Steffenson method, providing the fastes convergence.

See the GSL manual for more information

Definition at line 147 of file RootFinderAlgorithms.h.

Public Member Functions
	Steffenson ()

	~Steffenson () override

Public Member Functions inherited from ROOT::Math::GSLRootFinderDeriv
	GSLRootFinderDeriv ()

	GSLRootFinderDeriv (const GSLRootFinderDeriv &)=delete

	GSLRootFinderDeriv (GSLRootFinderDeriv &&)=delete

	~GSLRootFinderDeriv () override

int	Iterate () override
	iterate (return GSL_SUCCESS in case of successful iteration)

int	Iterations () const override
	Return number of iterations.

const char *	Name () const override
	Return name of root finder algorithm.

GSLRootFinderDeriv &	operator= (const GSLRootFinderDeriv &)=delete

GSLRootFinderDeriv &	operator= (GSLRootFinderDeriv &&)=delete

double	Root () const override
	Returns the previously calculated root.

bool	SetFunction (const IGradFunction &f, double xstart) override
	Sets the function for algorithms using derivatives.

virtual bool	SetFunction (const ROOT::Math::IGenFunction &, double, double)
	Sets the function for the rest of the algorithms.

virtual bool	SetFunction (const ROOT::Math::IGradFunction &, double)
	Sets the function for algorithms using derivatives.

bool	SetFunction (GSLFuncPointer f, GSLFuncPointer df, GSLFdFPointer fdf, void *p, double Root)

bool	Solve (int maxIter=100, double absTol=1E-8, double relTol=1E-10) override
	Find the root (return false if failed)

int	Status () const override
	Return the status of last root finding.

Public Member Functions inherited from ROOT::Math::IRootFinderMethod
	IRootFinderMethod ()
	Default Constructor.

virtual	~IRootFinderMethod ()
	Default Destructor.

Additional Inherited Members
Public Types inherited from ROOT::Math::GSLRootFinderDeriv
typedef void(*	GSLFdFPointer) (double, void , double , double *)

typedef double(*	GSLFuncPointer) (double, void *)

Protected Member Functions inherited from ROOT::Math::GSLRootFinderDeriv
void	FreeSolver ()

void	SetSolver (GSLRootFdFSolver *s)