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Allow ComplexEigenSolver and ComplexSchur to work with real matrices.

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Add a test which covers this case.
This commit is contained in:
Jitse Niesen
2010-03-20 17:04:40 +00:00
parent d3e271c47e
commit d91ffffc37
3 changed files with 8 additions and 7 deletions
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6
Eigen/src/Eigenvalues/ComplexSchur.h
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@@ -158,8 +158,8 @@ void ComplexSchur<MatrixType>::compute(const MatrixType& matrix, bool skipU)
// TODO skip Q if skipU = true
HessenbergDecomposition<MatrixType> hess(matrix);
m_matT = hess.matrixH();
if(!skipU) m_matU = hess.matrixQ();
m_matT = hess.matrixH().template cast<Complex>();
if(!skipU) m_matU = hess.matrixQ().template cast<Complex>();
// Reduce the Hessenberg matrix m_matT to triangular form by QR iteration.
@@ -221,7 +221,7 @@ void ComplexSchur<MatrixType>::compute(const MatrixType& matrix, bool skipU)
// compute the shift kappa as one of the eigenvalues of the 2x2
// diagonal block on the bottom of the active submatrix
Matrix<Scalar,2,2> t = m_matT.template block<2,2>(iu-1,iu-1);
Matrix<Complex,2,2> t = m_matT.template block<2,2>(iu-1,iu-1);
sf = t.cwiseAbs().sum();
t /= sf; // the normalization by sf is to avoid under/overflow