66 lines
2.0 KiB
C++
66 lines
2.0 KiB
C++
/* -*- c++ -*- ----------------------------------------------------------
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LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
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https://www.lammps.org/, Sandia National Laboratories
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LAMMPS development team: developers@lammps.org
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Copyright (2003) Sandia Corporation. Under the terms of Contract
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DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
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certain rights in this software. This software is distributed under
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the GNU General Public License.
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See the README file in the top-level LAMMPS directory.
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Pair zero is a dummy pair interaction useful for requiring a
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force cutoff distance in the absence of pair-interactions or
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with hybrid/overlay if a larger force cutoff distance is required.
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This can be used in conjunction with bond/create to create bonds
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that are longer than the cutoff of a given force field, or to
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calculate radial distribution functions for models without
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pair interactions.
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------------------------------------------------------------------------- */
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#ifdef PAIR_CLASS
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// clang-format off
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PairStyle(zero,PairZero);
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// clang-format on
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#else
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#ifndef LMP_PAIR_ZERO_H
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#define LMP_PAIR_ZERO_H
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#include "pair.h"
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namespace LAMMPS_NS {
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class PairZero : public Pair {
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public:
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PairZero(class LAMMPS *);
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~PairZero() override;
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void compute(int, int) override;
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void compute_outer(int, int) override;
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void settings(int, char **) override;
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void coeff(int, char **) override;
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void init_style() override;
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double init_one(int, int) override;
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void write_restart(FILE *) override;
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void read_restart(FILE *) override;
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void write_restart_settings(FILE *) override;
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void read_restart_settings(FILE *) override;
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void write_data(FILE *) override;
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void write_data_all(FILE *) override;
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double single(int, int, int, int, double, double, double, double &) override;
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protected:
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double cut_global;
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double **cut;
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int coeffflag;
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int fullneighflag; // 0 for half list, 1 for full list
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virtual void allocate();
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};
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} // namespace LAMMPS_NS
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#endif
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#endif
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