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manifold_ellipsoid.cpp
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Created
Fri, Aug 30, 16:25
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666 B
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text/x-c
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Sun, Sep 1, 16:25 (2 d)
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blob
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20226825
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rLAMMPS lammps
manifold_ellipsoid.cpp
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#include "manifold_ellipsoid.h"
using
namespace
LAMMPS_NS
;
using
namespace
user_manifold
;
manifold_ellipsoid
::
manifold_ellipsoid
(
LAMMPS
*
lmp
,
int
narg
,
char
**
argv
)
:
manifold
(
lmp
)
{}
double
manifold_ellipsoid
::
g
(
const
double
*
x
)
{
const
double
ai
=
1.0
/
params
[
0
];
const
double
bi
=
1.0
/
params
[
1
];
const
double
ci
=
1.0
/
params
[
2
];
return
x
[
0
]
*
x
[
0
]
*
ai
*
ai
+
x
[
1
]
*
x
[
1
]
*
bi
*
bi
+
x
[
2
]
*
x
[
2
]
*
ci
*
ci
-
1.0
;
}
void
manifold_ellipsoid
::
n
(
const
double
*
x
,
double
*
n
)
{
const
double
ai
=
1.0
/
params
[
0
];
const
double
bi
=
1.0
/
params
[
1
];
const
double
ci
=
1.0
/
params
[
2
];
n
[
0
]
=
2
*
x
[
0
]
*
ai
*
ai
;
n
[
1
]
=
2
*
x
[
1
]
*
bi
*
bi
;
n
[
2
]
=
2
*
x
[
2
]
*
ci
*
ci
;
}
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