diff options
Diffstat (limited to 'Eigen/src/Core/SelfAdjointView.h')
| -rw-r--r-- | Eigen/src/Core/SelfAdjointView.h | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/Eigen/src/Core/SelfAdjointView.h b/Eigen/src/Core/SelfAdjointView.h index 9fda02691..62d4180da 100644 --- a/Eigen/src/Core/SelfAdjointView.h +++ b/Eigen/src/Core/SelfAdjointView.h @@ -55,6 +55,7 @@ template<typename _MatrixType, unsigned int UpLo> class SelfAdjointView typedef TriangularBase<SelfAdjointView> Base; typedef typename internal::traits<SelfAdjointView>::MatrixTypeNested MatrixTypeNested; typedef typename internal::traits<SelfAdjointView>::MatrixTypeNestedCleaned MatrixTypeNestedCleaned; + typedef MatrixTypeNestedCleaned NestedExpression; /** \brief The type of coefficients in this matrix */ typedef typename internal::traits<SelfAdjointView>::Scalar Scalar; @@ -128,7 +129,7 @@ template<typename _MatrixType, unsigned int UpLo> class SelfAdjointView } friend EIGEN_DEVICE_FUNC - const SelfAdjointView<const CwiseUnaryOp<internal::scalar_multiple_op<Scalar>,MatrixType>,UpLo> + const SelfAdjointView<const EIGEN_SCALAR_BINARYOP_EXPR_RETURN_TYPE(Scalar,MatrixType,product),UpLo> operator*(const Scalar& s, const SelfAdjointView& mat) { return (s*mat.nestedExpression()).template selfadjointView<UpLo>(); @@ -162,6 +163,41 @@ 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<typename MatrixType::AdjointReturnType,TriMode> >::type + triangularView() const + { + typename internal::conditional<(TriMode&(Upper|Lower))==(UpLo&(Upper|Lower)), MatrixType&, typename MatrixType::ConstTransposeReturnType>::type tmp1(m_matrix); + typename internal::conditional<(TriMode&(Upper|Lower))==(UpLo&(Upper|Lower)), MatrixType&, typename MatrixType::AdjointReturnType>::type tmp2(tmp1); + return typename internal::conditional<(TriMode&(Upper|Lower))==(UpLo&(Upper|Lower)), + TriangularView<MatrixType,TriMode>, + TriangularView<typename MatrixType::AdjointReturnType,TriMode> >::type(tmp2); + } + + /** \returns a const expression of the main diagonal of the matrix \c *this + * + * This method simply returns the diagonal of the nested expression, thus by-passing the SelfAdjointView decorator. + * + * \sa MatrixBase::diagonal(), class Diagonal */ + EIGEN_DEVICE_FUNC + typename MatrixType::ConstDiagonalReturnType diagonal() const + { + return typename MatrixType::ConstDiagonalReturnType(m_matrix); + } + /////////// Cholesky module /////////// const LLT<PlainObject, UpLo> llt() const; |