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lammps/src/improper.h
2024-10-06 00:25:53 -04:00

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/* -*- c++ -*- ----------------------------------------------------------
LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
https://www.lammps.org/, Sandia National Laboratories
LAMMPS development team: developers@lammps.org
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 LMP_IMPROPER_H
#define LMP_IMPROPER_H
#include "pointers.h" // IWYU pragma: export
namespace LAMMPS_NS {
class Improper : protected Pointers {
friend class ThrOMP;
friend class FixOMP;
public:
int allocated;
int *setflag;
int writedata; // 1 if writes coeffs to data file
int born_matrix_enable;
double energy; // accumulated energies
double virial[6]; // accumulated virial: xx,yy,zz,xy,xz,yz
double *eatom, **vatom; // accumulated per-atom energy/virial
double **cvatom; // accumulated per-atom centroid virial
int centroidstressflag; // centroid stress compared to two-body stress
// CENTROID_SAME = same as two-body stress
// CENTROID_AVAIL = different and implemented
// CENTROID_NOTAVAIL = different, not yet implemented
int symmatoms[4]; // symmetry atom(s) of improper style
// value of 0: interchangable atoms
// value of 1: central atom
// values >1: additional atoms of symmetry
// KOKKOS host/device flag and data masks
ExecutionSpace execution_space;
unsigned int datamask_read, datamask_modify;
int copymode, kokkosable;
Improper(class LAMMPS *);
~Improper() override;
virtual void init();
virtual void init_style() {}
virtual void compute(int, int) = 0;
virtual void settings(int, char **);
virtual void coeff(int, char **) = 0;
virtual void write_restart(FILE *) = 0;
virtual void read_restart(FILE *) = 0;
virtual void write_restart_settings(FILE *) {};
virtual void read_restart_settings(FILE *) {};
virtual void write_data(FILE *) {}
virtual double memory_usage();
virtual void born_matrix(int /*dtype*/, int /*at1*/, int /*at2*/, int /*at3*/, int /*at4*/,
double &du, double &du2)
{
du = 0.0;
du2 = 0.0;
}
protected:
int suffix_flag; // suffix compatibility flag
int evflag;
int eflag_either, eflag_global, eflag_atom;
int vflag_either, vflag_global, vflag_atom, cvflag_atom;
int maxeatom, maxvatom, maxcvatom;
void ev_init(int eflag, int vflag, int alloc = 1)
{
if (eflag || vflag)
ev_setup(eflag, vflag, alloc);
else
evflag = eflag_either = eflag_global = eflag_atom = vflag_either = vflag_global = vflag_atom =
cvflag_atom = 0;
}
void ev_setup(int, int, int alloc = 1);
void ev_tally(int, int, int, int, int, int, double, double *, double *, double *, double, double,
double, double, double, double, double, double, double);
void problem(const char *, int, int, int, int, int);
};
} // namespace LAMMPS_NS
#endif