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#include <iostream> | 
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#include <cstdlib> | 
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#include <cmath> | 
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#include <stdlib.h> | 
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#include <math.h> | 
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#ifdef IS_MPI | 
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#include "mpiSimulation.hpp" | 
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  if (info->the_integrator != NULL){ | 
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    delete info->the_integrator; | 
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  } | 
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  info->the_integrator = this; | 
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  nAtoms = info->n_atoms; | 
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template<typename T> void Integrator<T>::integrate(void){ | 
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  int i, j;                         // loop counters | 
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  double runTime = info->run_time; | 
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  double sampleTime = info->sampleTime; | 
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  double currThermal; | 
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  double currStatus; | 
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  double currReset; | 
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  int calcPot, calcStress; | 
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  int isError; | 
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  tStats = new Thermo(info); | 
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  statOut = new StatWriter(info); | 
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  dumpOut = new DumpWriter(info); | 
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  atoms = info->atoms; | 
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  DirectionalAtom* dAtom; | 
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  dt = info->dt; | 
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  dt2 = 0.5 * dt; | 
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  readyCheck(); | 
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  // initialize the forces before the first step | 
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  calcForce(1, 1); | 
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  if (nConstrained){ | 
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    preMove(); | 
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    constrainA(); | 
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    calcForce(1, 1);     | 
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    calcForce(1, 1); | 
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    constrainB(); | 
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  } | 
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  if (info->setTemp){ | 
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    thermalize(); | 
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  } | 
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  dumpOut->writeDump(info->getTime()); | 
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  statOut->writeStat(info->getTime()); | 
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  readyCheck(); | 
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#ifdef IS_MPI | 
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  strcpy(checkPointMsg, "The integrator is ready to go."); | 
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  MPIcheckPoint(); | 
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    } | 
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    if (info->getTime() >= currStatus){ | 
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      statOut->writeStat(info->getTime());  | 
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      calcPot = 0;  | 
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      statOut->writeStat(info->getTime()); | 
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      calcPot = 0; | 
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      calcStress = 0; | 
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      currStatus += statusTime; | 
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    }  | 
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    } | 
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    if (info->resetIntegrator){ | 
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      if (info->getTime() >= currReset){ | 
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#endif // is_mpi | 
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  } | 
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  dumpOut->writeFinal(info->getTime()); | 
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  // write the last frame | 
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  dumpOut->writeDump(info->getTime()); | 
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  delete dumpOut; | 
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  delete statOut; | 
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    if (atoms[i]->isDirectional()){ | 
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      dAtom = (DirectionalAtom *) atoms[i]; | 
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      // get and convert the torque to body frame       | 
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      // get and convert the torque to body frame | 
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      dAtom->getTrq(Tb); | 
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      dAtom->lab2Body(Tb); | 
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} | 
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template<typename T> void Integrator<T>::constrainA(){ | 
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  int i, j, k; | 
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  int i, j; | 
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  int done; | 
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  double posA[3], posB[3]; | 
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  double velA[3], velB[3]; | 
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} | 
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template<typename T> void Integrator<T>::constrainB(void){ | 
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  int i, j, k; | 
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  int i, j; | 
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  int done; | 
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  double posA[3], posB[3]; | 
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  double velA[3], velB[3]; | 
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  int a, b, ax, ay, az, bx, by, bz; | 
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  double rma, rmb; | 
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  double dx, dy, dz; | 
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  double rabsq, pabsq, rvab; | 
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  double diffsq; | 
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  double rvab; | 
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  double gab; | 
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  int iteration; | 
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  dAtom->getA(A); | 
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  dAtom->getI(I); | 
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  // rotate about the x-axis       | 
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  // rotate about the x-axis | 
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  angle = dt2 * ji[0] / I[0][0]; | 
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  this->rotate( 1, 2, angle, ji, A );  | 
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  this->rotate( 1, 2, angle, ji, A ); | 
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  // rotate about the y-axis | 
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  angle = dt2 * ji[1] / I[1][1]; | 
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  this->rotate( 2, 0, angle, ji, A ); | 
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  // rotate about the z-axis | 
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  angle = dt * ji[2] / I[2][2]; | 
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  this->rotate( 0, 1, angle, ji, A); | 
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  // rotate about the y-axis | 
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  angle = dt2 * ji[1] / I[1][1]; | 
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  this->rotate( 2, 0, angle, ji, A ); | 
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  // rotate about the x-axis | 
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  angle = dt2 * ji[0] / I[0][0]; | 
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  this->rotate( 1, 2, angle, ji, A ); | 
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  dAtom->setA( A  );     | 
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  dAtom->setA( A  ); | 
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} | 
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template<typename T> void Integrator<T>::rotate(int axes1, int axes2, | 
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    } | 
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  } | 
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  // rotate the Rotation matrix acording to:  | 
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  // rotate the Rotation matrix acording to: | 
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  //            A[][] = A[][] * transpose(rot[][]) | 
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template<typename T> double Integrator<T>::getConservedQuantity(void){ | 
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  return tStats->getTotalE(); | 
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} | 
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template<typename T> string Integrator<T>::getAdditionalParameters(void){ | 
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  //By default, return a null string | 
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  //The reason we use string instead of char* is that if we use char*, we will | 
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  //return a pointer point to local variable which might cause problem | 
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  return string(); | 
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} |