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LSST Data Management Base Package
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CholmodSimplicialLDLT2< _MatrixType, _UpLo > Class Template Reference

#include <Eigenstuff.h>

Inheritance diagram for CholmodSimplicialLDLT2< _MatrixType, _UpLo >:

Public Types

using MatrixType = _MatrixType
 
using Index = typename MatrixType::Index
 
using RealScalar = typename MatrixType::RealScalar
 

Public Member Functions

 CholmodSimplicialLDLT2 ()
 
 CholmodSimplicialLDLT2 (MatrixType const &matrix)
 
void update (SparseMatrixD const &H, bool UpOrDown)
 

Protected Member Functions

void init ()
 

Detailed Description

template<typename _MatrixType, int _UpLo = Eigen::Lower>
class CholmodSimplicialLDLT2< _MatrixType, _UpLo >

Definition at line 50 of file Eigenstuff.h.

Member Typedef Documentation

◆ Index

template<typename _MatrixType, int _UpLo = Eigen::Lower>
using CholmodSimplicialLDLT2< _MatrixType, _UpLo >::Index = typename MatrixType::Index

Definition at line 57 of file Eigenstuff.h.

◆ MatrixType

template<typename _MatrixType, int _UpLo = Eigen::Lower>
using CholmodSimplicialLDLT2< _MatrixType, _UpLo >::MatrixType = _MatrixType

Definition at line 56 of file Eigenstuff.h.

◆ RealScalar

template<typename _MatrixType, int _UpLo = Eigen::Lower>
using CholmodSimplicialLDLT2< _MatrixType, _UpLo >::RealScalar = typename MatrixType::RealScalar

Definition at line 58 of file Eigenstuff.h.

Constructor & Destructor Documentation

◆ CholmodSimplicialLDLT2() [1/2]

template<typename _MatrixType, int _UpLo = Eigen::Lower>
CholmodSimplicialLDLT2< _MatrixType, _UpLo >::CholmodSimplicialLDLT2 ( )
inline

Definition at line 60 of file Eigenstuff.h.

60: Base() { init(); }

◆ CholmodSimplicialLDLT2() [2/2]

template<typename _MatrixType, int _UpLo = Eigen::Lower>
CholmodSimplicialLDLT2< _MatrixType, _UpLo >::CholmodSimplicialLDLT2 ( MatrixType const & matrix)
inline

Definition at line 62 of file Eigenstuff.h.

62 : Base() {
63 init();
64 this->compute(matrix);
65 }

Member Function Documentation

◆ init()

template<typename _MatrixType, int _UpLo = Eigen::Lower>
void CholmodSimplicialLDLT2< _MatrixType, _UpLo >::init ( )
inlineprotected

Definition at line 90 of file Eigenstuff.h.

90 {
91 m_cholmod.final_asis = 1;
92 m_cholmod.supernodal = CHOLMOD_SIMPLICIAL;
93 // In CholmodBase::CholmodBase(), the following statement is missing in
94 // SuiteSparse 3.2.0.8. Fixed in 3.2.7
96 }
typename MatrixType::RealScalar RealScalar
Definition Eigenstuff.h:58

◆ update()

template<typename _MatrixType, int _UpLo = Eigen::Lower>
void CholmodSimplicialLDLT2< _MatrixType, _UpLo >::update ( SparseMatrixD const & H,
bool UpOrDown )
inline

Definition at line 68 of file Eigenstuff.h.

68 {
69 // check size
72 eigen_assert(size == H.rows());
73
75 /* We have to apply the magic permutation to the update matrix,
76 read page 117 of Cholmod UserGuide.pdf */
77 // Using cholmod_l_* functions instead of cholmod_* because index is Eigen::Index instead of int.
80 Base::m_cholmodFactor->n, nullptr, -1, true, true, &this->cholmod());
84 if (!isOk) {
85 throw(LSST_EXCEPT(lsst::pex::exceptions::RuntimeError, "cholmod_update failed!"));
86 }
87 }
#define LSST_EXCEPT(type,...)
Create an exception with a given type.
Definition Exception.h:48
typename MatrixType::Index Index
Definition Eigenstuff.h:57

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