devtools/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2026-04-10 11:34:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

started an implementation of BandMatrix: at least the read/write access

Browse Source 
to the main/sub/super diagonals seems to work well.
This commit is contained in:
Gael Guennebaud
2009-07-14 23:27:37 +02:00
parent 8120a5cecd
commit 587029a612
5 changed files with 219 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

61
test/bandmatrix.cpp Normal file
View File

@@ -0,0 +1,61 @@
// This file is triangularView of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2008-2009 Gael Guennebaud <gael.guennebaud@gmail.com>
//
// Eigen 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.
//
// Alternatively, you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of
// the License, or (at your option) any later version.
//
// Eigen 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 or the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License and a copy of the GNU General Public License along with
// Eigen. If not, see <http://www.gnu.org/licenses/>.
#include "main.h"
template<typename MatrixType> void bandmatrix(MatrixType& m)
{
typedef typename MatrixType::Scalar Scalar;
typedef typename NumTraits<Scalar>::Real RealScalar;
typedef Matrix<Scalar,Dynamic,Dynamic> DenseMatrixType;
int size = m.rows();
DenseMatrixType dm1(size,size);
dm1.setZero();
m.diagonal().setConstant(123);
dm1.diagonal().setConstant(123);
for (int i=1; i<=m.supers();++i)
{
m.diagonal(i).setConstant(i);
dm1.diagonal(i).setConstant(i);
}
for (int i=1; i<=m.subs();++i)
{
m.diagonal(-i).setConstant(-i);
dm1.diagonal(-i).setConstant(-i);
}
std::cerr << m.toDense() << "\n\n" << dm1 << "\n\n";
VERIFY_IS_APPROX(dm1,m.toDense());
}
void test_bandmatrix()
{
for(int i = 0; i < g_repeat ; i++) {
BandMatrix<float,Dynamic,Dynamic,Dynamic> m(6,3,2);
CALL_SUBTEST( bandmatrix(m) );
}
}