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

Allow ComplexEigenSolver and ComplexSchur to work with real matrices.

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

8
Eigen/src/Eigenvalues/ComplexEigenSolver.h
View File

@@ -171,7 +171,7 @@ template<typename _MatrixType> class ComplexEigenSolver
void compute(const MatrixType& matrix);
protected:
MatrixType m_eivec;
EigenvectorType m_eivec;
EigenvalueType m_eivalues;
bool m_isInitialized;
};
@@ -195,21 +195,21 @@ void ComplexEigenSolver<MatrixType>::compute(const MatrixType& matrix)
m_eivec.setZero();
Scalar d2, z;
Complex d2, z;
RealScalar norm = matrix.norm();
// compute the (normalized) eigenvectors
for(int k=n-1 ; k>=0 ; k--)
{
d2 = schur.matrixT().coeff(k,k);
m_eivec.coeffRef(k,k) = Scalar(1.0,0.0);
m_eivec.coeffRef(k,k) = Complex(1.0,0.0);
for(int i=k-1 ; i>=0 ; i--)
{
m_eivec.coeffRef(i,k) = -schur.matrixT().coeff(i,k);
if(k-i-1>0)
m_eivec.coeffRef(i,k) -= (schur.matrixT().row(i).segment(i+1,k-i-1) * m_eivec.col(k).segment(i+1,k-i-1)).value();
z = schur.matrixT().coeff(i,i) - d2;
if(z==Scalar(0))
if(z==Complex(0))
ei_real_ref(z) = eps * norm;
m_eivec.coeffRef(i,k) = m_eivec.coeff(i,k) / z;