diff options
Diffstat (limited to 'Eigen/src/Cholesky/LLT.h')
| -rw-r--r-- | Eigen/src/Cholesky/LLT.h | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/Eigen/src/Cholesky/LLT.h b/Eigen/src/Cholesky/LLT.h index 19578b216..ddf4875ab 100644 --- a/Eigen/src/Cholesky/LLT.h +++ b/Eigen/src/Cholesky/LLT.h @@ -41,6 +41,8 @@ template<typename MatrixType, int UpLo> struct LLT_Traits; * Example: \include LLT_example.cpp * Output: \verbinclude LLT_example.out * + * This class supports the \link InplaceDecomposition inplace decomposition \endlink mechanism. + * * \sa MatrixBase::llt(), SelfAdjointView::llt(), class LDLT */ /* HEY THIS DOX IS DISABLED BECAUSE THERE's A BUG EITHER HERE OR IN LDLT ABOUT THAT (OR BOTH) @@ -54,7 +56,6 @@ template<typename _MatrixType, int _UpLo> class LLT enum { RowsAtCompileTime = MatrixType::RowsAtCompileTime, ColsAtCompileTime = MatrixType::ColsAtCompileTime, - Options = MatrixType::Options, MaxColsAtCompileTime = MatrixType::MaxColsAtCompileTime }; typedef typename MatrixType::Scalar Scalar; @@ -95,6 +96,21 @@ template<typename _MatrixType, int _UpLo> class LLT compute(matrix.derived()); } + /** \brief Constructs a LDLT factorization from a given matrix + * + * This overloaded constructor is provided for \link InplaceDecomposition inplace decomposition \endlink when + * \c MatrixType is a Eigen::Ref. + * + * \sa LLT(const EigenBase&) + */ + template<typename InputType> + explicit LLT(EigenBase<InputType>& matrix) + : m_matrix(matrix.derived()), + m_isInitialized(false) + { + compute(matrix.derived()); + } + /** \returns a view of the upper triangular matrix U */ inline typename Traits::MatrixU matrixU() const { @@ -491,7 +507,6 @@ MatrixType LLT<MatrixType,_UpLo>::reconstructedMatrix() const return matrixL() * matrixL().adjoint().toDenseMatrix(); } -#ifndef __CUDACC__ /** \cholesky_module * \returns the LLT decomposition of \c *this * \sa SelfAdjointView::llt() @@ -513,7 +528,6 @@ SelfAdjointView<MatrixType, UpLo>::llt() const { return LLT<PlainObject,UpLo>(m_matrix); } -#endif // __CUDACC__ } // end namespace Eigen |