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author | Gael Guennebaud <g.gael@free.fr> | 2016-05-19 11:36:38 +0200 |
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committer | Gael Guennebaud <g.gael@free.fr> | 2016-05-19 11:36:38 +0200 |
commit | b6b8578a678c0ebe8ed80bdd975882d37902952f (patch) | |
tree | 5d322310a1524c8df96f74a67e11ba90367f65d4 /Eigen/src/Core/SelfAdjointView.h | |
parent | bb3ff8e9d91bbab7165add8c6d2a991e7b9be02f (diff) |
bug #1230: add support for SelfadjointView::triangularView.
Diffstat (limited to 'Eigen/src/Core/SelfAdjointView.h')
-rw-r--r-- | Eigen/src/Core/SelfAdjointView.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/Eigen/src/Core/SelfAdjointView.h b/Eigen/src/Core/SelfAdjointView.h index 9fda02691..3a8cc221f 100644 --- a/Eigen/src/Core/SelfAdjointView.h +++ b/Eigen/src/Core/SelfAdjointView.h @@ -162,6 +162,29 @@ template<typename _MatrixType, unsigned int UpLo> class SelfAdjointView EIGEN_DEVICE_FUNC SelfAdjointView& rankUpdate(const MatrixBase<DerivedU>& u, const Scalar& alpha = Scalar(1)); + /** \returns an expression of a triangular view extracted from the current selfadjoint view of a given triangular part + * + * The parameter \a TriMode can have the following values: \c #Upper, \c #StrictlyUpper, \c #UnitUpper, + * \c #Lower, \c #StrictlyLower, \c #UnitLower. + * + * If \c TriMode references the same triangular part than \c *this, then this method simply return a \c TriangularView of the nested expression, + * otherwise, the nested expression is first transposed, thus returning a \c TriangularView<Transpose<MatrixType>> object. + * + * \sa MatrixBase::triangularView(), class TriangularView + */ + template<unsigned int TriMode> + EIGEN_DEVICE_FUNC + typename internal::conditional<(TriMode&(Upper|Lower))==(UpLo&(Upper|Lower)), + TriangularView<MatrixType,TriMode>, + TriangularView<const Transpose<MatrixType>,TriMode> >::type + triangularView() const + { + typename internal::conditional<(TriMode&(Upper|Lower))==(UpLo&(Upper|Lower)), MatrixType&, Transpose<MatrixType> >::type tmp(m_matrix); + return typename internal::conditional<(TriMode&(Upper|Lower))==(UpLo&(Upper|Lower)), + TriangularView<MatrixType,TriMode>, + TriangularView<const Transpose<MatrixType>,TriMode> >::type(tmp); + } + /////////// Cholesky module /////////// const LLT<PlainObject, UpLo> llt() const; |