Secant algorithm, simplified version of Newton method, which does not require the derivative at every step.

See the GSL manual for more information

Definition at line 159 of file RootFinderAlgorithms.h.

Public Member Functions
	Secant ()

virtual	~Secant ()

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

virtual	~GSLRootFinderDeriv ()

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)

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

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

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

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

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

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

Public Member Functions inherited from ROOT::Math::IRootFinderMethod
virtual	~IRootFinderMethod ()
	Default Destructor. More...

	IRootFinderMethod ()
	Default Constructor. More...

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

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

typedef void(*	GSLFdFPointer )(double, void , double , double *)

Protected Member Functions inherited from ROOT::Math::GSLRootFinderDeriv
void	SetSolver (GSLRootFdFSolver *s)

void	FreeSolver ()