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Eigen  3.4.99 (git rev 10c77b0ff44d0b9cb0b252cfa0ccaaa39d3c5da4)
Eigen::PastixLDLT< _MatrixType, _UpLo > Class Template Reference

Detailed Description

template<typename _MatrixType, int _UpLo>
class Eigen::PastixLDLT< _MatrixType, _UpLo >

A sparse direct supernodal Cholesky (LLT) factorization and solver based on the PaStiX library.

This class is used to solve the linear systems A.X = B via a LDL^T supernodal Cholesky factorization available in the PaStiX library. The matrix A should be symmetric and positive definite WARNING Selfadjoint complex matrices are not supported in the current version of PaStiX The vectors or matrices X and B can be either dense or sparse

Template Parameters
MatrixTypethe type of the sparse matrix A, it must be a SparseMatrix<>
UpLoThe part of the matrix to use : Lower or Upper. The default is Lower as required by PaStiX

This class follows the sparse solver concept .

See also
Sparse solver concept, class SimplicialLDLT

Inherits Eigen::PastixBase< Derived >.

Public Member Functions

void analyzePattern (const MatrixType &matrix)
 
void compute (const MatrixType &matrix)
 
void factorize (const MatrixType &matrix)
 

Member Function Documentation

◆ analyzePattern()

template<typename _MatrixType , int _UpLo>
void Eigen::PastixLDLT< _MatrixType, _UpLo >::analyzePattern ( const MatrixType &  matrix)
inline

Compute the LDL^T symbolic factorization of matrix using its sparsity pattern The result of this operation can be used with successive matrices having the same pattern as matrix

See also
factorize()

◆ compute()

template<typename _MatrixType , int _UpLo>
void Eigen::PastixLDLT< _MatrixType, _UpLo >::compute ( const MatrixType &  matrix)
inline

Compute the L and D factors of the LDL^T factorization of matrix

See also
analyzePattern() factorize()

◆ factorize()

template<typename _MatrixType , int _UpLo>
void Eigen::PastixLDLT< _MatrixType, _UpLo >::factorize ( const MatrixType &  matrix)
inline

Compute the LDL^T supernodal numerical factorization of matrix


The documentation for this class was generated from the following file: