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src
shogun
mathematics
linalg
linop
DenseMatrixOperator.h
Go to the documentation of this file.
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* Written (W) 2013 Soumyajit De
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*/
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#ifndef DENSE_MATRIX_OPERATOR_H_
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#define DENSE_MATRIX_OPERATOR_H_
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#include <
shogun/lib/config.h
>
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#ifdef HAVE_EIGEN3
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#include <
shogun/mathematics/linalg/linop/MatrixOperator.h
>
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namespace
shogun
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{
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template
<
class
T>
class
SGVector;
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template
<
class
T>
class
SGMatrix;
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template
<
class
T>
class
CDenseMatrixOperator
:
public
CMatrixOperator
<T>
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{
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typedef
bool
supports_complex128_t;
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public
:
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CDenseMatrixOperator
();
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explicit
CDenseMatrixOperator
(
SGMatrix<T>
op);
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CDenseMatrixOperator
(
const
CDenseMatrixOperator<T>
& orig);
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~CDenseMatrixOperator
();
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virtual
SGVector<T>
apply
(
SGVector<T>
b)
const
;
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virtual
void
set_diagonal
(
SGVector<T>
diag);
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virtual
SGVector<T>
get_diagonal
()
const
;
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SGMatrix<T>
get_matrix_operator
()
const
;
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template
<
class
Scalar>
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inline
operator
CDenseMatrixOperator<Scalar>
*()
const
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{
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REQUIRE
(m_operator.matrix,
"Matrix is not initialized!\n"
);
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SGMatrix<Scalar>
casted_m(m_operator.num_rows, m_operator.num_cols);
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for
(
index_t
i=0; i<m_operator.num_cols; ++i)
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{
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for
(
index_t
j=0; j<m_operator.num_rows; ++j)
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casted_m(j,i)=
static_cast<
Scalar
>
(m_operator(j,i));
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}
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SG_SDEBUG
(
"DenseMatrixOperator::static_cast(): Creating casted operator!\n"
);
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return
new
CDenseMatrixOperator<Scalar>
(casted_m);
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}
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virtual
const
char
*
get_name
()
const
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{
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return
"DenseMatrixOperator"
;
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}
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private
:
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SGMatrix<T>
m_operator;
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void
init();
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};
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}
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#endif // HAVE_EIGEN3
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#endif // DENSE_MATRIX_OPERATOR_H_
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