Numerical Integration

Classes for numerical integration of functions.

These classes provide algorithms for integration of one-dimensional functions, with several adaptive and non-adaptive methods and for integration of multi-dimensional function using an adaptive method or MonteCarlo Integration (GSLMCIntegrator). The basic classes ROOT::Math::IntegratorOneDim provides a common interface for the one-dimensional methods while the class ROOT::Math::IntegratorMultiDim provides the interface for the multi-dimensional ones. The methods can be configured (e.g setting the default method with its defult parameters) using the ROOT::Math::IntegratorOneDimOptions and ROOT::Math::IntegratorMultiDimOptions classes.

Modules
	Numerical Monte Carlo Integration Classes
	Classes implementing method for Monte Carlo Integration.

Classes
class	ROOT::Math::AdaptiveIntegratorMultiDim
	Class for adaptive quadrature integration in multi-dimensions using rectangular regions. More...
class	ROOT::Math::BaseIntegratorOptions
	Base class for Numerical integration options common in 1D and multi-dimension This is an internal class and is not supposed to be instantiated by the user. More...
class	ROOT::Math::GaussIntegrator
	User class for performing function integration. More...
class	ROOT::Math::GaussLegendreIntegrator
	User class for performing function integration. More...
class	ROOT::Math::GSLIntegrator
	Class for performing numerical integration of a function in one dimension. More...
class	ROOT::Math::IntegratorMultiDim
	User class for performing multidimensional integration. More...
class	ROOT::Math::IntegratorMultiDimOptions
	Numerical multi dimensional integration options. More...
class	ROOT::Math::IntegratorOneDim
	User Class for performing numerical integration of a function in one dimension. More...
class	ROOT::Math::IntegratorOneDimOptions
	Numerical one dimensional integration options. More...
class	ROOT::Math::VirtualIntegrator
	Abstract class for all numerical integration methods (1D and multi-dim) Interface defining the common methods for the numerical integrator classes of one and multi dimensions The derived class VirtualIntegratorOneDim defines the methods for one-dimensional integration. More...
class	ROOT::Math::VirtualIntegratorMultiDim
	Interface (abstract) class for multi numerical integration It must be implemented by the concrete Integrator classes like ROOT::Math::GSLMCIntegrator. More...
class	ROOT::Math::VirtualIntegratorOneDim
	Interface (abstract) class for 1D numerical integration It must be implemented by the concrate Integrator classes like ROOT::Math::GSLIntegrator. More...

Enumerations
enum	ROOT::Math::Integration::GKRule {   ROOT::Math::Integration::kGAUSS15 = 1 , ROOT::Math::Integration::kGAUSS21 = 2 , ROOT::Math::Integration::kGAUSS31 = 3 , ROOT::Math::Integration::kGAUSS41 = 4 ,   ROOT::Math::Integration::kGAUSS51 = 5 , ROOT::Math::Integration::kGAUSS61 = 6 }
	enumeration specifying the Gauss-KronRod integration rule for ADAPTIVE integration type More...
enum	ROOT::Math::IntegrationOneDim::Type {   ROOT::Math::IntegrationOneDim::kDEFAULT = -1 , ROOT::Math::IntegrationOneDim::kGAUSS , ROOT::Math::IntegrationOneDim::kLEGENDRE , ROOT::Math::IntegrationOneDim::kADAPTIVE ,   ROOT::Math::IntegrationOneDim::kADAPTIVESINGULAR , ROOT::Math::IntegrationOneDim::kNONADAPTIVE }
	enumeration specifying the integration types. More...

Enumeration Type Documentation

GKRule

enum ROOT::Math::Integration::GKRule

enumeration specifying the Gauss-KronRod integration rule for ADAPTIVE integration type

Enumerator
kGAUSS15
kGAUSS21
kGAUSS31
kGAUSS41
kGAUSS51
kGAUSS61

Definition at line 58 of file IntegrationTypes.h.

Type

enum ROOT::Math::IntegrationOneDim::Type

enumeration specifying the integration types.

• kDEFAULT: default type specifiend in the static options
• kGAUSS: simple Gauss integration method with fixed rule
• kLEGENDRE: Gauss-Legendre integration
• kNONADAPTIVE : to be used for smooth functions
• kADAPTIVE : to be used for general functions without singularities.
• kADAPTIVESINGULAR: default adaptive integration type which can be used in the case of the presence of singularities.

Enumerator
kDEFAULT
kGAUSS
kLEGENDRE
kADAPTIVE
kADAPTIVESINGULAR
kNONADAPTIVE

Definition at line 45 of file AllIntegrationTypes.h.