Dune::Geneo::CGSolverFork< X > Class Template Reference

conjugate gradient method More...

#include <dune/composites/Driver/Solvers/geneo/cg_fork.hh>

Public Types
typedef X	domain_type
	The domain type of the operator to be inverted.
typedef X	range_type
	The range type of the operator to be inverted.
typedef X::field_type	field_type
	The field type of the operator to be inverted.
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)

Public Member Functions
template<class L , class P >
	CGSolverFork (L &op, P &prec, real_type reduction, int maxit, int verbose)
	Set up conjugate gradient solver. More...
template<class L , class S , class P >
	CGSolverFork (L &op, S &sp, P &prec, real_type reduction, int maxit, int verbose)
	Set up conjugate gradient solver. More...
virtual void	apply (X &x, X &b, InverseOperatorResult &res)
	Apply inverse operator. More...
virtual void	apply (X &x, X &b, double reduction, InverseOperatorResult &res)
	Apply inverse operator with given reduction factor. More...

Detailed Description

template<class X>
class Dune::Geneo::CGSolverFork< X >

conjugate gradient method

Constructor & Destructor Documentation

CGSolverFork() [1/2]

template<class X >

template<class L , class P >

Dune::Geneo::CGSolverFork< X >::CGSolverFork ( L &  op, P &  prec, real_type  reduction, int  maxit, int  verbose  )

inline

Set up conjugate gradient solver.

CGSolverFork() [2/2]

template<class X >

template<class L , class S , class P >

Dune::Geneo::CGSolverFork< X >::CGSolverFork ( L &  op, S &  sp, P &  prec, real_type  reduction, int  maxit, int  verbose  )

inline

Set up conjugate gradient solver.

Member Function Documentation

apply() [1/2]

template<class X >

virtual void Dune::Geneo::CGSolverFork< X >::apply ( X &  x, X &  b, double  reduction, InverseOperatorResult &  res  )

inlinevirtual

Apply inverse operator with given reduction factor.

Note

Currently, the CGSolver aborts when a NaN or infinite defect is detected. However, -ffinite-math-only (implied by -ffast-math) can inhibit a result from becoming NaN that really should be NaN. E.g. numeric_limits<double>::quiet_NaN()*0.0==0.0 with gcc-5.3 -ffast-math.

apply() [2/2]

template<class X >

virtual void Dune::Geneo::CGSolverFork< X >::apply ( X &  x, X &  b, InverseOperatorResult &  res  )

inlinevirtual

Apply inverse operator.

Note

Currently, the CGSolver aborts when a NaN or infinite defect is detected. However, -ffinite-math-only (implied by -ffast-math) can inhibit a result from becoming NaN that really should be NaN. E.g. numeric_limits<double>::quiet_NaN()*0.0==0.0 with gcc-5.3 -ffast-math.

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

• dune/composites/Driver/Solvers/geneo/cg_fork.hh