Steffenson method, providing the fastes convergence.

See the GSL manual for more information

Definition at line 178 of file RootFinderAlgorithms.h.

Public Member Functions
	Steffenson ()

virtual	~Steffenson ()

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

virtual	~GSLRootFinderDeriv ()

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

int	Iterations () const
	Return number of iterations. More...

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

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

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

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)
	Find the root (return false if failed) More...

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

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

virtual	~IRootFinderMethod ()
	Default Destructor. More...

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

Private Member Functions
	Steffenson (const Steffenson &)

Steffenson &	operator= (const Steffenson &)

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)