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

* various fixes related to sub diagonals and band matrix

Browse Source 
* allows 0 sized objects in Block/Map
This commit is contained in:
Gael Guennebaud
2009-07-21 11:19:52 +02:00
parent 34490f1493
commit afa8f2ca95
6 changed files with 60 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
test/bandmatrix.cpp
View File

@@ -24,15 +24,20 @@
#include "main.h"
template<typename MatrixType> void bandmatrix(MatrixType& m)
template<typename MatrixType> void bandmatrix(const MatrixType& _m)
{
typedef typename MatrixType::Scalar Scalar;
typedef typename NumTraits<Scalar>::Real RealScalar;
typedef Matrix<Scalar,Dynamic,Dynamic> DenseMatrixType;
int size = m.rows();
int rows = _m.rows();
int cols = _m.cols();
int supers = _m.supers();
int subs = _m.subs();
DenseMatrixType dm1(size,size);
MatrixType m(rows,cols,supers,subs);
DenseMatrixType dm1(rows,cols);
dm1.setZero();
m.diagonal().setConstant(123);
@@ -47,15 +52,33 @@ template<typename MatrixType> void bandmatrix(MatrixType& m)
m.diagonal(-i).setConstant(-i);
dm1.diagonal(-i).setConstant(-i);
}
std::cerr << m.toDense() << "\n\n" << dm1 << "\n\n";
//std::cerr << m.m_data << "\n\n" << m.toDense() << "\n\n" << dm1 << "\n\n\n\n";
VERIFY_IS_APPROX(dm1,m.toDense());
for (int i=0; i<cols; ++i)
{
m.col(i).setConstant(i+1);
dm1.col(i).setConstant(i+1);
}
int d = std::min(rows,cols);
int a = std::max(0,cols-d-supers);
int b = std::max(0,rows-d-subs);
if(a>0) dm1.block(0,d+supers,rows,a).setZero();
dm1.block(0,supers+1,cols-supers-1-a,cols-supers-1-a).template triangularView<UpperTriangular>().setZero();
dm1.block(subs+1,0,rows-subs-1-b,rows-subs-1-b).template triangularView<LowerTriangular>().setZero();
if(b>0) dm1.block(d+subs,0,b,cols).setZero();
//std::cerr << m.m_data << "\n\n" << 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(6,6,3,2);
CALL_SUBTEST( bandmatrix(m) );
for(int i = 0; i < 10*g_repeat ; i++) {
int rows = ei_random<int>(1,10);
int cols = ei_random<int>(1,10);
int sups = ei_random<int>(0,cols-1);
int subs = ei_random<int>(0,rows-1);
CALL_SUBTEST( bandmatrix(BandMatrix<float>(rows,cols,sups,subs)) );
}
}