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fix_rigid_nvt_small.cpp
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Sat, Jun 29, 05:00

fix_rigid_nvt_small.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: Trung Dac Nguyen (ORNL)
references: Kamberaj et al., J. Chem. Phys. 122, 224114 (2005)
Miller et al., J Chem Phys. 116, 8649-8659 (2002)
------------------------------------------------------------------------- */
#include "fix_rigid_nvt_small.h"
#include "error.h"
using namespace LAMMPS_NS;
/* ---------------------------------------------------------------------- */
FixRigidNVTSmall::FixRigidNVTSmall(LAMMPS *lmp, int narg, char **arg) :
FixRigidNHSmall(lmp, narg, arg)
{
// other settings are made by parent
scalar_flag = 1;
restart_global = 1;
extscalar = 1;
// error checking
// convert input period to frequency
if (tstat_flag == 0)
error->all(FLERR,"Did not set temp for fix rigid/nvt/small");
if (t_start < 0.0 || t_stop <= 0.0)
error->all(FLERR,"Target temperature for fix rigid/nvt/small cannot be 0.0");
if (t_period <= 0.0) error->all(FLERR,"Fix rigid/nvt/small period must be > 0.0");
t_freq = 1.0 / t_period;
if (t_chain < 1) error->all(FLERR,"Fix rigid nvt/small t_chain should not be less than 1");
if (t_iter < 1) error->all(FLERR,"Fix rigid nvt/small t_iter should not be less than 1");
if (t_order != 3 && t_order != 5)
error->all(FLERR,"Fix rigid nvt/small t_order must be 3 or 5");
}

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