TEKFun Class Reference

#include <TEKFun.h>

List of all members.

Public Member Functions
	TEKFun ()
	TEKFun (const double &th)
	~TEKFun ()
void	Init ()
void	Init (const double &)
double	kfun (const double &)
double	Eval (const double &x)
double	Eval (const double &z1, const double &z2, const double &c)
Protected Attributes
double	fxmin
double	fxmax
TRadSpline *	fk

---

Detailed Description

Definition at line 7 of file TEKFun.h.

---

Constructor & Destructor Documentation

TEKFun::TEKFun

(

)

Definition at line 37 of file TEKFun.C.

References fk, Init(), and kjr.

              {
  fk = NULL;
  kjr = this;
  Init();
}

TEKFun::TEKFun

(

const double &

th

)

Definition at line 58 of file TEKFun.C.

References fk, Init(), and kjr.

                                 {
  fk = NULL;
  kjr = this;
  Init(theta);
}

TEKFun::~TEKFun

(

)

Definition at line 64 of file TEKFun.C.

References fk.

               {
  delete fk;
}

---

Member Function Documentation

double TEKFun::Eval	(	const double &	z1,
		const double &	z2,
		const double &	c
	)			[inline]

Definition at line 21 of file TEKFun.h.

References Eval(), and v.

                                                                         {
    double v  = (z1-z2)/(z1+z2);
    double cs = (c-v)/(1-c*v);
    //    std::cout<<"KKK "<<z1<<" "<<z2<<" "<<c<<" "<<cs<<std::endl;
    return Eval(cs);
  }

double TEKFun::Eval

(

const double &

x

)

[inline]

Definition at line 20 of file TEKFun.h.

References TRadSpline::Eval(), and fk.

Referenced by Eval(), and TEPCrossPart::GetValue().

{return fk->Eval(x);}

void TEKFun::Init

(

const double &

)

Definition at line 47 of file TEKFun.C.

References cos(), fk, fxmax, fxmin, and tkfun().

                                    {
  fxmin = -cos(theta);
  fxmax = cos(theta);
  //  TF1 fkfun("kfun",tkfun,fxmin,fxmax,0);
  if(fk) delete fk;
  //  TFile f("kfun.root","RECREATE");
  fk    = new TRadSpline3("k", fxmin, fxmax, tkfun, 10001);
  //  fk->Write();
  //  fk->SetDirectory(0);
}

void TEKFun::Init

(

)

Definition at line 43 of file TEKFun.C.

References TRadGlobal::Get_ThetaMin(), and gGlobal.

Referenced by TEPCrossPart::Init(), and TEKFun().

                 {
  Init(gGlobal->Get_ThetaMin());
}

double TEKFun::kfun

(

const double &

)

Definition at line 7 of file TEKFun.C.

References TLi2::Eval(), gConst, and TConstants::Pi2().

Referenced by tkfun().

                                   {
  double sa  = sqrt((1.-co)*0.5);
  double sa2 = sa*sa;
  double ca  = sqrt((1.+co)*0.5);
  double ca2 = ca*ca;
  double c1  = log(sa);
  double c2  = log(ca);
  double co2 = co*co;
  double co3 = co2*co;
  double co4 = co2*co2;
  double k = -1. + 2.*TLi2::Eval(ca2) - 2.*TLi2::Eval(sa2)+ 
    (gConst->Pi2()/3.*(2.*co4 - 3.*co3 - 15.*co) + 
     2*(2*co4 - 3*co3 + 9*co2 + 3*co + 21.)*(c1*c1) -
     4.*(co4 + co2 - 2.*co)*c2*c2 - 
     4.*(co3 + 4.*co2 + 5.*co + 6.)*(c1-c2)*(c1-c2) +
     2.*(co3 - 3.*co2 + 7.*co - 5.)*c2 +
     2.*(3.*co3 + 9.*co2 + 5.*co + 31.)*c1)/((3.+co2)*(3.+co2));
  return k;
}

---

Member Data Documentation

TRadSpline* TEKFun::fk [protected]

Definition at line 12 of file TEKFun.h.

Referenced by Eval(), Init(), TEKFun(), and ~TEKFun().

double TEKFun::fxmax [protected]

Definition at line 10 of file TEKFun.h.

Referenced by Init().

double TEKFun::fxmin [protected]

Definition at line 9 of file TEKFun.h.

Referenced by Init().

---