/usr/include/liggghts/fix_addforce.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 87 88 89 90 91 | /* ----------------------------------------------------------------------
LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
http://lammps.sandia.gov, Sandia National Laboratories
Steve Plimpton, sjplimp@sandia.gov
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.
------------------------------------------------------------------------- */
#ifdef FIX_CLASS
FixStyle(addforce,FixAddForce)
#else
#ifndef LMP_FIX_ADDFORCE_H
#define LMP_FIX_ADDFORCE_H
#include "fix.h"
namespace LAMMPS_NS {
class FixAddForce : public Fix {
public:
FixAddForce(class LAMMPS *, int, char **);
~FixAddForce();
int setmask();
void init();
void setup(int);
void min_setup(int);
void post_force(int);
void post_force_respa(int, int, int);
void min_post_force(int);
double compute_scalar();
double compute_vector(int);
double memory_usage();
private:
double xvalue,yvalue,zvalue;
int varflag,iregion;
char *xstr,*ystr,*zstr,*estr;
char *idregion;
int xvar,yvar,zvar,evar,xstyle,ystyle,zstyle,estyle;
double foriginal[4],foriginal_all[4];
int force_flag;
int nlevels_respa;
int maxatom;
double **sforce;
};
}
#endif
#endif
/* ERROR/WARNING messages:
E: Illegal ... command
Self-explanatory. Check the input script syntax and compare to the
documentation for the command. You can use -echo screen as a
command-line option when running LAMMPS to see the offending line.
E: Region ID for fix addforce does not exist
Self-explanatory.
E: Variable name for fix addforce does not exist
Self-explanatory.
E: Variable for fix addforce is invalid style
Self-explanatory.
E: Cannot use variable energy with constant force in fix addforce
This is because for constant force, LAMMPS can compute the change
in energy directly.
E: Must use variable energy with fix addforce
Must define an energy vartiable when applyting a dynamic
force during minimization.
*/
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