numcxx::TPreconJacobi< T > Class Template Reference

Description

template<typename T>
class numcxx::TPreconJacobi< T >

Jacobi preconditioner class.

Definition at line 16 of file tprecon-jacobi.hxx.

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Public Member Functions
	TPreconJacobi (const std::shared_ptr< TSparseMatrix< T >> pA)
	Create Preconditioner. More...
	TPreconJacobi (TSparseMatrix< T > &A)
	~TPreconJacobi ()
void	update (TSparseMatrix< T > &A)
	Perform actual computation preconditioner. More...
void	solve (TArray< T > &Sol, const TArray< T > &Rhs) const
	Solve preconditioning system. More...
virtual void	update (void)

Static Public Member Functions
static std::shared_ptr< TPreconJacobi< T > >	create (const std::shared_ptr< TSparseMatrix< T >> pA)
	Create preconditioner. More...

Public Attributes
std::shared_ptr< TArray1< T > >	pInvDiag

Constructor & Destructor Documentation

template<typename T >

numcxx::TPreconJacobi< T >::TPreconJacobi ( const std::shared_ptr< TSparseMatrix< T >>  pA )

inline

Create Preconditioner.

Create LU factorization class.

Definition at line 7 of file tprecon-jacobi.ixx.

  {
    pInvDiag=std::make_shared<TArray1<T>>(pMatrix->shape(0));
    update(*pMatrix);
  }

template<typename T >

numcxx::TPreconJacobi< T >::TPreconJacobi ( TSparseMatrix< T > &  A )

inline

Definition at line 14 of file tprecon-jacobi.ixx.

  {
    pInvDiag=std::make_shared<TArray1<T>>(A.shape(0));
    update(A);
  }

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template<typename T>

numcxx::TPreconJacobi< T >::~TPreconJacobi ( )

inline

Definition at line 26 of file tprecon-jacobi.hxx.

{};

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Member Function Documentation

template<typename T >

std::shared_ptr< TPreconJacobi< T > > numcxx::TPreconJacobi< T >::create ( const std::shared_ptr< TSparseMatrix< T >>  pA )

inlinestatic

Create preconditioner.

Create LU factorization class.

Definition at line 23 of file tprecon-jacobi.ixx.

  {
    return std::make_shared<TPreconJacobi<T>>(pA);
  }

template<typename T >

void numcxx::TPreconJacobi< T >::update ( TSparseMatrix< T > &  A )

inline

Perform actual computation preconditioner.

Perform actual computation of LU factorization.

Definition at line 30 of file tprecon-jacobi.ixx.

  {
    int n=M.shape(0);
    assert(n==pInvDiag->size());
    auto &InvDiag=*pInvDiag;
    for (int i=0;i<n;i++)
      InvDiag(i)=1.0/M(i,i);

   M.pattern_changed(false);
  }

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template<typename T >

void numcxx::TPreconJacobi< T >::solve ( TArray< T > &  Sol, const TArray< T > &  Rhs  ) const

inlinevirtual

Solve preconditioning system.

Solve LU factorized system.

Reimplemented from numcxx::TLinSolver< T >.

Definition at line 43 of file tprecon-jacobi.ixx.

  {
    Sol.resize(Rhs.size());
    int n=pInvDiag->size();
    auto &InvDiag=*pInvDiag;
    for (int i=0;i<n;i++)
      Sol(i)=Rhs(i)*InvDiag(i);
  }

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template<typename T >

virtual void numcxx::TLinSolver< T >::update ( void  )

inlinevirtualinherited

Reimplemented in numcxx::TSolverUMFPACK< T >, and numcxx::TSolverLapackLU< T >.

Definition at line 280 of file tarray.hxx.

{};

Member Data Documentation

template<typename T>

std::shared_ptr< TArray1<T> > numcxx::TPreconJacobi< T >::pInvDiag

Definition at line 20 of file tprecon-jacobi.hxx.

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

• tprecon-jacobi.hxx
• tprecon-jacobi.ixx