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Gael Guennebaud
2009-07-15 19:54:31 +02:00
parent 079fa81d84 1578421ed1
commit 97c9445c60
5 changed files with 11 additions and 7 deletions
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Eigen/src/QR/Tridiagonalization.h
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@@ -277,6 +277,7 @@ Tridiagonalization<MatrixType>::matrixQ(void) const
Scalar tmp = m_matrix.coeff(i+1,i);
m_matrix.const_cast_derived().coeffRef(i+1,i) = 1;
// TODO this product could be optimized by processing the submatrix per panel of at least 4 columns
matQ.corner(BottomRight,n-i-1,n-i-1) -=
((m_hCoeffs.coeff(i) * m_matrix.col(i).end(n-i-1)) *
(m_matrix.col(i).end(n-i-1).adjoint() * matQ.corner(BottomRight,n-i-1,n-i-1)).lazy()).lazy();