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Eigen
3.2.5
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The base class for the direct Cholesky factorization of Cholmod. More...
Inherits Eigen::internal::noncopyable.
Public Member Functions | |
void | analyzePattern (const MatrixType &matrix) |
cholmod_common & | cholmod () |
Derived & | compute (const MatrixType &matrix) |
void | factorize (const MatrixType &matrix) |
ComputationInfo | info () const |
Reports whether previous computation was successful. | |
Derived & | setShift (const RealScalar &offset) |
template<typename Rhs > | |
const internal::sparse_solve_retval < CholmodBase, Rhs > | solve (const SparseMatrixBase< Rhs > &b) const |
template<typename Rhs > | |
const internal::solve_retval < CholmodBase, Rhs > | solve (const MatrixBase< Rhs > &b) const |
The base class for the direct Cholesky factorization of Cholmod.
void analyzePattern | ( | const MatrixType & | matrix | ) | [inline] |
Performs a symbolic decomposition on the sparsity pattern of matrix.
This function is particularly useful when solving for several problems having the same structure.
Referenced by CholmodBase< _MatrixType, _UpLo, CholmodSimplicialLLT< _MatrixType, _UpLo > >::compute().
cholmod_common& cholmod | ( | ) | [inline] |
Returns a reference to the Cholmod's configuration structure to get a full control over the performed operations. See the Cholmod user guide for details.
Derived& compute | ( | const MatrixType & | matrix | ) | [inline] |
Computes the sparse Cholesky decomposition of matrix
void factorize | ( | const MatrixType & | matrix | ) | [inline] |
Performs a numeric decomposition of matrix
The given matrix must have the same sparsity pattern as the matrix on which the symbolic decomposition has been performed.
Referenced by CholmodBase< _MatrixType, _UpLo, CholmodSimplicialLLT< _MatrixType, _UpLo > >::compute().
ComputationInfo info | ( | ) | const [inline] |
Reports whether previous computation was successful.
Success
if computation was succesful, NumericalIssue
if the matrix.appears to be negative. Derived& setShift | ( | const RealScalar & | offset | ) | [inline] |
Sets the shift parameter that will be used to adjust the diagonal coefficients during the numerical factorization.
During the numerical factorization, an offset term is added to the diagonal coefficients:
d_ii
= offset + d_ii
The default is offset=0.
*this
. const internal::sparse_solve_retval<CholmodBase, Rhs> solve | ( | const SparseMatrixBase< Rhs > & | b | ) | const [inline] |
const internal::solve_retval<CholmodBase, Rhs> solve | ( | const MatrixBase< Rhs > & | b | ) | const [inline] |