git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@925 f3b2605a-c512-4ea7-a41b-209d697bcdaa

This commit is contained in:
sjplimp 2007-10-03 16:13:59 +00:00
parent c749b047a3
commit b0ce5b39be
2 changed files with 42 additions and 35 deletions

View File

@ -25,9 +25,8 @@
#include "comm.h"
#include "force.h"
#include "neighbor.h"
#include "update.h"
#include "neigh_list.h"
#include "integrate.h"
#include "respa.h"
#include "memory.h"
#include "error.h"
@ -75,20 +74,18 @@ PairGayBerne::~PairGayBerne()
void PairGayBerne::compute(int eflag, int vflag)
{
int i,j,k,m,numneigh,itype,jtype;
int i,j,ii,jj,m,inum,jnum,itype,jtype;
double one_eng,rsq,r2inv,r6inv,forcelj;
double fforce[3],ttor[3],rtor[3],r12[3];
double a1[3][3],b1[3][3],g1[3][3],a2[3][3],b2[3][3],g2[3][3],temp[3][3];
int *neighs;
int *ilist,*jlist,*numneigh,**firstneigh;
double factor_lj;
double **f;
eng_vdwl = 0.0;
if (vflag) for (i = 0; i < 6; i++) virial[i] = 0.0;
if (vflag == 2) f = update->f_pair;
else f = atom->f;
double **x = atom->x;
double **f = atom->f;
double **quat = atom->quat;
double **tor = atom->torque;
int *type = atom->type;
@ -97,12 +94,16 @@ void PairGayBerne::compute(int eflag, int vflag)
double *special_lj = force->special_lj;
int newton_pair = force->newton_pair;
inum = list->inum;
ilist = list->ilist;
numneigh = list->numneigh;
firstneigh = list->firstneigh;
// loop over neighbors of my atoms
for (i = 0; i < nlocal; i++) {
for (ii = 0; ii < inum; ii++) {
i = ilist[ii];
itype = type[i];
neighs = neighbor->firstneigh[i];
numneigh = neighbor->numneigh[i];
MathExtra::quat_to_mat_trans(quat[i],a1);
MathExtra::diag_times3(well[itype],a1,temp);
@ -110,8 +111,11 @@ void PairGayBerne::compute(int eflag, int vflag)
MathExtra::diag_times3(shape[itype],a1,temp);
MathExtra::transpose_times3(a1,temp,g1);
for (k = 0; k < numneigh; k++) {
j = neighs[k];
jlist = firstneigh[i];
jnum = numneigh[i];
for (jj = 0; jj < jnum; jj++) {
j = jlist[jj];
if (j < nall) factor_lj = 1.0;
else {
@ -315,6 +319,31 @@ void PairGayBerne::coeff(int narg, char **arg)
if (count == 0) error->all("Incorrect args for pair coefficients");
}
/* ----------------------------------------------------------------------
init specific to this pair style
------------------------------------------------------------------------- */
void PairGayBerne::init_style()
{
if (!atom->quat_flag || !atom->torque_flag)
error->all("Pair gayberne requires atom attributes quat, torque");
int irequest = neighbor->request(this);
// per-type shape precalculations
for (int i = 1; i <= atom->ntypes; i++) {
if (setwell[i]) {
double *one = atom->shape[i];
shape[i][0] = one[0]*one[0];
shape[i][1] = one[1]*one[1];
shape[i][2] = one[2]*one[2];
lshape[i] = (one[0]*one[1]+one[2]*one[2])*sqrt(one[0]*one[1]);
}
}
}
/* ----------------------------------------------------------------------
init for one type pair i,j and corresponding j,i
------------------------------------------------------------------------- */
@ -369,28 +398,6 @@ double PairGayBerne::init_one(int i, int j)
return cut[i][j];
}
/* ----------------------------------------------------------------------
check for necessary atom arrays
------------------------------------------------------------------------- */
void PairGayBerne::init_style()
{
if (!atom->quat_flag || !atom->torque_flag)
error->all("Pair gayberne requires atom attributes quat, torque");
// per-type shape precalculations
for (int i = 1; i <= atom->ntypes; i++) {
if (setwell[i]) {
double *one = atom->shape[i];
shape[i][0] = one[0]*one[0];
shape[i][1] = one[1]*one[1];
shape[i][2] = one[2]*one[2];
lshape[i] = (one[0]*one[1]+one[2]*one[2])*sqrt(one[0]*one[1]);
}
}
}
/* ----------------------------------------------------------------------
proc 0 writes to restart file
------------------------------------------------------------------------- */

View File

@ -25,8 +25,8 @@ class PairGayBerne : public Pair {
void compute(int, int);
void settings(int, char **);
void coeff(int, char **);
double init_one(int, int);
void init_style();
double init_one(int, int);
void write_restart(FILE *);
void read_restart(FILE *);
void write_restart_settings(FILE *);