TUnuranContDist

Function Members (Methods)

public:

	TUnuranContDist(const TUnuranContDist&)
	TUnuranContDist(TF1* pdf = 0, TF1* deriv = 0, bool isLogPdf = false)
virtual	~TUnuranContDist()
double	Cdf(double x) const
static TClass*	Class()
virtual TUnuranContDist*	Clone() const
double	DPdf(double x) const
bool	GetDomain(double& xmin, double& xmax) const
bool	HasCdf() const
bool	HasMode() const
bool	HasPdfArea() const
virtual TClass*	IsA() const
bool	IsLogPdf() const
double	Mode() const
TUnuranContDist&	operator=(const TUnuranContDist& rhs)
double	Pdf(double x) const
double	PdfArea() const
void	SetCdf(TF1* cdf)
void	SetDomain(double xmin, double xmax)
void	SetMode(double mode)
void	SetPdfArea(double area)
virtual void	ShowMembers(TMemberInspector& insp, char* parent)
virtual void	Streamer(TBuffer& b)
void	StreamerNVirtual(TBuffer& b)

private:

double	fArea	area below pdf
TF1*	fCdf	pointer to the cdf
TF1*	fDPdf	pointer to the derivative of the pdf
bool	fHasArea	flag to control if distribution has a pre-computed area below the pdf
bool	fHasDomain	flag to control if distribution has a defined domain (otherwise is [-inf,+inf]
bool	fHasMode	flag to control if distribution has a pre-computed mode
bool	fIsLogPdf	flag to control if function pointer represent log of pdf
double	fMode	mode of the distribution
TF1*	fPdf	pointer to the pdf
double	fX[1]	! cached vector for using TF1::EvalPar
double	fXmax	upper value of the domain
double	fXmin	lower value of the domain

Class Charts

Function documentation

TUnuranContDist(TF1* pdf = 0, TF1* deriv = 0, bool isLogPdf = false)

 Constructor from a TF1 objects
  passed as non-const because EvalPar and InitArgs are non-const methods

 Implementation of copy constructor (copy just the pointer )

double DPdf(double x) const

 evaluate the derivative of the pdf
 if derivative function is not given is evaluated numerically

      Destructor (no operations)

{}

      Clone (required by base class)

{ return new TUnuranContDist(*this); }

void SetCdf(TF1* cdf)

      set cdf distribution. If a method requires it
      and is not set it is then estimated using numerical
      integration from the pdf

{ fCdf = cdf; }

void SetDomain(double xmin, double xmax)

      Set the distribution domain. If min < max a domain is defined otherwise is undefined

void SetMode(double mode)

      set the distribution mode (x position of its maximum)

{ fMode = mode; fHasMode=true;}

void SetPdfArea(double area)

      set the area below the pdf

{ fArea = area; fHasArea=true;}

bool GetDomain(double& xmin, double& xmax) const

      check if distribution has a defined domain and return in case its domain

bool HasCdf()

      check if a cdf fucntion is provided for the distribution

{ return fCdf != 0; }

bool HasMode()

      check if distribution has a pre-computed mode

{ return fHasMode; }

      check if distribution has a pre-computed area below the Pdf

{ return fHasArea; }

double Mode()

      return the mode   (x location of  maximum of the pdf)

{ return fMode; }

double PdfArea()

      return area below the pdf

{ return fArea; }

bool IsLogPdf()

      flag to control if given function represent the log of a pdf

{ return fIsLogPdf; }