Definition at line 40 of file NumericalDerivator.h.

Public Member Functions
	NumericalDerivator (bool always_exactly_mimic_minuit2=true)
	NumericalDerivator (const NumericalDerivator &other)
	NumericalDerivator (double step_tolerance, double grad_tolerance, unsigned int ncycles, double error_level, bool always_exactly_mimic_minuit2=true)
bool	AlwaysExactlyMimicMinuit2 () const
std::vector< DerivatorElement >	Differentiate (unsigned int nDim, const FCNBase function, const double x, std::span< const ROOT::Fit::ParameterSettings > parameters, std::span< const DerivatorElement > previous_gradient)
double	DInt2Ext (const ROOT::Fit::ParameterSettings &parameter, double val) const
double	Ext2int (const ROOT::Fit::ParameterSettings &parameter, double val) const
DerivatorElement	FastPartialDerivative (const FCNBase *function, std::span< const ROOT::Fit::ParameterSettings > parameters, unsigned int i_component, const DerivatorElement &previous)
double	GetValue () const
double	Int2ext (const ROOT::Fit::ParameterSettings &parameter, double val) const
DerivatorElement	operator() (unsigned int nDim, const FCNBase function, const double x, std::span< const ROOT::Fit::ParameterSettings > parameters, unsigned int i_component, const DerivatorElement &previous)
DerivatorElement	PartialDerivative (unsigned int nDim, const FCNBase function, const double x, std::span< const ROOT::Fit::ParameterSettings > parameters, unsigned int i_component, DerivatorElement previous)
void	SetAlwaysExactlyMimicMinuit2 (bool flag)
void	SetErrorLevel (double value)
void	SetGradTolerance (double value)
void	SetInitialGradient (std::span< const ROOT::Fit::ParameterSettings > parameters, std::vector< DerivatorElement > &gradient)
	This function was not implemented as in Minuit2.
void	SetNCycles (unsigned int value)
void	SetStepTolerance (double value)
void	SetupDifferentiate (unsigned int nDim, const FCNBase function, const double cx, std::span< const ROOT::Fit::ParameterSettings > parameters)
	This function sets internal state based on input parameters.

Private Attributes
bool	fAlwaysExactlyMimicMinuit2
double	fDfmin
ROOT::Minuit2::SinParameterTransformation	fDoubleLimTrafo
double	fGradTolerance = 0.1
ROOT::Minuit2::SqrtLowParameterTransformation	fLowerLimTrafo
unsigned int	fNCycles = 2
ROOT::Minuit2::MnMachinePrecision	fPrecision
double	fStepTolerance = 0.5
double	fUp = 1
ROOT::Minuit2::SqrtUpParameterTransformation	fUpperLimTrafo
double	fVal = 0
double	fVrysml
std::vector< double >	fVx
std::vector< double >	fVxExternal
std::vector< double >	fVxFValCache

#include <Minuit2/NumericalDerivator.h>

Constructor & Destructor Documentation

◆ NumericalDerivator() [1/3]

NumericalDerivator::NumericalDerivator ( bool always_exactly_mimic_minuit2 = true )

explicit

Definition at line 39 of file NumericalDerivator.cxx.

◆ NumericalDerivator() [2/3]

NumericalDerivator::NumericalDerivator ( const NumericalDerivator & other )

default

◆ NumericalDerivator() [3/3]

NumericalDerivator::NumericalDerivator	(	double	step_tolerance,
		double	grad_tolerance,
		unsigned int	ncycles,
		double	error_level,
		bool	always_exactly_mimic_minuit2 = true )

Definition at line 44 of file NumericalDerivator.cxx.

Member Function Documentation

◆ AlwaysExactlyMimicMinuit2()

bool ROOT::Minuit2::NumericalDerivator::AlwaysExactlyMimicMinuit2 ( ) const

inline

Definition at line 76 of file NumericalDerivator.h.

◆ Differentiate()

std::vector< DerivatorElement > NumericalDerivator::Differentiate	(	unsigned int	nDim,
		const FCNBase *	function,
		const double *	x,
		std::span< const ROOT::Fit::ParameterSettings >	parameters,
		std::span< const DerivatorElement >	previous_gradient )

Definition at line 153 of file NumericalDerivator.cxx.

◆ DInt2Ext()

double NumericalDerivator::DInt2Ext	(	const ROOT::Fit::ParameterSettings &	parameter,
		double	val ) const

Definition at line 202 of file NumericalDerivator.cxx.

◆ Ext2int()

double NumericalDerivator::Ext2int	(	const ROOT::Fit::ParameterSettings &	parameter,
		double	val ) const

Definition at line 185 of file NumericalDerivator.cxx.

◆ FastPartialDerivative()

DerivatorElement NumericalDerivator::FastPartialDerivative	(	const FCNBase *	function,
		std::span< const ROOT::Fit::ParameterSettings >	parameters,
		unsigned int	i_component,
		const DerivatorElement &	previous )

Definition at line 91 of file NumericalDerivator.cxx.

◆ GetValue()

double ROOT::Minuit2::NumericalDerivator::GetValue ( ) const

inline

Definition at line 63 of file NumericalDerivator.h.

◆ Int2ext()

double NumericalDerivator::Int2ext	(	const ROOT::Fit::ParameterSettings &	parameter,
		double	val ) const

Definition at line 169 of file NumericalDerivator.cxx.

◆ operator()()

DerivatorElement NumericalDerivator::operator()	(	unsigned int	nDim,
		const FCNBase *	function,
		const double *	x,
		std::span< const ROOT::Fit::ParameterSettings >	parameters,
		unsigned int	i_component,
		const DerivatorElement &	previous )

Definition at line 145 of file NumericalDerivator.cxx.

◆ PartialDerivative()

DerivatorElement NumericalDerivator::PartialDerivative	(	unsigned int	nDim,
		const FCNBase *	function,
		const double *	x,
		std::span< const ROOT::Fit::ParameterSettings >	parameters,
		unsigned int	i_component,
		DerivatorElement	previous )

Definition at line 82 of file NumericalDerivator.cxx.

◆ SetAlwaysExactlyMimicMinuit2()

void ROOT::Minuit2::NumericalDerivator::SetAlwaysExactlyMimicMinuit2 ( bool flag )

inline

Definition at line 77 of file NumericalDerivator.h.

◆ SetErrorLevel()

void ROOT::Minuit2::NumericalDerivator::SetErrorLevel ( double value )

inline

Definition at line 67 of file NumericalDerivator.h.

◆ SetGradTolerance()

void ROOT::Minuit2::NumericalDerivator::SetGradTolerance ( double value )

inline

Definition at line 65 of file NumericalDerivator.h.

◆ SetInitialGradient()

void NumericalDerivator::SetInitialGradient	(	std::span< const ROOT::Fit::ParameterSettings >	parameters,
		std::vector< DerivatorElement > &	gradient )

This function was not implemented as in Minuit2.

Now it copies the behavior of InitialGradientCalculator. See https://github.com/roofit-dev/root/issues/10

Definition at line 224 of file NumericalDerivator.cxx.

◆ SetNCycles()

void ROOT::Minuit2::NumericalDerivator::SetNCycles ( unsigned int value )

inline

Definition at line 66 of file NumericalDerivator.h.

◆ SetStepTolerance()

void ROOT::Minuit2::NumericalDerivator::SetStepTolerance ( double value )

inline

Definition at line 64 of file NumericalDerivator.h.

◆ SetupDifferentiate()

void NumericalDerivator::SetupDifferentiate	(	unsigned int	nDim,
		const FCNBase *	function,
		const double *	cx,
		std::span< const ROOT::Fit::ParameterSettings >	parameters )

This function sets internal state based on input parameters.

This state setup is used in the actual (partial) derivative calculations.

Definition at line 58 of file NumericalDerivator.cxx.

Member Data Documentation

◆ fAlwaysExactlyMimicMinuit2

bool ROOT::Minuit2::NumericalDerivator::fAlwaysExactlyMimicMinuit2

private

Definition at line 100 of file NumericalDerivator.h.

◆ fDfmin

double ROOT::Minuit2::NumericalDerivator::fDfmin

private

Definition at line 88 of file NumericalDerivator.h.

◆ fDoubleLimTrafo

ROOT::Minuit2::SinParameterTransformation ROOT::Minuit2::NumericalDerivator::fDoubleLimTrafo

private

Definition at line 95 of file NumericalDerivator.h.

◆ fGradTolerance

double ROOT::Minuit2::NumericalDerivator::fGradTolerance = 0.1

private

Definition at line 81 of file NumericalDerivator.h.

◆ fLowerLimTrafo

ROOT::Minuit2::SqrtLowParameterTransformation ROOT::Minuit2::NumericalDerivator::fLowerLimTrafo

private

Definition at line 97 of file NumericalDerivator.h.

◆ fNCycles

unsigned int ROOT::Minuit2::NumericalDerivator::fNCycles = 2

private

Definition at line 99 of file NumericalDerivator.h.

◆ fPrecision

ROOT::Minuit2::MnMachinePrecision ROOT::Minuit2::NumericalDerivator::fPrecision

private

Definition at line 93 of file NumericalDerivator.h.

◆ fStepTolerance

double ROOT::Minuit2::NumericalDerivator::fStepTolerance = 0.5

private

Definition at line 80 of file NumericalDerivator.h.

◆ fUp

double ROOT::Minuit2::NumericalDerivator::fUp = 1

private

Definition at line 82 of file NumericalDerivator.h.

◆ fUpperLimTrafo

ROOT::Minuit2::SqrtUpParameterTransformation ROOT::Minuit2::NumericalDerivator::fUpperLimTrafo

private

Definition at line 96 of file NumericalDerivator.h.

◆ fVal

double ROOT::Minuit2::NumericalDerivator::fVal = 0

private

Definition at line 83 of file NumericalDerivator.h.

◆ fVrysml

double ROOT::Minuit2::NumericalDerivator::fVrysml

private

Definition at line 89 of file NumericalDerivator.h.

◆ fVx

std::vector<double> ROOT::Minuit2::NumericalDerivator::fVx

private

Definition at line 85 of file NumericalDerivator.h.

◆ fVxExternal

std::vector<double> ROOT::Minuit2::NumericalDerivator::fVxExternal

private

Definition at line 86 of file NumericalDerivator.h.

◆ fVxFValCache

std::vector<double> ROOT::Minuit2::NumericalDerivator::fVxFValCache

private

Definition at line 87 of file NumericalDerivator.h.

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

math/minuit2/inc/Minuit2/NumericalDerivator.h
math/minuit2/src/NumericalDerivator.cxx

Public Member Functions

Private Attributes

Constructor & Destructor Documentation

◆ NumericalDerivator() [1/3]

◆ NumericalDerivator() [2/3]

◆ NumericalDerivator() [3/3]

Member Function Documentation

◆ AlwaysExactlyMimicMinuit2()

◆ Differentiate()

◆ DInt2Ext()

◆ Ext2int()

◆ FastPartialDerivative()

◆ GetValue()

◆ Int2ext()

◆ operator()()

◆ PartialDerivative()

◆ SetAlwaysExactlyMimicMinuit2()

◆ SetErrorLevel()

◆ SetGradTolerance()

◆ SetInitialGradient()

◆ SetNCycles()

◆ SetStepTolerance()

◆ SetupDifferentiate()

Member Data Documentation

◆ fAlwaysExactlyMimicMinuit2

◆ fDfmin

◆ fDoubleLimTrafo

◆ fGradTolerance

◆ fLowerLimTrafo

◆ fNCycles

◆ fPrecision

◆ fStepTolerance

◆ fUp

◆ fUpperLimTrafo

◆ fVal

◆ fVrysml

◆ fVx

◆ fVxExternal

◆ fVxFValCache