angle_harmonic.h
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	/* ----------------------------------------------------------------------
	LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
	www.cs.sandia.gov/~sjplimp/lammps.html
	Steve Plimpton, sjplimp@sandia.gov, Sandia National Laboratories

	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 ANGLE_HARMONIC_H
	#define ANGLE_HARMONIC_H

	#include "stdio.h"
	#include "angle.h"

	class AngleHarmonic : public Angle {
	public:
	AngleHarmonic() {}
	~AngleHarmonic();
	void compute(int, int);
	void coeff(int, int, char **);
	double equilibrium_angle(int);
	void write_restart(FILE *);
	void read_restart(FILE *);
	double single(int, int, int, int, double);

	private:
	double k,theta0;

	void allocate();
	};

	#endif