Description

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>
class ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >

Definition at line 129 of file FitUtil.h.

Collaboration diagram for ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >:

Public Member Functions
	IntegralEvaluator (const ParamFunc &func, const double *p, bool useIntegral=true)

	~IntegralEvaluator ()

double	F1 (double x) const

double	FN (const double *x) const

double	Integral (const double x1, const double x2)

double	operator() (const double x1, const double x2)

void	SetFunction (const ParamFunc &func, const double *p=0)

void	SetParameters (const double *p)

Private Member Functions
	IntegralEvaluator (const IntegralEvaluator &rhs)

template<class T >
double	ExecFunc (T f, const double x, const double *p) const

IntegralEvaluator &	operator= (const IntegralEvaluator &rhs)

Private Attributes
unsigned int	fDim

const ParamFunc *	fFunc

ROOT::Math::IGenFunction *	fFunc1Dim

ROOT::Math::IMultiGenFunction *	fFuncNDim

ROOT::Math::IntegratorOneDim *	fIg1Dim

ROOT::Math::IntegratorMultiDim *	fIgNDim

const double *	fParams

Constructor & Destructor Documentation

◆ IntegralEvaluator() [1/2]

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>

ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::IntegralEvaluator	(	const ParamFunc &	func,
		const double *	p,
		bool	useIntegral = `true`
	)

inline

Definition at line 132 of file FitUtil.h.

         : fDim(0), fParams(0), fFunc(0), fIg1Dim(0), fIgNDim(0), fFunc1Dim(0), fFuncNDim(0)
      {
         if (useIntegral) {
            SetFunction(func, p);
         }
      }

References ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::SetFunction().

Referenced by ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::SetFunction().

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◆ ~IntegralEvaluator()

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>

ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::~IntegralEvaluator ( )

inline

Definition at line 175 of file FitUtil.h.

      {
         if (fIg1Dim)
            delete fIg1Dim;
         if (fIgNDim)
            delete fIgNDim;
         if (fFunc1Dim)
            delete fFunc1Dim;
         if (fFuncNDim)
            delete fFuncNDim;
         // if (fFunc) delete fFunc;
      }

References ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fFunc1Dim, ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fFuncNDim, ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fIg1Dim, and ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fIgNDim.

◆ IntegralEvaluator() [2/2]

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>

ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::IntegralEvaluator ( const IntegralEvaluator< ParamFunc > & rhs )

private

Member Function Documentation

◆ ExecFunc()

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>

template<class T >

double ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::ExecFunc	(	T *	f,
		const double *	x,
		const double *	p
	)		const

inlineprivate

Definition at line 223 of file FitUtil.h.

      {
         return (*f)(x, p);
      }

Referenced by ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::F1(), and ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::FN().

◆ F1()

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>

double ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::F1 ( double x ) const

inline

Definition at line 189 of file FitUtil.h.

      {
         double xx = x;
         return ExecFunc(fFunc, &xx, fParams);
      }

References ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::ExecFunc(), ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fFunc, and ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fParams.

Referenced by ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::SetFunction().

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◆ FN()

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>

double ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::FN ( const double * x ) const

inline

Definition at line 195 of file FitUtil.h.

195 { return ExecFunc(fFunc, x, fParams); }

References ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::ExecFunc(), ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fFunc, and ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fParams.

Referenced by ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::SetFunction().

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◆ Integral()

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>

double ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::Integral	(	const double *	x1,
		const double *	x2
	)

inline

Definition at line 197 of file FitUtil.h.

      {
         // return unormalized integral
         return (fIg1Dim) ? fIg1Dim->Integral(*x1, *x2) : fIgNDim->Integral(x1, x2);
      }

References ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fIg1Dim, and ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fIgNDim.

◆ operator()()

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>

double ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::operator()	(	const double *	x1,
		const double *	x2
	)

inline

Definition at line 203 of file FitUtil.h.

      {
         // return normalized integral, divided by bin volume (dx1*dx...*dxn)
         if (fIg1Dim) {
            double dV = *x2 - *x1;
            return fIg1Dim->Integral(*x1, *x2) / dV;
         } else if (fIgNDim) {
            double dV = 1;
            for (unsigned int i = 0; i < fDim; ++i)
               dV *= (x2[i] - x1[i]);
            return fIgNDim->Integral(x1, x2) / dV;
            //                   std::cout << " do integral btw x " << x1[0] << "  " << x2[0] << " y " << x1[1] << "  "
            //                   << x2[1] << " dV = " << dV << " result = " << result << std::endl; return result;
         } else
            assert(1.); // should never be here
         return 0;
      }

References ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fDim, ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fIg1Dim, and ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fIgNDim.

◆ operator=()

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>

IntegralEvaluator& ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::operator= ( const IntegralEvaluator< ParamFunc > & rhs )

private

◆ SetFunction()

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>

void ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::SetFunction	(	const ParamFunc &	func,
		const double *	p = `0`
	)

inline

Definition at line 140 of file FitUtil.h.

      {
         // set the integrand function and create required wrapper
         // to perform integral in (x) of a generic  f(x,p)
         fParams = p;
         fDim = func.NDim();
         // copy the function object to be able to modify the parameters
         // fFunc = dynamic_cast<ROOT::Math::IParamMultiFunction *>( func.Clone() );
         fFunc = &func;
         assert(fFunc != 0);
         // set parameters in function
         // fFunc->SetParameters(p);
         if (fDim == 1) {
            fFunc1Dim =
               new ROOT::Math::WrappedMemFunction<IntegralEvaluator, double (IntegralEvaluator::*)(double) const>(
                  *this, &IntegralEvaluator::F1);
            fIg1Dim = new ROOT::Math::IntegratorOneDim();
            // fIg1Dim->SetFunction( static_cast<const ROOT::Math::IMultiGenFunction & >(*fFunc),false);
            fIg1Dim->SetFunction(static_cast<const ROOT::Math::IGenFunction &>(*fFunc1Dim));
         } else if (fDim > 1) {
            fFuncNDim =
               new ROOT::Math::WrappedMemMultiFunction<IntegralEvaluator, double (IntegralEvaluator::*)(const double *)
                                                                             const>(*this, &IntegralEvaluator::FN, fDim);
            fIgNDim = new ROOT::Math::IntegratorMultiDim();
            fIgNDim->SetFunction(*fFuncNDim);
         } else
            assert(fDim > 0);
      }

Referenced by ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::IntegralEvaluator().

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◆ SetParameters()

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>

void ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::SetParameters ( const double * p )

inline

Definition at line 169 of file FitUtil.h.

      {
         // copy just the pointer
         fParams = p;
      }

References ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fParams.

Member Data Documentation

◆ fDim

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>

unsigned int ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fDim

private

Definition at line 252 of file FitUtil.h.

Referenced by ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::operator()(), and ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::SetFunction().

◆ fFunc

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>

const ParamFunc* ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fFunc

private

Definition at line 256 of file FitUtil.h.

Referenced by ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::F1(), ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::FN(), and ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::SetFunction().

◆ fFunc1Dim

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>

ROOT::Math::IGenFunction* ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fFunc1Dim

private

Definition at line 259 of file FitUtil.h.

Referenced by ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::~IntegralEvaluator(), and ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::SetFunction().

◆ fFuncNDim

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>

ROOT::Math::IMultiGenFunction* ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fFuncNDim

private

Definition at line 260 of file FitUtil.h.

Referenced by ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::~IntegralEvaluator(), and ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::SetFunction().

◆ fIg1Dim

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>

ROOT::Math::IntegratorOneDim* ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fIg1Dim

private

Definition at line 257 of file FitUtil.h.

Referenced by ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::~IntegralEvaluator(), ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::Integral(), ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::operator()(), and ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::SetFunction().

◆ fIgNDim

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>

ROOT::Math::IntegratorMultiDim* ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fIgNDim

private

Definition at line 258 of file FitUtil.h.

Referenced by ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::~IntegralEvaluator(), ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::Integral(), ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::operator()(), and ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::SetFunction().

◆ fParams

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>

const double* ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::fParams

private

Definition at line 253 of file FitUtil.h.

Referenced by ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::F1(), ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::FN(), ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::SetFunction(), and ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >::SetParameters().

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

/home/build/builds/o5h8MZZm/0/mlz/bornagain/Fit/3rdparty/RootMinimizers/Fit/FitUtil.h

Description

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>> class ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >

Public Member Functions

Private Member Functions

Private Attributes

Constructor & Destructor Documentation

◆ IntegralEvaluator() [1/2]

◆ ~IntegralEvaluator()

◆ IntegralEvaluator() [2/2]

Member Function Documentation

◆ ExecFunc()

◆ F1()

◆ FN()

◆ Integral()

◆ operator()()

◆ operator=()

◆ SetFunction()

◆ SetParameters()

Member Data Documentation

◆ fDim

◆ fFunc

◆ fFunc1Dim

◆ fFuncNDim

◆ fIg1Dim

◆ fIgNDim

◆ fParams

template<class ParamFunc = ROOT::Math::IParamMultiFunctionTempl<double>>
class ROOT::Fit::FitUtil::IntegralEvaluator< ParamFunc >