Dune::LDL< BCRSMatrix< FieldMatrix< T, n, m >, A > > Class Template Reference

The LDL direct sparse solver for matrices of type BCRSMatrix. More...

#include <dune/istl/ldl.hh>

Public Types
typedef Dune::BCRSMatrix< FieldMatrix< T, n, m >, A >	Matrix
	The matrix type.
typedef Dune::ColCompMatrix< Matrix >	LDLMatrix
	The corresponding SuperLU Matrix type.
typedef ColCompMatrixInitializer< BCRSMatrix< FieldMatrix< T, n, m >, A > >	MatrixInitializer
	Type of an associated initializer class.
typedef Dune::BlockVector< FieldVector< T, m >, typename std::allocator_traits< A >::template rebind_alloc< FieldVector< T, m > > >	domain_type
	The type of the domain of the solver.
typedef Dune::BlockVector< FieldVector< T, n >, typename std::allocator_traits< A >::template rebind_alloc< FieldVector< T, n > > >	range_type
	The type of the range of the solver.
typedef X::field_type	field_type
	The field type of the operator.
typedef FieldTraits< field_type >::real_type	real_type
	The real type of the field type (is the same if using real numbers, but differs for std::complex)
typedef Simd::Scalar< real_type >	scalar_real_type
	scalar type underlying the field_type

Public Member Functions
virtual SolverCategory::Category	category () const
	Category of the solver (see SolverCategory::Category)
	LDL (const Matrix &matrix, int verbose=0)
	Construct a solver object from a BCRSMatrix. More...
	LDL (const Matrix &matrix, int verbose, bool)
	Constructor for compatibility with SuperLU standard constructor. More...
	LDL ()
	Default constructor.
virtual	~LDL ()
	Default constructor.
virtual void	apply (domain_type &x, range_type &b, InverseOperatorResult &res)
	Apply inverse operator,. More...
virtual void	apply (domain_type &x, range_type &b, double reduction, InverseOperatorResult &res)
	apply inverse operator, with given convergence criteria. More...
void	apply (T *x, T *b)
	Additional apply method with c-arrays in analogy to superlu. More...
void	setMatrix (const Matrix &matrix)
	Initialize data from given matrix.
void	setVerbosity (int v)
	Sets the verbosity level for the solver. More...
LDLMatrix &	getInternalMatrix ()
	Return the column compress matrix. More...
void	free ()
	Free allocated space. More...
const char *	name ()
	Get method name.
double *	getD ()
	Get factorization diagonal matrix D. More...
int *	getLp ()
	Get factorization Lp. More...
int *	getLi ()
	Get factorization Li. More...
double *	getLx ()
	Get factorization Lx. More...
virtual void	apply (BlockVector< FieldVector< T, m >, std::allocator_traits< A >::template rebind_alloc< FieldVector< T, m > > > &x, BlockVector< FieldVector< T, n >, std::allocator_traits< A >::template rebind_alloc< FieldVector< T, n > > > &b, InverseOperatorResult &res)=0
	Apply inverse operator,. More...
virtual void	apply (BlockVector< FieldVector< T, m >, std::allocator_traits< A >::template rebind_alloc< FieldVector< T, m > > > &x, BlockVector< FieldVector< T, n >, std::allocator_traits< A >::template rebind_alloc< FieldVector< T, n > > > &b, double reduction, InverseOperatorResult &res)=0
	apply inverse operator, with given convergence criteria. More...

Protected Member Functions
void	printHeader (std::ostream &s) const
	helper function for printing header of solver output
void	printOutput (std::ostream &s, const CountType &iter, const DataType &norm, const DataType &norm_old) const
	helper function for printing solver output
void	printOutput (std::ostream &s, const CountType &iter, const DataType &norm) const
	helper function for printing solver output

Detailed Description

template<typename T, typename A, int n, int m>
class Dune::LDL< BCRSMatrix< FieldMatrix< T, n, m >, A > >

The LDL direct sparse solver for matrices of type BCRSMatrix.

Specialization for the Dune::BCRSMatrix. LDL will always go double precision.

Template Parameters

T	Number type. Only double is supported
A	STL-compatible allocator type
n	Number of rows in a matrix block
m	Number of columns in a matrix block

Note

This will only work if dune-istl has been configured to use LDL

Member Function Documentation

apply() [1/2]

virtual void Dune::InverseOperator< BlockVector< FieldVector< T, m >, std::allocator_traits< A >::template rebind_alloc< FieldVector< T, m > > > , BlockVector< FieldVector< T, n >, std::allocator_traits< A >::template rebind_alloc< FieldVector< T, n > > > >::apply ( BlockVector< FieldVector< T, m >, std::allocator_traits< A >::template rebind_alloc< FieldVector< T, m > > > &  x, BlockVector< FieldVector< T, n >, std::allocator_traits< A >::template rebind_alloc< FieldVector< T, n > > > &  b, double  reduction, InverseOperatorResult &  res  )

pure virtualinherited

apply inverse operator, with given convergence criteria.

Warning

Right hand side b may be overwritten!

Parameters

x	The left hand side to store the result in.
b	The right hand side
reduction	The minimum defect reduction to achieve.
res	Object to store the statistics about applying the operator.

Exceptions

SolverAbort

When the solver detects a problem and cannot continue

apply() [2/2]

virtual void Dune::InverseOperator< BlockVector< FieldVector< T, m >, std::allocator_traits< A >::template rebind_alloc< FieldVector< T, m > > > , BlockVector< FieldVector< T, n >, std::allocator_traits< A >::template rebind_alloc< FieldVector< T, n > > > >::apply ( BlockVector< FieldVector< T, m >, std::allocator_traits< A >::template rebind_alloc< FieldVector< T, m > > > &  x, BlockVector< FieldVector< T, n >, std::allocator_traits< A >::template rebind_alloc< FieldVector< T, n > > > &  b, InverseOperatorResult &  res  )

pure virtualinherited

Apply inverse operator,.

Warning

Note: right hand side b may be overwritten!

Parameters

x	The left hand side to store the result in.
b	The right hand side
res	Object to store the statistics about applying the operator.

Exceptions

SolverAbort

When the solver detects a problem and cannot continue

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

• dune/istl/ldl.hh