Page Menu
Home
c4science
Search
Configure Global Search
Log In
Files
F81501441
sparse_qr.hpp
No One
Temporary
Actions
Download File
Edit File
Delete File
View Transforms
Subscribe
Mute Notifications
Award Token
Subscribers
None
File Metadata
Details
File Info
Storage
Attached
Created
Fri, Sep 6, 10:05
Size
3 KB
Mime Type
text/x-c++
Expires
Sun, Sep 8, 10:05 (2 d)
Engine
blob
Format
Raw Data
Handle
20524095
Attached To
rSPECMICP SpecMiCP / ReactMiCP
sparse_qr.hpp
View Options
/* =============================================================================
Copyright (c) 2014 - 2016
F. Georget <fabieng@princeton.edu> Princeton University
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from this
software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
============================================================================= */
#ifndef SPECMICP_SPARSESOLVERS_SPARSEQR_HPP
#define SPECMICP_SPARSESOLVERS_SPARSEQR_HPP
/*!
\file sparse_solvers/sparse_qr.hpp
\brief Wrapper around the Eigen SparseQR algorithm
*/
#include "sparse_solver_structs.hpp"
#include "sparse_solver_base.hpp"
#include <Eigen/SparseQR>
namespace
specmicp
{
namespace
sparse_solvers
{
//! \brief Wrapper aroung the Eigen SparseQR algorithm
template
<
class
MatrixT
,
class
DerivedR
,
class
DerivedS
>
class
SparseSolverQR
:
public
SparseSolverBase
<
MatrixT
,
DerivedR
,
DerivedS
>
{
using
SolverT
=
Eigen
::
SparseQR
<
MatrixT
,
Eigen
::
COLAMDOrdering
<
int
>>
;
public
:
// Has an effect for the QR algorithm
void
analyse_pattern
(
MatrixT
&
jacobian
)
override
{
m_solver
.
analyzePattern
(
jacobian
);
}
SparseSolverReturnCode
decompose
(
MatrixT
&
jacobian
)
override
{
m_solver
.
factorize
(
jacobian
);
if
(
m_solver
.
info
()
!=
Eigen
::
Success
)
{
return
SparseSolverReturnCode
::
FailedDecomposition
;
}
return
SparseSolverReturnCode
::
Success
;
}
SparseSolverReturnCode
solve
(
const
DerivedR
&
residuals
,
DerivedS
&
solution
)
override
{
solution
=
m_solver
.
solve
(
-
residuals
);
if
(
m_solver
.
info
()
!=
Eigen
::
Success
)
{
return
SparseSolverReturnCode
::
FailedSystemSolving
;
}
return
SparseSolverReturnCode
::
Success
;
}
SparseSolverReturnCode
solve_scaling
(
const
DerivedR
&
residuals
,
const
DerivedR
&
scaling
,
DerivedS
&
solution
)
override
{
solution
=
m_solver
.
solve
(
scaling
.
asDiagonal
()
*
(
-
residuals
));
if
(
m_solver
.
info
()
!=
Eigen
::
Success
)
{
return
SparseSolverReturnCode
::
FailedSystemSolving
;
}
return
SparseSolverReturnCode
::
Success
;
}
private
:
SolverT
m_solver
;
};
}
// end namespace sparse_solvers
}
// end namespace specmicp
#endif
//SPECMICP_SPARSESOLVERS_SPARSEQR_HPP
Event Timeline
Log In to Comment