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SWIFT
QuickSched
Commits
f8d4ff50
Commit
f8d4ff50
authored
10 years ago
by
Matthieu Schaller
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Removed the deprecated double precision version of the routines.
parent
2343abe3
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examples/test_fmm.c
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-154
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examples/test_fmm.c
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f8d4ff50
...
...
@@ -629,81 +629,6 @@ static inline void iact_self_pc(struct cell *c, struct cell *leaf,
}
}
/**
* @brief Compute the interactions between all particles in a cell
* and all particles in the other cell (N^2 algorithm)
*
* @param ci The #cell containing the particles.
* @param cj The #cell containing the other particles
*/
static
inline
void
iact_pair_direct_dp
(
struct
cell
*
ci
,
struct
cell
*
cj
)
{
int
i
,
j
,
k
;
int
count_i
=
ci
->
count
,
count_j
=
cj
->
count
;
double
xi
[
3
];
float
dx
[
3
],
ai
[
3
],
mi
,
mj
,
r2
,
w
,
ir
;
struct
part
*
parts_i
=
ci
->
parts
,
*
parts_j
=
cj
->
parts
;
#ifdef SANITY_CHECKS
/* Bad stuff will happen if cell sizes are different */
if
(
ci
->
h
!=
cj
->
h
)
error
(
"Non matching cell sizes !! h_i=%f h_j=%f
\n
"
,
ci
->
h
,
cj
->
h
);
#endif
/* Loop over all particles in ci... */
for
(
i
=
0
;
i
<
count_i
;
i
++
)
{
/* Init the ith particle's data. */
for
(
k
=
0
;
k
<
3
;
k
++
)
{
xi
[
k
]
=
parts_i
[
i
].
x
[
k
];
ai
[
k
]
=
0
.
0
f
;
}
mi
=
parts_i
[
i
].
mass
;
/* Loop over every particle in the other cell. */
for
(
j
=
0
;
j
<
count_j
;
j
++
)
{
/* Compute the pairwise distance. */
for
(
r2
=
0
.
0
,
k
=
0
;
k
<
3
;
k
++
)
{
dx
[
k
]
=
xi
[
k
]
-
parts_j
[
j
].
x
[
k
];
r2
+=
dx
[
k
]
*
dx
[
k
];
}
/* Apply the gravitational acceleration. */
ir
=
1
.
0
f
/
sqrtf
(
r2
);
w
=
const_G
*
ir
*
ir
*
ir
;
mj
=
parts_j
[
j
].
mass
;
for
(
k
=
0
;
k
<
3
;
k
++
)
{
float
wdx
=
w
*
dx
[
k
];
parts_j
[
j
].
a
[
k
]
+=
wdx
*
mi
;
ai
[
k
]
-=
wdx
*
mj
;
}
#ifdef COUNTERS
++
count_direct_unsorted
;
#endif
#if ICHECK >= 0 && 0
if
(
parts_i
[
i
].
id
==
ICHECK
)
printf
(
"[NEW] Interaction with particle id= %d (pair i) a=( %e %e %e )
\n
"
,
parts_j
[
j
].
id
,
-
mi
*
w
*
dx
[
0
],
-
mi
*
w
*
dx
[
1
],
-
mi
*
w
*
dx
[
2
]);
if
(
parts_j
[
j
].
id
==
ICHECK
)
printf
(
"[NEW] Interaction with particle id= %d (pair j) a=( %e %e %e )
\n
"
,
parts_i
[
i
].
id
,
mj
*
w
*
dx
[
0
],
mj
*
w
*
dx
[
1
],
mj
*
w
*
dx
[
2
]);
#endif
}
/* loop over every other particle. */
/* Store the accumulated acceleration on the ith part. */
for
(
k
=
0
;
k
<
3
;
k
++
)
parts_i
[
i
].
a
[
k
]
+=
ai
[
k
];
}
/* loop over all particles. */
}
static
inline
void
iact_pair_direct
(
struct
cell
*
ci
,
struct
cell
*
cj
)
{
...
...
@@ -844,85 +769,6 @@ void iact_pair(struct cell *ci, struct cell *cj) {
}
}
/**
* @brief Compute the interactions between all particles in a cell.
*
* @param c The #cell.
*/
void
iact_self_direct_dp
(
struct
cell
*
c
)
{
int
i
,
j
,
k
,
count
=
c
->
count
;
double
xi
[
3
]
=
{
0
.
0
,
0
.
0
,
0
.
0
};
float
ai
[
3
]
=
{
0
.
0
,
0
.
0
,
0
.
0
},
mi
,
mj
,
dx
[
3
]
=
{
0
.
0
,
0
.
0
,
0
.
0
},
r2
,
ir
,
w
;
struct
cell
*
cp
,
*
cps
;
struct
part
*
parts
=
c
->
parts
;
#ifdef SANITY_CHECKS
/* Early abort? */
if
(
count
==
0
)
error
(
"Empty cell !"
);
#endif
/* If the cell is split, interact each progeny with itself, and with
each of its siblings. */
if
(
c
->
split
)
{
for
(
cp
=
c
->
firstchild
;
cp
!=
c
->
sibling
;
cp
=
cp
->
sibling
)
{
iact_self_direct_dp
(
cp
);
for
(
cps
=
cp
->
sibling
;
cps
!=
c
->
sibling
;
cps
=
cps
->
sibling
)
iact_pair
(
cp
,
cps
);
}
/* Otherwise, compute the interactions directly. */
}
else
{
/* Loop over all particles... */
for
(
i
=
0
;
i
<
count
;
i
++
)
{
/* Init the ith particle's data. */
for
(
k
=
0
;
k
<
3
;
k
++
)
{
xi
[
k
]
=
parts
[
i
].
x
[
k
];
ai
[
k
]
=
0
.
0
;
}
mi
=
parts
[
i
].
mass
;
/* Loop over every following particle. */
for
(
j
=
i
+
1
;
j
<
count
;
j
++
)
{
/* Compute the pairwise distance. */
for
(
r2
=
0
.
0
,
k
=
0
;
k
<
3
;
k
++
)
{
dx
[
k
]
=
xi
[
k
]
-
parts
[
j
].
x
[
k
];
r2
+=
dx
[
k
]
*
dx
[
k
];
}
/* Apply the gravitational acceleration. */
ir
=
1
.
0
f
/
sqrtf
(
r2
);
w
=
const_G
*
ir
*
ir
*
ir
;
mj
=
parts
[
j
].
mass
;
for
(
k
=
0
;
k
<
3
;
k
++
)
{
float
wdx
=
w
*
dx
[
k
];
parts
[
j
].
a
[
k
]
+=
wdx
*
mi
;
ai
[
k
]
-=
wdx
*
mj
;
}
#if ICHECK >= 0
if
(
parts
[
i
].
id
==
ICHECK
)
message
(
"[NEW] Interaction with particle id= %d (self i)"
,
parts
[
j
].
id
);
if
(
parts
[
j
].
id
==
ICHECK
)
message
(
"[NEW] Interaction with particle id= %d (self j)"
,
parts
[
i
].
id
);
#endif
}
/* loop over every other particle. */
/* Store the accumulated acceleration on the ith part. */
for
(
k
=
0
;
k
<
3
;
k
++
)
parts
[
i
].
a
[
k
]
+=
ai
[
k
];
}
/* loop over all particles. */
}
/* otherwise, compute interactions directly. */
}
void
iact_self_direct
(
struct
cell
*
c
)
{
int
i
,
j
,
k
,
count
=
c
->
count
;
...
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