/usr/include/liggghts/fix_move_mesh.h is in libliggghts-dev 2.3.8-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 | /* ----------------------------------------------------------------------
   LIGGGHTS - LAMMPS Improved for General Granular and Granular Heat
   Transfer Simulations
   LIGGGHTS is part of the CFDEMproject
   www.liggghts.com | www.cfdem.com
   Christoph Kloss, christoph.kloss@cfdem.com
   Copyright 2009-2012 JKU Linz
   Copyright 2012-     DCS Computing GmbH, Linz
   LIGGGHTS is based on LAMMPS
   LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
   http://lammps.sandia.gov, Sandia National Laboratories
   Steve Plimpton, sjplimp@sandia.gov
   This software is distributed under the GNU General Public License.
   See the README file in the top-level directory.
------------------------------------------------------------------------- */
/* ----------------------------------------------------------------------
   Contributing authors:
   Christoph Kloss (JKU Linz, DCS Computing GmbH, Linz)
   Philippe Seil (JKU Linz)
------------------------------------------------------------------------- */
#ifdef FIX_CLASS
FixStyle(move/mesh,FixMoveMesh)
FixStyle(move/mesh/gran,FixMoveMesh) // for backward compatibility
#else
#ifndef FIX_MOVE_MESH_H
#define FIX_MOVE_MESH_H
#include "fix.h"
#include "container.h"
namespace LAMMPS_NS
{
  class FixMoveMesh : public LAMMPS_NS::Fix
  {
      public:
        FixMoveMesh(LAMMPS *lmp, int narg, char **arg);
        virtual ~FixMoveMesh();
        void setup(int vflag);
        void pre_delete(bool unfixflag);
        int setmask();
        void initial_integrate(int);
        void final_integrate();
        void write_restart(FILE *);
        void restart(char *);
        void add_reference_point(double *point);
        void get_reference_point(double *point);
        void reset_reference_point();
        class AbstractMesh * mesh()
        { return mesh_; }
     protected:
        class FixMesh* fixMesh()
        { return fix_mesh_; }
      private:
        class FixMesh *fix_mesh_;
        class MeshMover *move_;
        class AbstractMesh *mesh_;
        double time_;
        double time_since_setup_;
        double reference_point_[3];
  };
} /* namespace LAMMPS_NS */
#endif
#endif
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