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fix_nve.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_NVE_H
			#define FIX_NVE_H

			#include "fix.h"

			namespace LAMMPS_NS {

			class FixNVE : public Fix {
			public:
			FixNVE(class LAMMPS , int, char *);
			int setmask();
			virtual void init();
			virtual void initial_integrate(int);
			virtual void final_integrate();
			void initial_integrate_respa(int, int, int);
			void final_integrate_respa(int);
			void reset_dt();

			protected:
			double dtv,dtf;
			double *step_respa;
			int mass_require;
			};

			}

			#endif