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 155 of file RootFinderAlgorithms.h.

Public Member Functions
	Secant ()

	~Secant () override

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

	~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.

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)

Inheritance diagram for ROOT::Math::Roots::Secant:

Constructor & Destructor Documentation

◆ Secant() [1/2]

ROOT::Math::Roots::Secant::Secant ( )

Definition at line 160 of file RootFinderAlgorithms.cxx.

ROOT::Math::Roots::Secant::~Secant ( )

override

Definition at line 167 of file RootFinderAlgorithms.cxx.

ROOT::Math::Roots::Secant::Secant ( const Secant & )

private

Definition at line 173 of file RootFinderAlgorithms.cxx.

Secant & ROOT::Math::Roots::Secant::operator= ( const Secant & rhs )

private

Definition at line 178 of file RootFinderAlgorithms.cxx.

Libraries for ROOT::Math::Roots::Secant:

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