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* update test to expose bug #57

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* update createRandomMatrixOfRank to support fixed size
This commit is contained in:
Benoit Jacob
2009-09-28 09:40:18 -04:00
parent de942a44c2
commit 67bf7c90c5
3 changed files with 46 additions and 6 deletions
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14
test/main.h
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@@ -248,18 +248,22 @@ template<typename MatrixType>
void createRandomMatrixOfRank(int desired_rank, int rows, int cols, MatrixType& m)
{
typedef typename ei_traits<MatrixType>::Scalar Scalar;
typedef Matrix<Scalar, Dynamic, 1> VectorType;
enum { Rows = MatrixType::RowsAtCompileTime, Cols = MatrixType::ColsAtCompileTime };
MatrixType a = MatrixType::Random(rows,rows);
typedef Matrix<Scalar, Dynamic, 1> VectorType;
typedef Matrix<Scalar, Rows, Rows> MatrixAType;
typedef Matrix<Scalar, Cols, Cols> MatrixBType;
MatrixAType a = MatrixAType::Random(rows,rows);
MatrixType d = MatrixType::Identity(rows,cols);
MatrixType b = MatrixType::Random(cols,cols);
MatrixBType b = MatrixBType::Random(cols,cols);
// set the diagonal such that only desired_rank non-zero entries reamain
const int diag_size = std::min(d.rows(),d.cols());
d.diagonal().segment(desired_rank, diag_size-desired_rank) = VectorType::Zero(diag_size-desired_rank);
HouseholderQR<MatrixType> qra(a);
HouseholderQR<MatrixType> qrb(b);
HouseholderQR<MatrixAType> qra(a);
HouseholderQR<MatrixBType> qrb(b);
m = qra.matrixQ() * d * qrb.matrixQ();
}