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pair_oxdna_xstk.cpp
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Tue, Jul 23, 01:45

pair_oxdna_xstk.cpp
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/* ----------------------------------------------------------------------
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.
------------------------------------------------------------------------- */
/* ----------------------------------------------------------------------
Contributing author: Oliver Henrich (University of Strathclyde, Glasgow)
------------------------------------------------------------------------- */
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "pair_oxdna_xstk.h"
#include "mf_oxdna.h"
#include "atom.h"
#include "comm.h"
#include "force.h"
#include "neighbor.h"
#include "neigh_list.h"
#include "neigh_request.h"
#include "update.h"
#include "integrate.h"
#include "math_const.h"
#include "memory.h"
#include "error.h"
#include "atom_vec_ellipsoid.h"
#include "math_extra.h"
using namespace LAMMPS_NS;
using namespace MathConst;
using namespace MFOxdna;
/* ---------------------------------------------------------------------- */
PairOxdnaXstk::PairOxdnaXstk(LAMMPS *lmp) : Pair(lmp)
{
single_enable = 0;
writedata = 1;
}
/* ---------------------------------------------------------------------- */
PairOxdnaXstk::~PairOxdnaXstk()
{
if (allocated) {
memory->destroy(setflag);
memory->destroy(cutsq);
memory->destroy(k_xst);
memory->destroy(cut_xst_0);
memory->destroy(cut_xst_c);
memory->destroy(cut_xst_lo);
memory->destroy(cut_xst_hi);
memory->destroy(cut_xst_lc);
memory->destroy(cut_xst_hc);
memory->destroy(b_xst_lo);
memory->destroy(b_xst_hi);
memory->destroy(a_xst1);
memory->destroy(theta_xst1_0);
memory->destroy(dtheta_xst1_ast);
memory->destroy(b_xst1);
memory->destroy(dtheta_xst1_c);
memory->destroy(a_xst2);
memory->destroy(theta_xst2_0);
memory->destroy(dtheta_xst2_ast);
memory->destroy(b_xst2);
memory->destroy(dtheta_xst2_c);
memory->destroy(a_xst3);
memory->destroy(theta_xst3_0);
memory->destroy(dtheta_xst3_ast);
memory->destroy(b_xst3);
memory->destroy(dtheta_xst3_c);
memory->destroy(a_xst4);
memory->destroy(theta_xst4_0);
memory->destroy(dtheta_xst4_ast);
memory->destroy(b_xst4);
memory->destroy(dtheta_xst4_c);
memory->destroy(a_xst7);
memory->destroy(theta_xst7_0);
memory->destroy(dtheta_xst7_ast);
memory->destroy(b_xst7);
memory->destroy(dtheta_xst7_c);
memory->destroy(a_xst8);
memory->destroy(theta_xst8_0);
memory->destroy(dtheta_xst8_ast);
memory->destroy(b_xst8);
memory->destroy(dtheta_xst8_c);
}
}
/* ----------------------------------------------------------------------
compute function for oxDNA pair interactions
hb=hydrogen bonding site
NOTE: The cross-stacking interaction takes place between hb sites
------------------------------------------------------------------------- */
void PairOxdnaXstk::compute(int eflag, int vflag)
{
double delf[3],delta[3],deltb[3]; // force, torque increment;
double evdwl,fpair,finc,tpair,factor_lj;
double delr_hb[3],delr_hb_norm[3],rsq_hb,r_hb,rinv_hb;
double theta1,t1dir[3],cost1;
double theta2,t2dir[3],cost2;
double theta3,t3dir[3],cost3;
double theta4,theta4p,t4dir[3],cost4;
double theta7,theta7p,t7dir[3],cost7;
double theta8,theta8p,t8dir[3],cost8;
// distance COM-h-bonding site
double d_chb=+0.4;
// vectors COM-h-bonding site in lab frame
double ra_chb[3],rb_chb[3];
// quaternions and Cartesian unit vectors in lab frame
double *qa,ax[3],ay[3],az[3];
double *qb,bx[3],by[3],bz[3];
double **x = atom->x;
double **f = atom->f;
double **torque = atom->torque;
int *type = atom->type;
int nlocal = atom->nlocal;
int newton_pair = force->newton_pair;
int *alist,*blist,*numneigh,**firstneigh;
double *special_lj = force->special_lj;
AtomVecEllipsoid *avec = (AtomVecEllipsoid *) atom->style_match("ellipsoid");
AtomVecEllipsoid::Bonus *bonus = avec->bonus;
int a,b,ia,ib,anum,bnum,atype,btype;
double f2,f4t1,f4t4,f4t2,f4t3,f4t7,f4t8;
double df2,df4t1,df4t4,df4t2,df4t3,df4t7,df4t8,rsint;
evdwl = 0.0;
if (eflag || vflag) ev_setup(eflag,vflag);
else evflag = vflag_fdotr = 0;
anum = list->inum;
alist = list->ilist;
numneigh = list->numneigh;
firstneigh = list->firstneigh;
// loop over pair interaction neighbours of my atoms
for (ia = 0; ia < anum; ia++) {
a = alist[ia];
atype = type[a];
qa=bonus[a].quat;
MathExtra::q_to_exyz(qa,ax,ay,az);
ra_chb[0] = d_chb*ax[0];
ra_chb[1] = d_chb*ax[1];
ra_chb[2] = d_chb*ax[2];
blist = firstneigh[a];
bnum = numneigh[a];
for (ib = 0; ib < bnum; ib++) {
b = blist[ib];
factor_lj = special_lj[sbmask(b)]; // = 0 for nearest neighbours
b &= NEIGHMASK;
btype = type[b];
qb=bonus[b].quat;
MathExtra::q_to_exyz(qb,bx,by,bz);
rb_chb[0] = d_chb*bx[0];
rb_chb[1] = d_chb*bx[1];
rb_chb[2] = d_chb*bx[2];
// vector h-bonding site b to a
delr_hb[0] = x[a][0] + ra_chb[0] - x[b][0] - rb_chb[0];
delr_hb[1] = x[a][1] + ra_chb[1] - x[b][1] - rb_chb[1];
delr_hb[2] = x[a][2] + ra_chb[2] - x[b][2] - rb_chb[2];
rsq_hb = delr_hb[0]*delr_hb[0] + delr_hb[1]*delr_hb[1] + delr_hb[2]*delr_hb[2];
r_hb = sqrt(rsq_hb);
rinv_hb = 1.0/r_hb;
delr_hb_norm[0] = delr_hb[0] * rinv_hb;
delr_hb_norm[1] = delr_hb[1] * rinv_hb;
delr_hb_norm[2] = delr_hb[2] * rinv_hb;
f2 = F2(r_hb, k_xst[atype][btype], cut_xst_0[atype][btype],
cut_xst_lc[atype][btype], cut_xst_hc[atype][btype], cut_xst_lo[atype][btype], cut_xst_hi[atype][btype],
b_xst_lo[atype][btype], b_xst_hi[atype][btype], cut_xst_c[atype][btype]);
// early rejection criterium
if (f2) {
cost1 = -1.0*MathExtra::dot3(ax,bx);
if (cost1 > 1.0) cost1 = 1.0;
if (cost1 < -1.0) cost1 = -1.0;
theta1 = acos(cost1);
f4t1 = F4(theta1, a_xst1[atype][btype], theta_xst1_0[atype][btype], dtheta_xst1_ast[atype][btype],
b_xst1[atype][btype], dtheta_xst1_c[atype][btype]);
// early rejection criterium
if (f4t1) {
cost2 = -1.0*MathExtra::dot3(ax,delr_hb_norm);
if (cost2 > 1.0) cost2 = 1.0;
if (cost2 < -1.0) cost2 = -1.0;
theta2 = acos(cost2);
f4t2 = F4(theta2, a_xst2[atype][btype], theta_xst2_0[atype][btype], dtheta_xst2_ast[atype][btype],
b_xst2[atype][btype], dtheta_xst2_c[atype][btype]);
// early rejection criterium
if (f4t2) {
cost3 = MathExtra::dot3(bx,delr_hb_norm);
if (cost3 > 1.0) cost3 = 1.0;
if (cost3 < -1.0) cost3 = -1.0;
theta3 = acos(cost3);
f4t3 = F4(theta3, a_xst3[atype][btype], theta_xst3_0[atype][btype], dtheta_xst3_ast[atype][btype],
b_xst3[atype][btype], dtheta_xst3_c[atype][btype]);
// early rejection criterium
if (f4t3) {
cost4 = MathExtra::dot3(az,bz);
if (cost4 > 1.0) cost4 = 1.0;
if (cost4 < -1.0) cost4 = -1.0;
theta4 = acos(cost4);
theta4p = MY_PI - theta4;
f4t4 = F4(theta4, a_xst4[atype][btype], theta_xst4_0[atype][btype], dtheta_xst4_ast[atype][btype],
b_xst4[atype][btype], dtheta_xst4_c[atype][btype]) +
F4(theta4p, a_xst4[atype][btype], theta_xst4_0[atype][btype], dtheta_xst4_ast[atype][btype],
b_xst4[atype][btype], dtheta_xst4_c[atype][btype]);
// early rejection criterium
if (f4t4) {
cost7 = -1.0*MathExtra::dot3(az,delr_hb_norm);
if (cost7 > 1.0) cost7 = 1.0;
if (cost7 < -1.0) cost7 = -1.0;
theta7 = acos(cost7);
theta7p = MY_PI - theta7;
f4t7 = F4(theta7, a_xst7[atype][btype], theta_xst7_0[atype][btype], dtheta_xst7_ast[atype][btype],
b_xst7[atype][btype], dtheta_xst7_c[atype][btype]) +
F4(theta7p, a_xst7[atype][btype], theta_xst7_0[atype][btype], dtheta_xst7_ast[atype][btype],
b_xst7[atype][btype], dtheta_xst7_c[atype][btype]);
// early rejection criterium
if (f4t7) {
cost8 = MathExtra::dot3(bz,delr_hb_norm);
if (cost8 > 1.0) cost8 = 1.0;
if (cost8 < -1.0) cost8 = -1.0;
theta8 = acos(cost8);
theta8p = MY_PI -theta8;
f4t8 = F4(theta8, a_xst8[atype][btype], theta_xst8_0[atype][btype], dtheta_xst8_ast[atype][btype],
b_xst8[atype][btype], dtheta_xst8_c[atype][btype]) +
F4(theta8p, a_xst8[atype][btype], theta_xst8_0[atype][btype], dtheta_xst8_ast[atype][btype],
b_xst8[atype][btype], dtheta_xst8_c[atype][btype]);
evdwl = f2 * f4t1 * f4t2 * f4t3 * f4t4 * f4t7 * f4t8 * factor_lj;
// early rejection criterium
if (evdwl) {
df2 = DF2(r_hb, k_xst[atype][btype], cut_xst_0[atype][btype],
cut_xst_lc[atype][btype], cut_xst_hc[atype][btype], cut_xst_lo[atype][btype], cut_xst_hi[atype][btype],
b_xst_lo[atype][btype], b_xst_hi[atype][btype]);
df4t1 = DF4(theta1, a_xst1[atype][btype], theta_xst1_0[atype][btype], dtheta_xst1_ast[atype][btype],
b_xst1[atype][btype], dtheta_xst1_c[atype][btype])/sin(theta1);
df4t2 = DF4(theta2, a_xst2[atype][btype], theta_xst2_0[atype][btype], dtheta_xst2_ast[atype][btype],
b_xst2[atype][btype], dtheta_xst2_c[atype][btype])/sin(theta2);
df4t3 = DF4(theta3, a_xst3[atype][btype], theta_xst3_0[atype][btype], dtheta_xst3_ast[atype][btype],
b_xst3[atype][btype], dtheta_xst3_c[atype][btype])/sin(theta3);
rsint = 1.0/sin(theta4);
df4t4 = DF4(theta4, a_xst4[atype][btype], theta_xst4_0[atype][btype], dtheta_xst4_ast[atype][btype],
b_xst4[atype][btype], dtheta_xst4_c[atype][btype])*rsint -
DF4(theta4p, a_xst4[atype][btype], theta_xst4_0[atype][btype], dtheta_xst4_ast[atype][btype],
b_xst4[atype][btype], dtheta_xst4_c[atype][btype])*rsint;
rsint = 1.0/sin(theta7);
df4t7 = DF4(theta7, a_xst7[atype][btype], theta_xst7_0[atype][btype], dtheta_xst7_ast[atype][btype],
b_xst7[atype][btype], dtheta_xst7_c[atype][btype])*rsint -
DF4(theta7p, a_xst7[atype][btype], theta_xst7_0[atype][btype], dtheta_xst7_ast[atype][btype],
b_xst7[atype][btype], dtheta_xst7_c[atype][btype])*rsint;
rsint = 1.0/sin(theta8);
df4t8 = DF4(theta8, a_xst8[atype][btype], theta_xst8_0[atype][btype], dtheta_xst8_ast[atype][btype],
b_xst8[atype][btype], dtheta_xst8_c[atype][btype])*rsint -
DF4(theta8p, a_xst8[atype][btype], theta_xst8_0[atype][btype], dtheta_xst8_ast[atype][btype],
b_xst8[atype][btype], dtheta_xst8_c[atype][btype])*rsint;
// force, torque and virial contribution for forces between h-bonding sites
fpair = 0.0;
delf[0] = 0.0;
delf[1] = 0.0;
delf[2] = 0.0;
delta[0] = 0.0;
delta[1] = 0.0;
delta[2] = 0.0;
deltb[0] = 0.0;
deltb[1] = 0.0;
deltb[2] = 0.0;
// radial force
finc = -df2 * f4t1 * f4t2 * f4t3 * f4t4 * f4t7 * f4t8 * rinv_hb *factor_lj;
fpair += finc;
delf[0] += delr_hb[0] * finc;
delf[1] += delr_hb[1] * finc;
delf[2] += delr_hb[2] * finc;
// theta2 force
if (theta2) {
finc = -f2 * f4t1 * df4t2 * f4t3 * f4t4 * f4t7 * f4t8 * rinv_hb * factor_lj;
fpair += finc;
delf[0] += (delr_hb_norm[0]*cost2 + ax[0]) * finc;
delf[1] += (delr_hb_norm[1]*cost2 + ax[1]) * finc;
delf[2] += (delr_hb_norm[2]*cost2 + ax[2]) * finc;
}
// theta3 force
if (theta3) {
finc = -f2 * f4t1 * f4t2 * df4t3 * f4t4 * f4t7 * f4t8 * rinv_hb * factor_lj;
fpair += finc;
delf[0] += (delr_hb_norm[0]*cost3 - bx[0]) * finc;
delf[1] += (delr_hb_norm[1]*cost3 - bx[1]) * finc;
delf[2] += (delr_hb_norm[2]*cost3 - bx[2]) * finc;
}
// theta7 force
if (theta7) {
finc = -f2 * f4t1 * f4t2 * f4t3 * f4t4 * df4t7 * f4t8 * rinv_hb * factor_lj;
fpair += finc;
delf[0] += (delr_hb_norm[0]*cost7 + az[0]) * finc;
delf[1] += (delr_hb_norm[1]*cost7 + az[1]) * finc;
delf[2] += (delr_hb_norm[2]*cost7 + az[2]) * finc;
}
// theta8 force
if (theta8) {
finc = -f2 * f4t1 * f4t2 * f4t3 * f4t4 * f4t7 * df4t8 * rinv_hb * factor_lj;
fpair += finc;
delf[0] += (delr_hb_norm[0]*cost8 - bz[0]) * finc;
delf[1] += (delr_hb_norm[1]*cost8 - bz[1]) * finc;
delf[2] += (delr_hb_norm[2]*cost8 - bz[2]) * finc;
}
// increment forces and torques
f[a][0] += delf[0];
f[a][1] += delf[1];
f[a][2] += delf[2];
MathExtra::cross3(ra_chb,delf,delta);
torque[a][0] += delta[0];
torque[a][1] += delta[1];
torque[a][2] += delta[2];
if (newton_pair || b < nlocal) {
f[b][0] -= delf[0];
f[b][1] -= delf[1];
f[b][2] -= delf[2];
MathExtra::cross3(rb_chb,delf,deltb);
torque[b][0] -= deltb[0];
torque[b][1] -= deltb[1];
torque[b][2] -= deltb[2];
}
// increment energy and virial
if (evflag) ev_tally(a,b,nlocal,newton_pair,evdwl,0.0,fpair,delr_hb[0],delr_hb[1],delr_hb[2]);
// pure torques not expressible as r x f
delta[0] = 0.0;
delta[1] = 0.0;
delta[2] = 0.0;
deltb[0] = 0.0;
deltb[1] = 0.0;
deltb[2] = 0.0;
// theta1 torque
if (theta1) {
tpair = -f2 * df4t1 * f4t2 * f4t3 * f4t4 * f4t7 * f4t8 * factor_lj;
MathExtra::cross3(ax,bx,t1dir);
delta[0] += t1dir[0]*tpair;
delta[1] += t1dir[1]*tpair;
delta[2] += t1dir[2]*tpair;
deltb[0] += t1dir[0]*tpair;
deltb[1] += t1dir[1]*tpair;
deltb[2] += t1dir[2]*tpair;
}
// theta2 torque
if (theta2) {
tpair = -f2 * f4t1 * df4t2 * f4t3 * f4t4 * f4t7 * f4t8 * factor_lj;
MathExtra::cross3(ax,delr_hb_norm,t2dir);
delta[0] += t2dir[0]*tpair;
delta[1] += t2dir[1]*tpair;
delta[2] += t2dir[2]*tpair;
}
// theta3 torque
if (theta3) {
tpair = -f2 * f4t1 * f4t2 * df4t3 * f4t4 * f4t7 * f4t8 * factor_lj;
MathExtra::cross3(bx,delr_hb_norm,t3dir);
deltb[0] += t3dir[0]*tpair;
deltb[1] += t3dir[1]*tpair;
deltb[2] += t3dir[2]*tpair;
}
// theta4 torque
if (theta4 && theta4p) {
tpair = -f2 * f4t1 * f4t2 * f4t3 * df4t4 * f4t7 * f4t8 * factor_lj;
MathExtra::cross3(bz,az,t4dir);
delta[0] += t4dir[0]*tpair;
delta[1] += t4dir[1]*tpair;
delta[2] += t4dir[2]*tpair;
deltb[0] += t4dir[0]*tpair;
deltb[1] += t4dir[1]*tpair;
deltb[2] += t4dir[2]*tpair;
}
// theta7 torque
if (theta7) {
tpair = -f2 * f4t1 * f4t2 * f4t3 * f4t4 * df4t7 * f4t8 * factor_lj;
MathExtra::cross3(az,delr_hb_norm,t7dir);
delta[0] += t7dir[0]*tpair;
delta[1] += t7dir[1]*tpair;
delta[2] += t7dir[2]*tpair;
}
// theta8 torque
if (theta8) {
tpair = -f2 * f4t1 * f4t2 * f4t3 * f4t4 * f4t7 * df4t8 * factor_lj;
MathExtra::cross3(bz,delr_hb_norm,t8dir);
deltb[0] += t8dir[0]*tpair;
deltb[1] += t8dir[1]*tpair;
deltb[2] += t8dir[2]*tpair;
}
// increment torques
torque[a][0] += delta[0];
torque[a][1] += delta[1];
torque[a][2] += delta[2];
if (newton_pair || b < nlocal) {
torque[b][0] -= deltb[0];
torque[b][1] -= deltb[1];
torque[b][2] -= deltb[2];
}
}
}
}
}
}
}
}// end early rejection criteria
}
}
if (vflag_fdotr) virial_fdotr_compute();
}
/* ----------------------------------------------------------------------
allocate all arrays
------------------------------------------------------------------------- */
void PairOxdnaXstk::allocate()
{
allocated = 1;
int n = atom->ntypes;
memory->create(setflag,n+1,n+1,"pair:setflag");
for (int i = 1; i <= n; i++)
for (int j = i; j <= n; j++)
setflag[i][j] = 0;
memory->create(cutsq,n+1,n+1,"pair:cutsq");
memory->create(k_xst,n+1,n+1,"pair:k_xst");
memory->create(cut_xst_0,n+1,n+1,"pair:cut_xst_0");
memory->create(cut_xst_c,n+1,n+1,"pair:cut_xst_c");
memory->create(cut_xst_lo,n+1,n+1,"pair:cut_xst_lo");
memory->create(cut_xst_hi,n+1,n+1,"pair:cut_xst_hi");
memory->create(cut_xst_lc,n+1,n+1,"pair:cut_xst_lc");
memory->create(cut_xst_hc,n+1,n+1,"pair:cut_xst_hc");
memory->create(b_xst_lo,n+1,n+1,"pair:b_xst_lo");
memory->create(b_xst_hi,n+1,n+1,"pair:b_xst_hi");
memory->create(cutsq_xst_hc,n+1,n+1,"pair:cutsq_xst_hc");
memory->create(a_xst1,n+1,n+1,"pair:a_xst1");
memory->create(theta_xst1_0,n+1,n+1,"pair:theta_xst1_0");
memory->create(dtheta_xst1_ast,n+1,n+1,"pair:dtheta_xst1_ast");
memory->create(b_xst1,n+1,n+1,"pair:b_xst1");
memory->create(dtheta_xst1_c,n+1,n+1,"pair:dtheta_xst1_c");
memory->create(a_xst2,n+1,n+1,"pair:a_xst2");
memory->create(theta_xst2_0,n+1,n+1,"pair:theta_xst2_0");
memory->create(dtheta_xst2_ast,n+1,n+1,"pair:dtheta_xst2_ast");
memory->create(b_xst2,n+1,n+1,"pair:b_xst2");
memory->create(dtheta_xst2_c,n+1,n+1,"pair:dtheta_xst2_c");
memory->create(a_xst3,n+1,n+1,"pair:a_xst3");
memory->create(theta_xst3_0,n+1,n+1,"pair:theta_xst3_0");
memory->create(dtheta_xst3_ast,n+1,n+1,"pair:dtheta_xst3_ast");
memory->create(b_xst3,n+1,n+1,"pair:b_xst3");
memory->create(dtheta_xst3_c,n+1,n+1,"pair:dtheta_xst3_c");
memory->create(a_xst4,n+1,n+1,"pair:a_xst4");
memory->create(theta_xst4_0,n+1,n+1,"pair:theta_xst4_0");
memory->create(dtheta_xst4_ast,n+1,n+1,"pair:dtheta_xst4_ast");
memory->create(b_xst4,n+1,n+1,"pair:b_xst4");
memory->create(dtheta_xst4_c,n+1,n+1,"pair:dtheta_xst4_c");
memory->create(a_xst7,n+1,n+1,"pair:a_xst7");
memory->create(theta_xst7_0,n+1,n+1,"pair:theta_xst7_0");
memory->create(dtheta_xst7_ast,n+1,n+1,"pair:dtheta_xst7_ast");
memory->create(b_xst7,n+1,n+1,"pair:b_xst7");
memory->create(dtheta_xst7_c,n+1,n+1,"pair:dtheta_xst7_c");
memory->create(a_xst8,n+1,n+1,"pair:a_xst8");
memory->create(theta_xst8_0,n+1,n+1,"pair:theta_xst8_0");
memory->create(dtheta_xst8_ast,n+1,n+1,"pair:dtheta_xst8_ast");
memory->create(b_xst8,n+1,n+1,"pair:b_xst8");
memory->create(dtheta_xst8_c,n+1,n+1,"pair:dtheta_xst8_c");
}
/* ----------------------------------------------------------------------
global settings
------------------------------------------------------------------------- */
void PairOxdnaXstk::settings(int narg, char **arg)
{
if (narg != 0) error->all(FLERR,"Illegal pair_style command");
}
/* ----------------------------------------------------------------------
set coeffs for one or more type pairs
------------------------------------------------------------------------- */
void PairOxdnaXstk::coeff(int narg, char **arg)
{
int count;
if (narg != 25) error->all(FLERR,"Incorrect args for pair coefficients in oxdna/xstk");
if (!allocated) allocate();
int ilo,ihi,jlo,jhi;
force->bounds(FLERR,arg[0],atom->ntypes,ilo,ihi);
force->bounds(FLERR,arg[1],atom->ntypes,jlo,jhi);
// cross-stacking interaction
count = 0;
double k_xst_one, cut_xst_0_one, cut_xst_c_one, cut_xst_lo_one, cut_xst_hi_one;
double b_xst_lo_one, b_xst_hi_one, cut_xst_lc_one, cut_xst_hc_one;
double a_xst1_one, theta_xst1_0_one, dtheta_xst1_ast_one;
double b_xst1_one, dtheta_xst1_c_one;
double a_xst2_one, theta_xst2_0_one, dtheta_xst2_ast_one;
double b_xst2_one, dtheta_xst2_c_one;
double a_xst3_one, theta_xst3_0_one, dtheta_xst3_ast_one;
double b_xst3_one, dtheta_xst3_c_one;
double a_xst4_one, theta_xst4_0_one, dtheta_xst4_ast_one;
double b_xst4_one, dtheta_xst4_c_one;
double a_xst7_one, theta_xst7_0_one, dtheta_xst7_ast_one;
double b_xst7_one, dtheta_xst7_c_one;
double a_xst8_one, theta_xst8_0_one, dtheta_xst8_ast_one;
double b_xst8_one, dtheta_xst8_c_one;
k_xst_one = force->numeric(FLERR,arg[2]);
cut_xst_0_one = force->numeric(FLERR,arg[3]);
cut_xst_c_one = force->numeric(FLERR,arg[4]);
cut_xst_lo_one = force->numeric(FLERR,arg[5]);
cut_xst_hi_one = force->numeric(FLERR,arg[6]);
a_xst1_one = force->numeric(FLERR,arg[7]);
theta_xst1_0_one = force->numeric(FLERR,arg[8]);
dtheta_xst1_ast_one = force->numeric(FLERR,arg[9]);
a_xst2_one = force->numeric(FLERR,arg[10]);
theta_xst2_0_one = force->numeric(FLERR,arg[11]);
dtheta_xst2_ast_one = force->numeric(FLERR,arg[12]);
a_xst3_one = force->numeric(FLERR,arg[13]);
theta_xst3_0_one = force->numeric(FLERR,arg[14]);
dtheta_xst3_ast_one = force->numeric(FLERR,arg[15]);
a_xst4_one = force->numeric(FLERR,arg[16]);
theta_xst4_0_one = force->numeric(FLERR,arg[17]);
dtheta_xst4_ast_one = force->numeric(FLERR,arg[18]);
a_xst7_one = force->numeric(FLERR,arg[19]);
theta_xst7_0_one = force->numeric(FLERR,arg[20]);
dtheta_xst7_ast_one = force->numeric(FLERR,arg[21]);
a_xst8_one = force->numeric(FLERR,arg[22]);
theta_xst8_0_one = force->numeric(FLERR,arg[23]);
dtheta_xst8_ast_one = force->numeric(FLERR,arg[24]);
b_xst_lo_one = 0.25 * (cut_xst_lo_one - cut_xst_0_one) * (cut_xst_lo_one - cut_xst_0_one)/
(0.5 * (cut_xst_lo_one - cut_xst_0_one) * (cut_xst_lo_one - cut_xst_0_one) -
k_xst_one * 0.5 * (cut_xst_0_one -cut_xst_c_one) * (cut_xst_0_one - cut_xst_c_one)/k_xst_one);
cut_xst_lc_one = cut_xst_lo_one - 0.5 * (cut_xst_lo_one - cut_xst_0_one)/b_xst_lo_one;;
b_xst_hi_one = 0.25 * (cut_xst_hi_one - cut_xst_0_one) * (cut_xst_hi_one - cut_xst_0_one)/
(0.5 * (cut_xst_hi_one - cut_xst_0_one) * (cut_xst_hi_one - cut_xst_0_one) -
k_xst_one * 0.5 * (cut_xst_0_one -cut_xst_c_one) * (cut_xst_0_one - cut_xst_c_one)/k_xst_one);
cut_xst_hc_one = cut_xst_hi_one - 0.5* (cut_xst_hi_one - cut_xst_0_one)/b_xst_hi_one;
b_xst1_one = a_xst1_one*a_xst1_one*dtheta_xst1_ast_one*dtheta_xst1_ast_one/(1-a_xst1_one*dtheta_xst1_ast_one*dtheta_xst1_ast_one);
dtheta_xst1_c_one = 1/(a_xst1_one*dtheta_xst1_ast_one);
b_xst2_one = a_xst2_one*a_xst2_one*dtheta_xst2_ast_one*dtheta_xst2_ast_one/(1-a_xst2_one*dtheta_xst2_ast_one*dtheta_xst2_ast_one);
dtheta_xst2_c_one = 1/(a_xst2_one*dtheta_xst2_ast_one);
b_xst3_one = a_xst3_one*a_xst3_one*dtheta_xst3_ast_one*dtheta_xst3_ast_one/(1-a_xst3_one*dtheta_xst3_ast_one*dtheta_xst3_ast_one);
dtheta_xst3_c_one = 1/(a_xst3_one*dtheta_xst3_ast_one);
b_xst4_one = a_xst4_one*a_xst4_one*dtheta_xst4_ast_one*dtheta_xst4_ast_one/(1-a_xst4_one*dtheta_xst4_ast_one*dtheta_xst4_ast_one);
dtheta_xst4_c_one = 1/(a_xst4_one*dtheta_xst4_ast_one);
b_xst7_one = a_xst7_one*a_xst7_one*dtheta_xst7_ast_one*dtheta_xst7_ast_one/(1-a_xst7_one*dtheta_xst7_ast_one*dtheta_xst7_ast_one);
dtheta_xst7_c_one = 1/(a_xst7_one*dtheta_xst7_ast_one);
b_xst8_one = a_xst8_one*a_xst8_one*dtheta_xst8_ast_one*dtheta_xst8_ast_one/(1-a_xst8_one*dtheta_xst8_ast_one*dtheta_xst8_ast_one);
dtheta_xst8_c_one = 1/(a_xst8_one*dtheta_xst8_ast_one);
for (int i = ilo; i <= ihi; i++) {
for (int j = MAX(jlo,i); j <= jhi; j++) {
k_xst[i][j] = k_xst_one;
cut_xst_0[i][j] = cut_xst_0_one;
cut_xst_c[i][j] = cut_xst_c_one;
cut_xst_lo[i][j] = cut_xst_lo_one;
cut_xst_hi[i][j] = cut_xst_hi_one;
cut_xst_lc[i][j] = cut_xst_lc_one;
cut_xst_hc[i][j] = cut_xst_hc_one;
b_xst_lo[i][j] = b_xst_lo_one;
b_xst_hi[i][j] = b_xst_hi_one;
a_xst1[i][j] = a_xst1_one;
theta_xst1_0[i][j] = theta_xst1_0_one;
dtheta_xst1_ast[i][j] = dtheta_xst1_ast_one;
b_xst1[i][j] = b_xst1_one;
dtheta_xst1_c[i][j] = dtheta_xst1_c_one;
a_xst2[i][j] = a_xst2_one;
theta_xst2_0[i][j] = theta_xst2_0_one;
dtheta_xst2_ast[i][j] = dtheta_xst2_ast_one;
b_xst2[i][j] = b_xst2_one;
dtheta_xst2_c[i][j] = dtheta_xst2_c_one;
a_xst3[i][j] = a_xst3_one;
theta_xst3_0[i][j] = theta_xst3_0_one;
dtheta_xst3_ast[i][j] = dtheta_xst3_ast_one;
b_xst3[i][j] = b_xst3_one;
dtheta_xst3_c[i][j] = dtheta_xst3_c_one;
a_xst4[i][j] = a_xst4_one;
theta_xst4_0[i][j] = theta_xst4_0_one;
dtheta_xst4_ast[i][j] = dtheta_xst4_ast_one;
b_xst4[i][j] = b_xst4_one;
dtheta_xst4_c[i][j] = dtheta_xst4_c_one;
a_xst7[i][j] = a_xst7_one;
theta_xst7_0[i][j] = theta_xst7_0_one;
dtheta_xst7_ast[i][j] = dtheta_xst7_ast_one;
b_xst7[i][j] = b_xst7_one;
dtheta_xst7_c[i][j] = dtheta_xst7_c_one;
a_xst8[i][j] = a_xst8_one;
theta_xst8_0[i][j] = theta_xst8_0_one;
dtheta_xst8_ast[i][j] = dtheta_xst8_ast_one;
b_xst8[i][j] = b_xst8_one;
dtheta_xst8_c[i][j] = dtheta_xst8_c_one;
setflag[i][j] = 1;
count++;
}
}
if (count == 0) error->all(FLERR,"Incorrect args for pair coefficients in oxdna/xstk");
}
/* ----------------------------------------------------------------------
init specific to this pair style
------------------------------------------------------------------------- */
void PairOxdnaXstk::init_style()
{
int irequest;
// request regular neighbor lists
irequest = neighbor->request(this,instance_me);
}
/* ----------------------------------------------------------------------
neighbor callback to inform pair style of neighbor list to use regular
------------------------------------------------------------------------- */
void PairOxdnaXstk::init_list(int id, NeighList *ptr)
{
if (id == 0) list = ptr;
if (id > 0) error->all(FLERR,"Respa not supported");
}
/* ----------------------------------------------------------------------
init for one type pair i,j and corresponding j,i
------------------------------------------------------------------------- */
double PairOxdnaXstk::init_one(int i, int j)
{
if (setflag[i][j] == 0) {
error->all(FLERR,"Coefficient mixing not defined in oxDNA");
}
if (offset_flag) {
error->all(FLERR,"Offset not supported in oxDNA");
}
k_xst[j][i] = k_xst[i][j];
cut_xst_0[j][i] = cut_xst_0[i][j];
cut_xst_c[j][i] = cut_xst_c[i][j];
cut_xst_lo[j][i] = cut_xst_lo[i][j];
cut_xst_hi[j][i] = cut_xst_hi[i][j];
b_xst_lo[j][i] = b_xst_lo[i][j];
b_xst_hi[j][i] = b_xst_hi[i][j];
cut_xst_lc[j][i] = cut_xst_lc[i][j];
cut_xst_hc[j][i] = cut_xst_hc[i][j];
a_xst1[j][i] = a_xst1[i][j];
theta_xst1_0[j][i] = theta_xst1_0[i][j];
dtheta_xst1_ast[j][i] = dtheta_xst1_ast[i][j];
b_xst1[j][i] = b_xst1[i][j];
dtheta_xst1_c[j][i] = dtheta_xst1_c[i][j];
a_xst2[j][i] = a_xst2[i][j];
theta_xst2_0[j][i] = theta_xst2_0[i][j];
dtheta_xst2_ast[j][i] = dtheta_xst2_ast[i][j];
b_xst2[j][i] = b_xst2[i][j];
dtheta_xst2_c[j][i] = dtheta_xst2_c[i][j];
a_xst3[j][i] = a_xst3[i][j];
theta_xst3_0[j][i] = theta_xst3_0[i][j];
dtheta_xst3_ast[j][i] = dtheta_xst3_ast[i][j];
b_xst3[j][i] = b_xst3[i][j];
dtheta_xst3_c[j][i] = dtheta_xst3_c[i][j];
a_xst4[j][i] = a_xst4[i][j];
theta_xst4_0[j][i] = theta_xst4_0[i][j];
dtheta_xst4_ast[j][i] = dtheta_xst4_ast[i][j];
b_xst4[j][i] = b_xst4[i][j];
dtheta_xst4_c[j][i] = dtheta_xst4_c[i][j];
a_xst7[j][i] = a_xst7[i][j];
theta_xst7_0[j][i] = theta_xst7_0[i][j];
dtheta_xst7_ast[j][i] = dtheta_xst7_ast[i][j];
b_xst7[j][i] = b_xst7[i][j];
dtheta_xst7_c[j][i] = dtheta_xst7_c[i][j];
a_xst8[j][i] = a_xst8[i][j];
theta_xst8_0[j][i] = theta_xst8_0[i][j];
dtheta_xst8_ast[j][i] = dtheta_xst8_ast[i][j];
b_xst8[j][i] = b_xst8[i][j];
dtheta_xst8_c[j][i] = dtheta_xst8_c[i][j];
cutsq_xst_hc[i][j] = cut_xst_hc[i][j]*cut_xst_hc[i][j];
cutsq_xst_hc[j][i] = cutsq_xst_hc[i][j];
// set the master list distance cutoff
return cut_xst_hc[i][j];
}
/* ----------------------------------------------------------------------
proc 0 writes to restart file
------------------------------------------------------------------------- */
void PairOxdnaXstk::write_restart(FILE *fp)
{
write_restart_settings(fp);
int i,j;
for (i = 1; i <= atom->ntypes; i++)
for (j = i; j <= atom->ntypes; j++) {
fwrite(&setflag[i][j],sizeof(int),1,fp);
if (setflag[i][j]) {
fwrite(&k_xst[i][j],sizeof(double),1,fp);
fwrite(&cut_xst_0[i][j],sizeof(double),1,fp);
fwrite(&cut_xst_c[i][j],sizeof(double),1,fp);
fwrite(&cut_xst_lo[i][j],sizeof(double),1,fp);
fwrite(&cut_xst_hi[i][j],sizeof(double),1,fp);
fwrite(&cut_xst_lc[i][j],sizeof(double),1,fp);
fwrite(&cut_xst_hc[i][j],sizeof(double),1,fp);
fwrite(&b_xst_lo[i][j],sizeof(double),1,fp);
fwrite(&b_xst_hi[i][j],sizeof(double),1,fp);
fwrite(&a_xst1[i][j],sizeof(double),1,fp);
fwrite(&theta_xst1_0[i][j],sizeof(double),1,fp);
fwrite(&dtheta_xst1_ast[i][j],sizeof(double),1,fp);
fwrite(&b_xst1[i][j],sizeof(double),1,fp);
fwrite(&dtheta_xst1_c[i][j],sizeof(double),1,fp);
fwrite(&a_xst2[i][j],sizeof(double),1,fp);
fwrite(&theta_xst2_0[i][j],sizeof(double),1,fp);
fwrite(&dtheta_xst2_ast[i][j],sizeof(double),1,fp);
fwrite(&b_xst2[i][j],sizeof(double),1,fp);
fwrite(&dtheta_xst2_c[i][j],sizeof(double),1,fp);
fwrite(&a_xst3[i][j],sizeof(double),1,fp);
fwrite(&theta_xst3_0[i][j],sizeof(double),1,fp);
fwrite(&dtheta_xst3_ast[i][j],sizeof(double),1,fp);
fwrite(&b_xst3[i][j],sizeof(double),1,fp);
fwrite(&dtheta_xst3_c[i][j],sizeof(double),1,fp);
fwrite(&a_xst4[i][j],sizeof(double),1,fp);
fwrite(&theta_xst4_0[i][j],sizeof(double),1,fp);
fwrite(&dtheta_xst4_ast[i][j],sizeof(double),1,fp);
fwrite(&b_xst4[i][j],sizeof(double),1,fp);
fwrite(&dtheta_xst4_c[i][j],sizeof(double),1,fp);
fwrite(&a_xst7[i][j],sizeof(double),1,fp);
fwrite(&theta_xst7_0[i][j],sizeof(double),1,fp);
fwrite(&dtheta_xst7_ast[i][j],sizeof(double),1,fp);
fwrite(&b_xst7[i][j],sizeof(double),1,fp);
fwrite(&dtheta_xst7_c[i][j],sizeof(double),1,fp);
fwrite(&a_xst8[i][j],sizeof(double),1,fp);
fwrite(&theta_xst8_0[i][j],sizeof(double),1,fp);
fwrite(&dtheta_xst8_ast[i][j],sizeof(double),1,fp);
fwrite(&b_xst8[i][j],sizeof(double),1,fp);
fwrite(&dtheta_xst8_c[i][j],sizeof(double),1,fp);
}
}
}
/* ----------------------------------------------------------------------
proc 0 reads from restart file, bcasts
------------------------------------------------------------------------- */
void PairOxdnaXstk::read_restart(FILE *fp)
{
read_restart_settings(fp);
allocate();
int i,j;
int me = comm->me;
for (i = 1; i <= atom->ntypes; i++)
for (j = i; j <= atom->ntypes; j++) {
if (me == 0) fread(&setflag[i][j],sizeof(int),1,fp);
MPI_Bcast(&setflag[i][j],1,MPI_INT,0,world);
if (setflag[i][j]) {
if (me == 0) {
fread(&k_xst[i][j],sizeof(double),1,fp);
fread(&cut_xst_0[i][j],sizeof(double),1,fp);
fread(&cut_xst_c[i][j],sizeof(double),1,fp);
fread(&cut_xst_lo[i][j],sizeof(double),1,fp);
fread(&cut_xst_hi[i][j],sizeof(double),1,fp);
fread(&cut_xst_lc[i][j],sizeof(double),1,fp);
fread(&cut_xst_hc[i][j],sizeof(double),1,fp);
fread(&b_xst_lo[i][j],sizeof(double),1,fp);
fread(&b_xst_hi[i][j],sizeof(double),1,fp);
fread(&a_xst1[i][j],sizeof(double),1,fp);
fread(&theta_xst1_0[i][j],sizeof(double),1,fp);
fread(&dtheta_xst1_ast[i][j],sizeof(double),1,fp);
fread(&b_xst1[i][j],sizeof(double),1,fp);
fread(&dtheta_xst1_c[i][j],sizeof(double),1,fp);
fread(&a_xst2[i][j],sizeof(double),1,fp);
fread(&theta_xst2_0[i][j],sizeof(double),1,fp);
fread(&dtheta_xst2_ast[i][j],sizeof(double),1,fp);
fread(&b_xst2[i][j],sizeof(double),1,fp);
fread(&dtheta_xst2_c[i][j],sizeof(double),1,fp);
fread(&a_xst3[i][j],sizeof(double),1,fp);
fread(&theta_xst3_0[i][j],sizeof(double),1,fp);
fread(&dtheta_xst3_ast[i][j],sizeof(double),1,fp);
fread(&b_xst3[i][j],sizeof(double),1,fp);
fread(&dtheta_xst3_c[i][j],sizeof(double),1,fp);
fread(&a_xst4[i][j],sizeof(double),1,fp);
fread(&theta_xst4_0[i][j],sizeof(double),1,fp);
fread(&dtheta_xst4_ast[i][j],sizeof(double),1,fp);
fread(&b_xst4[i][j],sizeof(double),1,fp);
fread(&dtheta_xst4_c[i][j],sizeof(double),1,fp);
fread(&a_xst7[i][j],sizeof(double),1,fp);
fread(&theta_xst7_0[i][j],sizeof(double),1,fp);
fread(&dtheta_xst7_ast[i][j],sizeof(double),1,fp);
fread(&b_xst7[i][j],sizeof(double),1,fp);
fread(&dtheta_xst7_c[i][j],sizeof(double),1,fp);
fread(&a_xst8[i][j],sizeof(double),1,fp);
fread(&theta_xst8_0[i][j],sizeof(double),1,fp);
fread(&dtheta_xst8_ast[i][j],sizeof(double),1,fp);
fread(&b_xst8[i][j],sizeof(double),1,fp);
fread(&dtheta_xst8_c[i][j],sizeof(double),1,fp);
}
MPI_Bcast(&k_xst[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&cut_xst_0[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&cut_xst_c[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&cut_xst_lo[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&cut_xst_hi[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&cut_xst_lc[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&cut_xst_hc[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&b_xst_lo[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&b_xst_hi[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&a_xst1[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&theta_xst1_0[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&dtheta_xst1_ast[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&b_xst1[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&dtheta_xst1_c[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&a_xst2[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&theta_xst2_0[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&dtheta_xst2_ast[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&b_xst2[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&dtheta_xst2_c[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&a_xst3[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&theta_xst3_0[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&dtheta_xst3_ast[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&b_xst3[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&dtheta_xst3_c[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&a_xst4[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&theta_xst4_0[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&dtheta_xst4_ast[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&b_xst4[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&dtheta_xst4_c[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&a_xst7[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&theta_xst7_0[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&dtheta_xst7_ast[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&b_xst7[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&dtheta_xst7_c[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&a_xst8[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&theta_xst8_0[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&dtheta_xst8_ast[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&b_xst8[i][j],1,MPI_DOUBLE,0,world);
MPI_Bcast(&dtheta_xst8_c[i][j],1,MPI_DOUBLE,0,world);
}
}
}
/* ----------------------------------------------------------------------
proc 0 writes to restart file
------------------------------------------------------------------------- */
void PairOxdnaXstk::write_restart_settings(FILE *fp)
{
fwrite(&offset_flag,sizeof(int),1,fp);
fwrite(&mix_flag,sizeof(int),1,fp);
fwrite(&tail_flag,sizeof(int),1,fp);
}
/* ----------------------------------------------------------------------
proc 0 reads from restart file, bcasts
------------------------------------------------------------------------- */
void PairOxdnaXstk::read_restart_settings(FILE *fp)
{
int me = comm->me;
if (me == 0) {
fread(&offset_flag,sizeof(int),1,fp);
fread(&mix_flag,sizeof(int),1,fp);
fread(&tail_flag,sizeof(int),1,fp);
}
MPI_Bcast(&offset_flag,1,MPI_INT,0,world);
MPI_Bcast(&mix_flag,1,MPI_INT,0,world);
MPI_Bcast(&tail_flag,1,MPI_INT,0,world);
}
/* ----------------------------------------------------------------------
proc 0 writes to data file
------------------------------------------------------------------------- */
void PairOxdnaXstk::write_data(FILE *fp)
{
for (int i = 1; i <= atom->ntypes; i++)
fprintf(fp,"%d\
%g %g %g %g %g\
%g %g %g %g\
%g %g %g %g %g\
%g %g %g %g %g\
%g %g %g %g %g\
%g %g %g %g %g\
%g %g %g %g %g\
%g %g %g %g %g\
\n",i,
k_xst[i][i],cut_xst_0[i][i],cut_xst_c[i][i],cut_xst_lo[i][i],cut_xst_hi[i][i],
cut_xst_lc[i][i],cut_xst_hc[i][i],b_xst_lo[i][i],b_xst_hi[i][i],
a_xst1[i][i],theta_xst1_0[i][i],dtheta_xst1_ast[i][i],b_xst1[i][i],dtheta_xst1_c[i][i],
a_xst2[i][i],theta_xst2_0[i][i],dtheta_xst2_ast[i][i],b_xst2[i][i],dtheta_xst2_c[i][i],
a_xst3[i][i],theta_xst3_0[i][i],dtheta_xst3_ast[i][i],b_xst3[i][i],dtheta_xst3_c[i][i],
a_xst4[i][i],theta_xst4_0[i][i],dtheta_xst4_ast[i][i],b_xst4[i][i],dtheta_xst4_c[i][i],
a_xst7[i][i],theta_xst7_0[i][i],dtheta_xst7_ast[i][i],b_xst7[i][i],dtheta_xst7_c[i][i],
a_xst8[i][i],theta_xst8_0[i][i],dtheta_xst8_ast[i][i],b_xst8[i][i],dtheta_xst8_c[i][i]);
}
/* ----------------------------------------------------------------------
proc 0 writes all pairs to data file
------------------------------------------------------------------------- */
void PairOxdnaXstk::write_data_all(FILE *fp)
{
for (int i = 1; i <= atom->ntypes; i++)
for (int j = i; j <= atom->ntypes; j++)
fprintf(fp,"%d %d\
%g %g %g %g %g\
%g %g %g %g\
%g %g %g %g %g\
%g %g %g %g %g\
%g %g %g %g %g\
%g %g %g %g %g\
%g %g %g %g %g\
%g %g %g %g %g\
\n",i,j,
k_xst[i][j],cut_xst_0[i][j],cut_xst_c[i][j],cut_xst_lo[i][j],cut_xst_hi[i][j],
cut_xst_lc[i][j],cut_xst_hc[i][j],b_xst_lo[i][j],b_xst_hi[i][j],
a_xst1[i][j],theta_xst1_0[i][j],dtheta_xst1_ast[i][j],b_xst1[i][j],dtheta_xst1_c[i][j],
a_xst2[i][j],theta_xst2_0[i][j],dtheta_xst2_ast[i][j],b_xst2[i][j],dtheta_xst2_c[i][j],
a_xst3[i][j],theta_xst3_0[i][j],dtheta_xst3_ast[i][j],b_xst3[i][j],dtheta_xst3_c[i][j],
a_xst4[i][j],theta_xst4_0[i][j],dtheta_xst4_ast[i][j],b_xst4[i][j],dtheta_xst4_c[i][j],
a_xst7[i][j],theta_xst7_0[i][j],dtheta_xst7_ast[i][j],b_xst7[i][j],dtheta_xst7_c[i][j],
a_xst8[i][j],theta_xst8_0[i][j],dtheta_xst8_ast[i][j],b_xst8[i][j],dtheta_xst8_c[i][j]);
}
/* ---------------------------------------------------------------------- */
void *PairOxdnaXstk::extract(const char *str, int &dim)
{
dim = 2;
if (strcmp(str,"k_xst") == 0) return (void *) k_xst;
if (strcmp(str,"cut_xst_0") == 0) return (void *) cut_xst_0;
if (strcmp(str,"cut_xst_c") == 0) return (void *) cut_xst_c;
if (strcmp(str,"cut_xst_lo") == 0) return (void *) cut_xst_lo;
if (strcmp(str,"cut_xst_hi") == 0) return (void *) cut_xst_hi;
if (strcmp(str,"cut_xst_lc") == 0) return (void *) cut_xst_lc;
if (strcmp(str,"cut_xst_hc") == 0) return (void *) cut_xst_hc;
if (strcmp(str,"b_xst_lo") == 0) return (void *) b_xst_lo;
if (strcmp(str,"b_xst_hi") == 0) return (void *) b_xst_hi;
if (strcmp(str,"a_xst1") == 0) return (void *) a_xst1;
if (strcmp(str,"theta_xst1_0") == 0) return (void *) theta_xst1_0;
if (strcmp(str,"dtheta_xst1_ast") == 0) return (void *) dtheta_xst1_ast;
if (strcmp(str,"b_xst1") == 0) return (void *) b_xst1;
if (strcmp(str,"dtheta_xst1_c") == 0) return (void *) dtheta_xst1_c;
if (strcmp(str,"a_xst2") == 0) return (void *) a_xst2;
if (strcmp(str,"theta_xst2_0") == 0) return (void *) theta_xst2_0;
if (strcmp(str,"dtheta_xst2_ast") == 0) return (void *) dtheta_xst2_ast;
if (strcmp(str,"b_xst2") == 0) return (void *) b_xst2;
if (strcmp(str,"dtheta_xst2_c") == 0) return (void *) dtheta_xst2_c;
if (strcmp(str,"a_xst3") == 0) return (void *) a_xst3;
if (strcmp(str,"theta_xst3_0") == 0) return (void *) theta_xst3_0;
if (strcmp(str,"dtheta_xst3_ast") == 0) return (void *) dtheta_xst3_ast;
if (strcmp(str,"b_xst3") == 0) return (void *) b_xst3;
if (strcmp(str,"dtheta_xst3_c") == 0) return (void *) dtheta_xst3_c;
if (strcmp(str,"a_xst4") == 0) return (void *) a_xst4;
if (strcmp(str,"theta_xst4_0") == 0) return (void *) theta_xst4_0;
if (strcmp(str,"dtheta_xst4_ast") == 0) return (void *) dtheta_xst4_ast;
if (strcmp(str,"b_xst4") == 0) return (void *) b_xst4;
if (strcmp(str,"dtheta_xst4_c") == 0) return (void *) dtheta_xst4_c;
if (strcmp(str,"a_xst7") == 0) return (void *) a_xst7;
if (strcmp(str,"theta_xst7_0") == 0) return (void *) theta_xst7_0;
if (strcmp(str,"dtheta_xst7_ast") == 0) return (void *) dtheta_xst7_ast;
if (strcmp(str,"b_xst7") == 0) return (void *) b_xst7;
if (strcmp(str,"dtheta_xst7_c") == 0) return (void *) dtheta_xst7_c;
if (strcmp(str,"a_xst8") == 0) return (void *) a_xst8;
if (strcmp(str,"theta_xst8_0") == 0) return (void *) theta_xst8_0;
if (strcmp(str,"dtheta_xst8_ast") == 0) return (void *) dtheta_xst8_ast;
if (strcmp(str,"b_xst8") == 0) return (void *) b_xst8;
if (strcmp(str,"dtheta_xst8_c") == 0) return (void *) dtheta_xst8_c;
return NULL;
}

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