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Return matrices by constant reference where possible.

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This changes the return type of:
* eigenvectors() and eigenvalues() in ComplexEigenSolver
* eigenvalues() in EigenSolver
* eigenvectors() and eigenvalues() in SelfAdjointEigenSolver
This commit is contained in:
Jitse Niesen
2010-05-24 17:43:27 +01:00
parent 7a43a4408b
commit 8a3f552e39
3 changed files with 12 additions and 8 deletions
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4
Eigen/src/Eigenvalues/EigenSolver.h
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@@ -223,7 +223,7 @@ template<typename _MatrixType> class EigenSolver
/** \brief Returns the eigenvalues of given matrix.
*
* \returns Column vector containing the eigenvalues.
* \returns A const reference to the column vector containing the eigenvalues.
*
* \pre Either the constructor EigenSolver(const MatrixType&) or the
* member function compute(const MatrixType&) has been called before.
@@ -237,7 +237,7 @@ template<typename _MatrixType> class EigenSolver
* \sa eigenvectors(), pseudoEigenvalueMatrix(),
* MatrixBase::eigenvalues()
*/
EigenvalueType eigenvalues() const
const EigenvalueType& eigenvalues() const
{
ei_assert(m_isInitialized && "EigenSolver is not initialized.");
return m_eivalues;