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working changes to fix bitorsion

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This commit is contained in:
Steve Plimpton
2022-03-30 13:02:15 -06:00
parent 9162d8842d
commit d28b9818bb
1 changed files with 12 additions and 30 deletions
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42
src/AMOEBA/fix_amoeba_bitorsion.cpp
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@ -379,6 +379,8 @@ void FixAmoebaBiTorsion::post_force(int vflag)
double **f = atom->f;
int nlocal = atom->nlocal;
//printf("Nbitorsions %d\n",nbitorsion_list);
for (int n = 0; n < nbitorsion_list; n++) {
ia = bitorsion_list[n][0];
@ -467,31 +469,21 @@ void FixAmoebaBiTorsion::post_force(int vflag)
nlo = 0;
nhi = nx-1;
if (n == 0) printf("Starting Ang1 search: nlo %d nhi %d\n",nlo,nhi);
while (nhi-nlo > 1) {
nt = (nhi+nlo) / 2;
if (ttx[btype][nt] > value1) nhi = nt;
else nlo = nt;
if (n == 0)
printf(" iteration on Ang1: nlo %d nhi %d ttx[nt] %g val1 %g\n",
nlo,nhi,ttx[btype][nt],value1);
}
xlo = nlo;
if (n == 0) printf("End of Ang1 search: xlo %d\n",xlo);
nlo = 0;
nhi = ny-1;
if (n == 0) printf("Starting Ang2 search: nlo %d nhi %d\n",nlo,nhi);
while (nhi-nlo > 1) {
nt = (nhi + nlo)/2;
if (tty[btype][nt] > value2) nhi = nt;
else nlo = nt;
if (n == 0)
printf(" iteration on Ang2: nlo %d nhi %d tty[nt] %g val2 %g\n",
nlo,nhi,tty[btype][nt],value2);
}
ylo = nlo;
if (n == 0) printf("End of Ang2 search: xlo %d\n",ylo);
// fill ftt,ft1,ft2,ft12 vecs with spline coeffs near xlo,ylo grid pt
// ttx,tty,tbf,tbx,tby,tbxy are 0-indexed here, 1-indexed in Tinker
@ -536,25 +528,15 @@ void FixAmoebaBiTorsion::post_force(int vflag)
// DEBUG
if (n == 0) {
printf("BiTorsion: %d %d %d %d %d: type %d\n",
atom->tag[ia],
atom->tag[ib],
atom->tag[ic],
atom->tag[id],
atom->tag[ie],
btype);
printf(" nx/ny %d %d\n",nx,ny);
printf(" xlo/ylo %d %d pos1/2 %d %d\n",xlo+1,ylo+1,pos1+1,pos2+1);
printf(" x1l/x1u %g %g y1l/y1u %g %g\n",x1l,x1u,y1l,y1u);
printf(" ftt 0123: %g %g %g %g\n",ftt[0],ftt[1],ftt[2],ftt[3]);
printf(" ft1 0123: %g %g %g %g\n",ft1[0],ft1[1],ft1[2],ft1[3]);
printf(" ft2 0123: %g %g %g %g\n",ft2[0],ft2[1],ft2[2],ft2[3]);
printf(" ft12 0123: %g %g %g %g\n",ft12[0],ft12[1],ft12[2],ft12[3]);
printf(" value1/2: %g %g eng %g\n",value1,value2,e);
printf(" dedang1/2: %g %g\n",dedang1,dedang2);
}
/*
printf("BiTorsion: %d %d %d %d %d: angle12 %g %g: eng %g\n",
atom->tag[ia],
atom->tag[ib],
atom->tag[ic],
atom->tag[id],
atom->tag[ie],
angle1,angle2,e);
*/
// fraction of energy for each atom
@ -1278,7 +1260,7 @@ void FixAmoebaBiTorsion::bcuint1(double *y, double *y1,
ansy = ansy1 = ansy2 = 0.0;
for (int i = 4; i >= 1; i--) {
for (int i = 3; i >= 0; i--) {
ansy = t*ansy + ((c[i][3]*u+c[i][2])*u+c[i][1])*u + c[i][0];
ansy1 = u*ansy1 + (3.0*c[3][i]*t+2.0*c[2][i])*t + c[1][i];
ansy2 = t*ansy2 + (3.0*c[i][3]*u+2.0*c[i][2])*u + c[i][1];