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atom_atomic.cpp
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Thu, Aug 1, 15:53
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Sat, Aug 3, 15:53 (2 d)
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rLAMMPS lammps
atom_atomic.cpp
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/* ----------------------------------------------------------------------
LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
www.cs.sandia.gov/~sjplimp/lammps.html
Steve Plimpton, sjplimp@sandia.gov, Sandia National Laboratories
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.
------------------------------------------------------------------------- */
#include "atom_atomic.h"
#include "domain.h"
#include "modify.h"
#include "fix.h"
/* ---------------------------------------------------------------------- */
AtomAtomic
::
AtomAtomic
(
int
narg
,
char
**
arg
)
:
Atom
(
narg
,
arg
)
{}
/* ---------------------------------------------------------------------- */
void
AtomAtomic
::
copy
(
int
i
,
int
j
)
{
tag
[
j
]
=
tag
[
i
];
type
[
j
]
=
type
[
i
];
mask
[
j
]
=
mask
[
i
];
image
[
j
]
=
image
[
i
];
x
[
j
][
0
]
=
x
[
i
][
0
];
x
[
j
][
1
]
=
x
[
i
][
1
];
x
[
j
][
2
]
=
x
[
i
][
2
];
v
[
j
][
0
]
=
v
[
i
][
0
];
v
[
j
][
1
]
=
v
[
i
][
1
];
v
[
j
][
2
]
=
v
[
i
][
2
];
if
(
nextra_grow
)
for
(
int
iextra
=
0
;
iextra
<
nextra_grow
;
iextra
++
)
modify
->
fix
[
extra_grow
[
iextra
]]
->
copy_arrays
(
i
,
j
);
}
/* ---------------------------------------------------------------------- */
void
AtomAtomic
::
pack_comm
(
int
n
,
int
*
list
,
double
*
buf
,
int
*
pbc_flags
)
{
int
i
,
j
,
m
;
m
=
0
;
if
(
pbc_flags
[
0
]
==
0
)
{
for
(
i
=
0
;
i
<
n
;
i
++
)
{
j
=
list
[
i
];
buf
[
m
++
]
=
x
[
j
][
0
];
buf
[
m
++
]
=
x
[
j
][
1
];
buf
[
m
++
]
=
x
[
j
][
2
];
}
}
else
{
double
xprd
=
domain
->
xprd
;
double
yprd
=
domain
->
yprd
;
double
zprd
=
domain
->
zprd
;
for
(
i
=
0
;
i
<
n
;
i
++
)
{
j
=
list
[
i
];
buf
[
m
++
]
=
x
[
j
][
0
]
+
pbc_flags
[
1
]
*
xprd
;
buf
[
m
++
]
=
x
[
j
][
1
]
+
pbc_flags
[
2
]
*
yprd
;
buf
[
m
++
]
=
x
[
j
][
2
]
+
pbc_flags
[
3
]
*
zprd
;
}
}
}
/* ---------------------------------------------------------------------- */
void
AtomAtomic
::
unpack_comm
(
int
n
,
int
first
,
double
*
buf
)
{
int
i
,
m
,
last
;
m
=
0
;
last
=
first
+
n
;
for
(
i
=
first
;
i
<
last
;
i
++
)
{
x
[
i
][
0
]
=
buf
[
m
++
];
x
[
i
][
1
]
=
buf
[
m
++
];
x
[
i
][
2
]
=
buf
[
m
++
];
}
}
/* ---------------------------------------------------------------------- */
void
AtomAtomic
::
pack_reverse
(
int
n
,
int
first
,
double
*
buf
)
{
int
i
,
m
,
last
;
m
=
0
;
last
=
first
+
n
;
for
(
i
=
first
;
i
<
last
;
i
++
)
{
buf
[
m
++
]
=
f
[
i
][
0
];
buf
[
m
++
]
=
f
[
i
][
1
];
buf
[
m
++
]
=
f
[
i
][
2
];
}
}
/* ---------------------------------------------------------------------- */
void
AtomAtomic
::
unpack_reverse
(
int
n
,
int
*
list
,
double
*
buf
)
{
int
i
,
j
,
m
;
m
=
0
;
for
(
i
=
0
;
i
<
n
;
i
++
)
{
j
=
list
[
i
];
f
[
j
][
0
]
+=
buf
[
m
++
];
f
[
j
][
1
]
+=
buf
[
m
++
];
f
[
j
][
2
]
+=
buf
[
m
++
];
}
}
/* ---------------------------------------------------------------------- */
void
AtomAtomic
::
pack_border
(
int
n
,
int
*
list
,
double
*
buf
,
int
*
pbc_flags
)
{
int
i
,
j
,
m
;
m
=
0
;
if
(
pbc_flags
[
0
]
==
0
)
{
for
(
i
=
0
;
i
<
n
;
i
++
)
{
j
=
list
[
i
];
buf
[
m
++
]
=
x
[
j
][
0
];
buf
[
m
++
]
=
x
[
j
][
1
];
buf
[
m
++
]
=
x
[
j
][
2
];
buf
[
m
++
]
=
tag
[
j
];
buf
[
m
++
]
=
type
[
j
];
buf
[
m
++
]
=
mask
[
j
];
}
}
else
{
double
xprd
=
domain
->
xprd
;
double
yprd
=
domain
->
yprd
;
double
zprd
=
domain
->
zprd
;
for
(
i
=
0
;
i
<
n
;
i
++
)
{
j
=
list
[
i
];
buf
[
m
++
]
=
x
[
j
][
0
]
+
pbc_flags
[
1
]
*
xprd
;
buf
[
m
++
]
=
x
[
j
][
1
]
+
pbc_flags
[
2
]
*
yprd
;
buf
[
m
++
]
=
x
[
j
][
2
]
+
pbc_flags
[
3
]
*
zprd
;
buf
[
m
++
]
=
tag
[
j
];
buf
[
m
++
]
=
type
[
j
];
buf
[
m
++
]
=
mask
[
j
];
}
}
}
/* ---------------------------------------------------------------------- */
void
AtomAtomic
::
unpack_border
(
int
n
,
int
first
,
double
*
buf
)
{
int
i
,
m
,
last
;
m
=
0
;
last
=
first
+
n
;
for
(
i
=
first
;
i
<
last
;
i
++
)
{
if
(
i
==
nmax
)
grow
(
0
);
x
[
i
][
0
]
=
buf
[
m
++
];
x
[
i
][
1
]
=
buf
[
m
++
];
x
[
i
][
2
]
=
buf
[
m
++
];
tag
[
i
]
=
static_cast
<
int
>
(
buf
[
m
++
]);
type
[
i
]
=
static_cast
<
int
>
(
buf
[
m
++
]);
mask
[
i
]
=
static_cast
<
int
>
(
buf
[
m
++
]);
}
}
/* ----------------------------------------------------------------------
pack all atom quantities for shipping to another proc
xyz must be 1st 3 values, so that comm::exchange can test on them
------------------------------------------------------------------------- */
int
AtomAtomic
::
pack_exchange
(
int
i
,
double
*
buf
)
{
int
m
=
1
;
buf
[
m
++
]
=
x
[
i
][
0
];
buf
[
m
++
]
=
x
[
i
][
1
];
buf
[
m
++
]
=
x
[
i
][
2
];
buf
[
m
++
]
=
v
[
i
][
0
];
buf
[
m
++
]
=
v
[
i
][
1
];
buf
[
m
++
]
=
v
[
i
][
2
];
buf
[
m
++
]
=
tag
[
i
];
buf
[
m
++
]
=
type
[
i
];
buf
[
m
++
]
=
mask
[
i
];
buf
[
m
++
]
=
image
[
i
];
if
(
nextra_grow
)
for
(
int
iextra
=
0
;
iextra
<
nextra_grow
;
iextra
++
)
m
+=
modify
->
fix
[
extra_grow
[
iextra
]]
->
pack_exchange
(
i
,
&
buf
[
m
]);
buf
[
0
]
=
m
;
return
m
;
}
/* ---------------------------------------------------------------------- */
int
AtomAtomic
::
unpack_exchange
(
double
*
buf
)
{
if
(
nlocal
==
nmax
)
grow
(
0
);
int
m
=
1
;
x
[
nlocal
][
0
]
=
buf
[
m
++
];
x
[
nlocal
][
1
]
=
buf
[
m
++
];
x
[
nlocal
][
2
]
=
buf
[
m
++
];
v
[
nlocal
][
0
]
=
buf
[
m
++
];
v
[
nlocal
][
1
]
=
buf
[
m
++
];
v
[
nlocal
][
2
]
=
buf
[
m
++
];
tag
[
nlocal
]
=
static_cast
<
int
>
(
buf
[
m
++
]);
type
[
nlocal
]
=
static_cast
<
int
>
(
buf
[
m
++
]);
mask
[
nlocal
]
=
static_cast
<
int
>
(
buf
[
m
++
]);
image
[
nlocal
]
=
static_cast
<
int
>
(
buf
[
m
++
]);
if
(
nextra_grow
)
for
(
int
iextra
=
0
;
iextra
<
nextra_grow
;
iextra
++
)
m
+=
modify
->
fix
[
extra_grow
[
iextra
]]
->
unpack_exchange
(
nlocal
,
&
buf
[
m
]);
nlocal
++
;
return
m
;
}
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