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compute_reduce.cc
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rLIBMULTISCALE LibMultiScale
compute_reduce.cc
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/**
* @file compute_reduce.cc
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
*
* @date Tue Dec 10 16:00:49 2013
*
* @brief This is a compute which reduce to scalar quantities
*
* @section LICENSE
*
* Copyright (©) 2010-2011 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* LibMultiScale is free software: you can redistribute it and/or modify it
* under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* LibMultiScale is distributed in the hope that it will be useful, but
* WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with LibMultiScale. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "compute_reduce.hh"
#include "lib_md.hh"
#include "lm_common.hh"
#include "math_tools.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_LIBMULTISCALE__
/* -------------------------------------------------------------------------- */
ComputeReduce
::
ComputeReduce
(
const
std
::
string
&
name
)
:
LMObject
(
name
)
{
this
->
createInput
(
"input"
);
this
->
createArrayOutput
(
"reduced"
);
}
/* -------------------------------------------------------------------------- */
ComputeReduce
::~
ComputeReduce
()
{}
/* -------------------------------------------------------------------------- */
template
<
Operator
Op
,
typename
Cont
,
typename
V
>
std
::
enable_if_t
<
not
std
::
is_arithmetic_v
<
V
>>
reduce
(
Cont
&
cont
,
V
&
reduced_data
)
{
MathTools
::
ReduceOperator
<
Op
,
V
>
ops
;
ops
.
init
(
reduced_data
.
rows
(),
reduced_data
.
cols
());
for
(
auto
&&
val
:
cont
.
rowwise
())
{
ops
.
account
(
val
);
}
reduced_data
=
ops
.
result
(
cont
.
getCommGroup
());
}
/* -------------------------------------------------------------------------- */
template
<
typename
Cont
>
void
ComputeReduce
::
build
(
Cont
&
cont
)
{
const
UInt
Dim
=
cont
.
getDim
();
Array
reduced_data
(
1
,
Dim
);
auto
&
array
=
this
->
getOutputAsArray
();
array
.
resize
(
array
.
rows
(),
Dim
);
switch
(
op
)
{
case
OP_MAX:
reduce
<
OP_MAX
>
(
cont
,
reduced_data
);
break
;
case
OP_MIN:
reduce
<
OP_MIN
>
(
cont
,
reduced_data
);
break
;
case
OP_SUM:
reduce
<
OP_SUM
>
(
cont
,
reduced_data
);
break
;
case
OP_AVERAGE:
reduce
<
OP_AVERAGE
>
(
cont
,
reduced_data
);
break
;
default
:
LM_FATAL
(
"Operator "
<<
op
<<
" not handled"
);
}
this
->
clear
();
this
->
getOutputAsArray
().
push_back
(
reduced_data
);
}
/* -------------------------------------------------------------------------- */
/* LMDESC REDUCE
This computes a reduced version of a set of reals
*/
/* LMEXAMPLE
COMPUTE disp EXTRACT INPUT md FIELD displacement\\
COMPUTE sum REDUCE INPUT disp OPERATOR MAX
*/
inline
void
ComputeReduce
::
declareParams
()
{
ComputeInterface
::
declareParams
();
/* LMKEYWORD OPERATOR
Specify the operator to use for the reduction. \\
At present time the available operations are:
\begin{itemize}
\item MIN
\item MAX
\item SUM
\item AVERAGE
\end{itemize}
*/
this
->
parseKeyword
(
"OPERATOR"
,
op
);
}
/* -------------------------------------------------------------------------- */
DECLARE_COMPUTE_MAKE_CALL
(
ComputeReduce
)
__END_LIBMULTISCALE__
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