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fix_press_berendsen.h
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			/* ----------------------------------------------------------------------
			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.
			------------------------------------------------------------------------- */

			#ifndef FIX_PRESS_BERENDSEN_H
			#define FIX_PRESS_BERENDSEN_H

			#include "fix.h"

			namespace LAMMPS_NS {

			class FixPressBerendsen : public Fix {
			public:
			FixPressBerendsen(class LAMMPS , int, char *);
			~FixPressBerendsen();
			int setmask();
			void init();
			void setup(int);
			void end_of_step();
			int modify_param(int, char **);

			protected:
			int dimension,which;
			double bulkmodulus;

			int press_couple,allremap;
			int p_flag[3]; // 1 if control P on this dim, 0 if not
			double p_start[3],p_stop[3];
			double p_period[3],p_target[3];
			double p_current[3],dilation[3];
			double factor[3];
			int kspace_flag; // 1 if KSpace invoked, 0 if not
			int nrigid; // number of rigid fixes
			int *rfix; // indices of rigid fixes

			char id_temp,id_press;
			class Compute temperature,pressure;
			int tflag,pflag;

			void couple();
			void remap();
			};

			}

			#endif