angle_class2.h
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angle_class2.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_CLASS2_H
			#define ANGLE_CLASS2_H

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

			class AngleClass2 : public Angle {
			public:
			AngleClass2() {}
			~AngleClass2();
			void compute(int, int);
			void coeff(int, int, char **);
			double equilibrium_angle(int);
			void write_restart(FILE *);
			void read_restart(FILE *);

			private:
			double theta0,k2,k3,k4;
			double bb_k,bb_r1,*bb_r2;
			double ba_k1,ba_k2,ba_r1,ba_r2;
			int setflag_a,setflag_bb,*setflag_ba;

			void allocate();
			};

			#endif