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fix_ave_correlate_long.h
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rLAMMPS lammps
fix_ave_correlate_long.h
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/* -*- c++ -*- ----------------------------------------------------------
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.
------------------------------------------------------------------------- */
#ifdef FIX_CLASS
FixStyle
(
ave
/
correlate
/
long
,
FixAveCorrelateLong
)
#else
#ifndef LMP_FIX_AVE_CORRELATE_LONG_H
#define LMP_FIX_AVE_CORRELATE_LONG_H
#include <stdio.h>
#include "fix.h"
namespace
LAMMPS_NS
{
class
FixAveCorrelateLong
:
public
Fix
{
public:
FixAveCorrelateLong
(
class
LAMMPS
*
,
int
,
char
**
);
~
FixAveCorrelateLong
();
int
setmask
();
void
init
();
void
setup
(
int
);
void
end_of_step
();
void
write_restart
(
FILE
*
);
void
restart
(
char
*
);
double
memory_usage
();
double
*
t
;
// Time steps for result arrays
double
**
f
;
// Result arrays
unsigned
int
npcorr
;
private:
// NOT OPTIMAL: shift2 and accumulator2 only needed in cross-correlations
double
***
shift
,
***
shift2
;
double
***
correlation
;
double
**
accumulator
,
**
accumulator2
;
unsigned
long
int
**
ncorrelation
;
unsigned
int
*
naccumulator
;
unsigned
int
*
insertindex
;
unsigned
int
numcorrelators
;
// Recommended 20
unsigned
int
p
;
// Points per correlator (recommended 16)
unsigned
int
m
;
// Num points for average (recommended 2; p mod m = 0)
unsigned
int
dmin
;
// Min distance between ponts for correlators k>0; dmin=p/m
unsigned
int
length
;
// Length of result arrays
unsigned
int
kmax
;
// Maximum correlator attained during simulation
int
me
,
nvalues
;
int
nfreq
;
bigint
nvalid
,
nvalid_last
;
int
*
which
,
*
argindex
,
*
value2index
;
char
**
ids
;
FILE
*
fp
;
int
type
,
startstep
,
overwrite
;
long
filepos
;
int
npair
;
// number of correlation pairs to calculate
double
*
values
;
void
accumulate
();
void
evaluate
();
bigint
nextvalid
();
void
add
(
const
int
i
,
const
double
w
,
const
unsigned
int
k
=
0
);
void
add
(
const
int
i
,
const
double
wA
,
const
double
wB
,
const
unsigned
int
k
=
0
);
};
}
#endif
#endif
/* ERROR/WARNING messages:
E: Illegal ... command
Self-explanatory. Check the input script syntax and compare to the
documentation for the command. You can use -echo screen as a
command-line option when running LAMMPS to see the offending line.
E: Cannot open fix ave/correlate/long file %s
The specified file cannot be opened. Check that the path and name are
correct.
E: Compute ID for fix ave/correlate/long does not exist
Self-explanatory.
E: Fix ave/correlate/long compute does not calculate a scalar
Self-explanatory.
E: Fix ave/correlate/long compute does not calculate a vector
Self-explanatory.
E: Fix ave/correlate/long compute vector is accessed out-of-range
The index for the vector is out of bounds.
E: Fix ID for fix ave/correlate/long does not exist
Self-explanatory.
E: Fix ave/correlate/long fix does not calculate a scalar
Self-explanatory.
E: Fix ave/correlate/long fix does not calculate a vector
Self-explanatory.
E: Fix ave/correlate/long fix vector is accessed out-of-range
The index for the vector is out of bounds.
E: Fix for fix ave/correlate/long not computed at compatible time
Fixes generate their values on specific timesteps. Fix ave/correlate/long
is requesting a value on a non-allowed timestep.
E: Variable name for fix ave/correlate/long does not exist
Self-explanatory.
E: Fix ave/correlate/long variable is not equal-style variable
Self-explanatory.
E: Invalid timestep reset for fix ave/correlate/long
Resetting the timestep has invalidated the sequence of timesteps this
fix needs to process.
*/
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