LMP_FIX_LB_PC_H
	#define LMP_FIX_LB_PC_H

	#include "fix.h"

	namespace LAMMPS_NS {

	class FixLbPC : public Fix {
	public:
	FixLbPC(class LAMMPS , int, char *);
	~FixLbPC();
	int setmask();
	void init();
	void initial_integrate(int);
	void final_integrate();

	void grow_arrays(int);
	void copy_arrays(int, int, int);
	// void set_arrays(int);
	int pack_exchange(int, double *);
	int unpack_exchange(int, double *);


	private:
	double dtv,dtf;
	int me;
	double *Gamma_MD;
	double expminusdttimesgamma;
	double DMDcoeff;

	double **force_old;
	double **up;
	double **up_old;

	void compute_up(void);
	class FixLbFluid *fix_lb_fluid;
	};

	}

	#endif
	#endif