Interface (abstract) class for multi numerical integration It must be implemented by the concrete Integrator classes like ROOT::Math::GSLMCIntegrator.

Plug-in's exist in ROOT to be able to instantiate the derived classes via the plug-in manager. Users should not use directly this class but the concrete classes ROOT::Math::IntegratorMultiDim.

Definition at line 160 of file VirtualIntegrator.h.

Public Member Functions
	~VirtualIntegratorMultiDim () override
	destructor: no operation

virtual double	Integral (const double , const double )=0
	evaluate multi-dim integral

virtual ROOT::Math::IntegratorMultiDimOptions	Options () const =0
	get the option used for the integration implement by derived class otherwise return default ones

virtual void	SetFunction (const IMultiGenFunction &)=0
	setting a multi-dim function

virtual void	SetOptions (const ROOT::Math::IntegratorMultiDimOptions &opt)
	set the options (if needed must be re-implemented by derived classes)

virtual ROOT::Math::IntegrationMultiDim::Type	Type () const
	return type of integrator

Public Member Functions inherited from ROOT::Math::VirtualIntegrator
virtual	~VirtualIntegrator ()
	destructor: no operation

virtual double	Error () const =0
	return the estimate of the absolute Error of the last Integral calculation

virtual int	NEval () const
	return number of function evaluations in calculating the integral (if integrator do not implement this function returns -1)

virtual double	Result () const =0
	return the Result of the last Integral calculation

virtual void	SetAbsTolerance (double)=0
	set the desired absolute Error

virtual void	SetRelTolerance (double)=0
	set the desired relative Error

virtual int	Status () const =0
	return the Error Status of the last Integral calculation