Inplace LU decomposition of a skyline matrix and associated features.
| MatrixType | the type of the matrix of which we are computing the LU factorization |
Public Member Functions | |
| SkylineInplaceLU (MatrixType &matrix, int flags=0) | |
| Creates a LU object and compute the respective factorization of matrix using flags flags. | |
| void | setPrecision (RealScalar v) |
| Sets the relative threshold value used to prune zero coefficients during the decomposition. | |
| RealScalar | precision () const |
| void | setFlags (int f) |
| Sets the flags. | |
| int | flags () const |
| void | setOrderingMethod (int m) |
| int | orderingMethod () const |
| void | compute () |
| Computes/re-computes the LU factorization. | |
| void | computeRowMajor () |
| template<typename BDerived , typename XDerived > | |
| bool | solve (const MatrixBase< BDerived > &b, MatrixBase< XDerived > *x, const int transposed=0) const |
| Computes *x = U^-1 L^-1 b. | |
| bool | succeeded (void) const |
Protected Types | |
| typedef MatrixType::Scalar | Scalar |
| typedef MatrixType::Index | Index |
| typedef NumTraits< typename MatrixType::Scalar >::Real | RealScalar |
Protected Attributes | |
| RealScalar | m_precision |
| int | m_flags |
| int | m_status |
| bool | m_succeeded |
| MatrixType & | m_lu |
typedef MatrixType::Index Eigen::SkylineInplaceLU< MatrixType >::Index [protected] |
typedef NumTraits<typename MatrixType::Scalar>::Real Eigen::SkylineInplaceLU< MatrixType >::RealScalar [protected] |
typedef MatrixType::Scalar Eigen::SkylineInplaceLU< MatrixType >::Scalar [protected] |
| Eigen::SkylineInplaceLU< MatrixType >::SkylineInplaceLU | ( | MatrixType & | matrix, |
| int | flags = 0 |
||
| ) | [inline] |
| void Eigen::SkylineInplaceLU< MatrixType >::compute | ( | ) |
Computes/re-computes the LU factorization.
Computes / recomputes the in place LU decomposition of the SkylineInplaceLU.
using the default algorithm.
| void Eigen::SkylineInplaceLU< MatrixType >::computeRowMajor | ( | ) |
| int Eigen::SkylineInplaceLU< MatrixType >::flags | ( | ) | const [inline] |
| int Eigen::SkylineInplaceLU< MatrixType >::orderingMethod | ( | ) | const [inline] |
| RealScalar Eigen::SkylineInplaceLU< MatrixType >::precision | ( | ) | const [inline] |
| void Eigen::SkylineInplaceLU< MatrixType >::setFlags | ( | int | f | ) | [inline] |
| void Eigen::SkylineInplaceLU< MatrixType >::setOrderingMethod | ( | int | m | ) | [inline] |
| void Eigen::SkylineInplaceLU< MatrixType >::setPrecision | ( | RealScalar | v | ) | [inline] |
Sets the relative threshold value used to prune zero coefficients during the decomposition.
Setting a value greater than zero speeds up computation, and yields to an imcomplete factorization with fewer non zero coefficients. Such approximate factors are especially useful to initialize an iterative solver.
Note that the exact meaning of this parameter might depends on the actual backend. Moreover, not all backends support this feature.
| bool Eigen::SkylineInplaceLU< MatrixType >::solve | ( | const MatrixBase< BDerived > & | b, |
| MatrixBase< XDerived > * | x, | ||
| const int | transposed = 0 |
||
| ) | const |
Computes *x = U^-1 L^-1 b.
If transpose is set to SvTranspose or SvAdjoint, the solution of the transposed/adjoint system is computed instead.
Not all backends implement the solution of the transposed or adjoint system.
| bool Eigen::SkylineInplaceLU< MatrixType >::succeeded | ( | void | ) | const [inline] |
int Eigen::SkylineInplaceLU< MatrixType >::m_flags [protected] |
MatrixType& Eigen::SkylineInplaceLU< MatrixType >::m_lu [protected] |
RealScalar Eigen::SkylineInplaceLU< MatrixType >::m_precision [protected] |
int Eigen::SkylineInplaceLU< MatrixType >::m_status [mutable, protected] |
bool Eigen::SkylineInplaceLU< MatrixType >::m_succeeded [protected] |
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