testMinim.cxx File Reference

#include "Math/Minimizer.h"
#include "Math/Factory.h"
#include "TVirtualFitter.h"
#include "Math/IFunction.h"
#include "Math/Util.h"
#include <cmath>
#include <cassert>
#include <string>
#include <iostream>
#include "TStopwatch.h"
#include "TMatrixD.h"
#include "TVectorD.h"
#include "TRandom3.h"
#include "TMath.h"

Go to the source code of this file.

Classes
class	RosenBrockFunction
class	TrigoFletcherFunction
class	ChebyQuadFunction
Typedefs
typedef void(*)	FCN (Int_t &npar, Double_t *gin, Double_t &f, Double_t *u, Int_t flag)
Functions
void	RosenBrock (Int_t &, Double_t *, Double_t &f, Double_t *par, Int_t)
const double *	TrueMinimum (const ROOT::Math::IMultiGenFunction &func)
void	printMinimum (const std::vector< double > &x)
int	DoNewMinimization (const ROOT::Math::IMultiGenFunction &func, const double *x0, const double *s0, ROOT::Math::Minimizer *min, double &minval, double &edm, double *minx)
int	DoOldMinimization (FCN func, TVirtualFitter *min, double &minval, double &edm)
int	testNewMinimizer (const ROOT::Math::IMultiGenFunction &func, const double *x0, const double *s0, const std::string &minimizer, const std::string &algoType)
int	testOldMinimizer (FCN func, const std::string &fitter, int n=25)
int	testRosenBrock ()
int	testTrigoFletcher ()
int	testChebyQuad ()
int	main ()
Variables
int	gNCall = 0
int	gNCall2 = 0
int	gNmin = 1000
int	gVerbose = 0
bool	minos = false
double	gAbsTolerance = 0.001

---

Typedef Documentation

typedef void(*) FCN(Int_t &npar, Double_t *gin, Double_t &f, Double_t *u, Int_t flag)

Definition at line 36 of file testMinim.cxx.

---

Function Documentation

int DoNewMinimization	(	const ROOT::Math::IMultiGenFunction &	func,
		const double *	x0,
		const double *	s0,
		ROOT::Math::Minimizer *	min,
		double &	minval,
		double &	edm,
		double *	minx
	)

Definition at line 395 of file testMinim.cxx.

References copy(), ROOT::Math::eu, ROOT::Math::fabs(), func(), gAbsTolerance, gVerbose, i, min, minos, ok, ROOT::Math::Util::ToString(), TrueMinimum(), and xmin.

Referenced by testNewMinimizer().

int DoOldMinimization	(	FCN	func,
		TVirtualFitter *	min,
		double &	minval,
		double &	edm
	)

Definition at line 461 of file testMinim.cxx.

References TMath::Abs(), gAbsTolerance, gVerbose, min, minos, and ok.

Referenced by testOldMinimizer().

int main

(

void

)

Definition at line 708 of file testMinim.cxx.

References gNmin, gVerbose, and testRosenBrock().

void printMinimum

(

const std::vector< double > &

x

)

Definition at line 381 of file testMinim.cxx.

References i, n, and pr().

Referenced by testNewMinimizer().

void RosenBrock	(	Int_t &	,
		Double_t *	,
		Double_t &	f,
		Double_t *	par,
		Int_t
	)

Definition at line 42 of file testMinim.cxx.

References gNCall, x, and y.

Referenced by RosenBrockFunction::DoEval(), NumericalMinimization(), RunRosenBrock(), testGAMinimizer(), and testRosenBrock().

int testChebyQuad

(

)

Definition at line 652 of file testMinim.cxx.

References func(), gNmin, max, n, testNewMinimizer(), x0, and x1.

Referenced by main().

int testNewMinimizer	(	const ROOT::Math::IMultiGenFunction &	func,
		const double *	x0,
		const double *	s0,
		const std::string &	minimizer,
		const std::string &	algoType
	)

Definition at line 505 of file testMinim.cxx.

References ROOT::Math::Factory::CreateMinimizer(), DoNewMinimization(), func(), gNCall, gNCall2, gNmin, i, min, pr(), printMinimum(), w, and xmin.

Referenced by testChebyQuad(), testPowell(), testQuadFunc(), testRosenBrock(), testTrigoFletcher(), and testWood().

int testOldMinimizer	(	FCN	func,
		const std::string &	fitter,
		int	n = 25
	)

Definition at line 557 of file testMinim.cxx.

References DoOldMinimization(), TVirtualFitter::Fitter(), gNCall, gNmin, i, min, n, pr(), TVirtualFitter::SetDefaultFitter(), and w.

Referenced by testRosenBrock().

int testRosenBrock

(

)

Definition at line 590 of file testMinim.cxx.

References gNmin, RosenBrock(), testNewMinimizer(), and testOldMinimizer().

Referenced by main().

int testTrigoFletcher

(

)

Definition at line 622 of file testMinim.cxx.

References gNmin, TrigoFletcherFunction::StartPoints(), and testNewMinimizer().

Referenced by main().

const double* TrueMinimum

(

const ROOT::Math::IMultiGenFunction &

func

)

Definition at line 370 of file testMinim.cxx.

References func(), RosenBrockFunction::TrueMinimum(), and TrigoFletcherFunction::TrueMinimum().

Referenced by DoNewMinimization().

---

Variable Documentation

double gAbsTolerance = 0.001

Definition at line 32 of file testMinim.cxx.

int gNCall = 0

Definition at line 24 of file testMinim.cxx.

Referenced by TrigoFletcherFunction::DoEval(), RosenBrockFunction::DoEval(), ChebyQuadFunction::DoEval(), DoNewMinimization(), PowellFunction(), RosenBrock(), SimpleQuadFunction(), testNewMinimizer(), testOldMinimizer(), and WoodFunction().

int gNCall2 = 0

Definition at line 25 of file testMinim.cxx.

Referenced by ChebyQuadFunction::Gradient(), TrigoFletcherFunction::Gradient(), and testNewMinimizer().

int gNmin = 1000

Definition at line 26 of file testMinim.cxx.

Referenced by main(), testChebyQuad(), testNewMinimizer(), testOldMinimizer(), testPowell(), testQuadFunc(), testRosenBrock(), testTrigoFletcher(), and testWood().

int gVerbose = 0

Definition at line 27 of file testMinim.cxx.

bool minos = false

Definition at line 30 of file testMinim.cxx.

Referenced by RooAbsReal::chi2FitDriver(), ROOT::Minuit2::MnContours::Contour(), DoNewMinimization(), DoOldMinimization(), TFitterMinuit::ExecuteCommand(), RooAbsPdf::fitTo(), G__G__RooFitCore2_168_0_10(), G__G__RooFitCore2_168_0_11(), G__G__RooFitCore3_831_0_10(), G__G__RooFitCore3_831_0_11(), and ROOT::Minuit2::Minuit2Minimizer::GetMinosError().

---