RooOsipDisc Class Reference

#include <RooOsipDisc.hh>

List of all members.

Public Member Functions
	RooOsipDisc (const char *name, const char *title, RooAbsReal &_x, RooAbsReal &_r, RooAbsReal &_b, RooAbsReal &_a, RooAbsReal &_h, RooAbsReal &_s)
	RooOsipDisc (const RooOsipDisc &other, const char *name=0)
virtual TObject *	clone (const char *newname) const
virtual	~RooOsipDisc ()
Int_t	getAnalyticalIntegral (RooArgSet &allVars, RooArgSet &analVars, const char *rangeName=0) const
Double_t	analyticalIntegral (Int_t code, const char *rangeName=0) const
Int_t	getGenerator (const RooArgSet &directVars, RooArgSet &generateVars, Bool_t staticInitOK=kTRUE) const
void	generateEvent (Int_t code)
Protected Member Functions
Double_t	evaluate () const
Protected Attributes
RooRealProxy	x
RooRealProxy	r
RooRealProxy	bb
RooRealProxy	a
RooRealProxy	h
RooRealProxy	s

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Detailed Description

Definition at line 24 of file RooOsipDisc.hh.

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Constructor & Destructor Documentation

RooOsipDisc::RooOsipDisc	(	const char *	name,
		const char *	title,
		RooAbsReal &	_x,
		RooAbsReal &	_r,
		RooAbsReal &	_b,
		RooAbsReal &	_a,
		RooAbsReal &	_h,
		RooAbsReal &	_s
	)

Referenced by clone().

RooOsipDisc::RooOsipDisc	(	const RooOsipDisc &	other,
		const char *	name = 0
	)

Definition at line 31 of file RooOsipDisc.cc.

                                                                   : 
  RooAbsPdf(other,name), x("x",this,other.x), r("r",this,other.r),
  bb("b",this,other.bb),a("a",this,other.a),h("h",this,other.h),s("s",this,other.s)
{
}

virtual RooOsipDisc::~RooOsipDisc

(

)

[inline, virtual]

Definition at line 30 of file RooOsipDisc.hh.

{ }

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Member Function Documentation

Double_t RooOsipDisc::analyticalIntegral	(	Int_t	code,
		const char *	rangeName = 0
	)			const

Definition at line 57 of file RooOsipDisc.cc.

References a, bb, h, r, and s.

{
  assert(code==1) ;

  const Double_t rootPiBy2 = sqrt(TMath::PiOver2());
  Double_t t = -(2*a*r+3*bb*r*r+4*s*r*r*r)*h*h/(1+a*r*r+bb*r*r*r+s*r*r*r*r);
  Double_t d = (1+a*r*r+bb*r*r*r+s*r*r*r*r)*exp(t*t/(2*h*h));
  Double_t xscale = TMath::Sqrt2() * h;

  return  r+a*r*r*r/3+bb*r*r*r*r/4+s*r*r*r*r*r/5+d*rootPiBy2*h*(TMath::Erf((1-r+t)/xscale)-TMath::Erf(t/xscale)); 
}

virtual TObject* RooOsipDisc::clone

(

const char *

newname

)

const [inline, virtual]

Definition at line 29 of file RooOsipDisc.hh.

References RooOsipDisc().

{ return new RooOsipDisc(*this,newname); }

Double_t RooOsipDisc::evaluate

(

)

const [protected]

Definition at line 38 of file RooOsipDisc.cc.

References a, bb, h, r, s, and x.

{
  Double_t t = -(2*a*r+3*bb*r*r+4*s*r*r*r)*h*h/(1+a*r*r+bb*r*r*r+s*r*r*r*r);
  Double_t d = (1+a*r*r+bb*r*r*r+s*r*r*r*r)*exp(t*t/(2*h*h));
  if (x<r) {
    return 1+a*x*x+bb*x*x*x+s*x*x*x*x;
  }
  if ((x>r)||(x==r)) {
  return d*exp(-0.5*(x-r+t)*(x-r+t)/(h*h));
  }
  return 0;
}

void RooOsipDisc::generateEvent

(

Int_t

code

)

Definition at line 75 of file RooOsipDisc.cc.

References x.

{
  assert(code==1) ;
  Double_t xgen ;
  while(1) {    
    xgen = 0.5; //RooRandom::randomGenerator()->OsipDisc(r,bb,a,h,s);
    if (xgen<x.max() && xgen>x.min()) {
      x = xgen ;
      break;
    }
  }
  return;
}

Int_t RooOsipDisc::getAnalyticalIntegral	(	RooArgSet &	allVars,
		RooArgSet &	analVars,
		const char *	rangeName = 0
	)			const

Definition at line 51 of file RooOsipDisc.cc.

References x.

{
  if (matchArgs(allVars,analVars,x)) return 1 ;
  return 0 ;
}

Int_t RooOsipDisc::getGenerator	(	const RooArgSet &	directVars,
		RooArgSet &	generateVars,
		Bool_t	staticInitOK = kTRUE
	)			const

Definition at line 69 of file RooOsipDisc.cc.

References x.

{
  if (matchArgs(directVars,generateVars,x)) return 1 ;  
  return 0 ;
}

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Member Data Documentation

RooRealProxy RooOsipDisc::a [protected]

Definition at line 43 of file RooOsipDisc.hh.

Referenced by analyticalIntegral(), and evaluate().

RooRealProxy RooOsipDisc::bb [protected]

Definition at line 42 of file RooOsipDisc.hh.

Referenced by analyticalIntegral(), and evaluate().

RooRealProxy RooOsipDisc::h [protected]

Definition at line 44 of file RooOsipDisc.hh.

Referenced by analyticalIntegral(), and evaluate().

RooRealProxy RooOsipDisc::r [protected]

Definition at line 41 of file RooOsipDisc.hh.

Referenced by analyticalIntegral(), and evaluate().

RooRealProxy RooOsipDisc::s [protected]

Definition at line 45 of file RooOsipDisc.hh.

Referenced by analyticalIntegral(), and evaluate().

RooRealProxy RooOsipDisc::x [protected]

Definition at line 40 of file RooOsipDisc.hh.

Referenced by evaluate(), generateEvent(), getAnalyticalIntegral(), and getGenerator().

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

• RooOsipDisc.hh
• RooOsipDisc.cc

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