BOSS 8.0.0
BESIII Offline Software System
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TEKFun.h
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1#ifndef RAD_TEKFun
2#define RAD_TEKFun
3
4// #include "TF1.h"
5#include "TRadSpline.h"
6// #include <iostream>
7class TEKFun {
8protected:
9 double fxmin;
10 double fxmax;
11 // TF1 *fkfun;
12 TRadSpline* fk;
13
14public:
15 TEKFun();
16 TEKFun( const double& th );
17 ~TEKFun();
18 void Init();
19 void Init( const double& );
20 double kfun( const double& );
21 inline double Eval( const double& x ) { return fk->Eval( x ); }
22 inline double Eval( const double& z1, const double& z2, const double& c ) {
23 double v = ( z1 - z2 ) / ( z1 + z2 );
24 double cs = ( c - v ) / ( 1 - c * v );
25 // std::cout<<"KKK "<<z1<<" "<<z2<<" "<<c<<" "<<cs<<std::endl;
26 return Eval( cs );
27 }
28};
29
30#endif // #ifndef RAD_TEKFun
v
**********Class see also m_nmax DOUBLE PRECISION m_amel DOUBLE PRECISION m_x2 DOUBLE PRECISION m_alfinv DOUBLE PRECISION m_Xenph INTEGER m_KeyWtm INTEGER m_idyfs DOUBLE PRECISION m_zini DOUBLE PRECISION m_q2 DOUBLE PRECISION m_Wt_KF DOUBLE PRECISION m_WtCut INTEGER m_KFfin *COMMON c_KarLud $ !Input CMS energy[GeV] $ !CMS energy after beam spread beam strahlung[GeV] $ !Beam energy spread[GeV] $ !z boost due to beam spread $ !electron beam mass *ff pair spectrum $ !minimum v
Definition KarLud.h:35
TEKFun::Eval
double Eval(const double &z1, const double &z2, const double &c)
Definition TEKFun.h:22
TEKFun::Init
void Init(const double &)
TEKFun::fk
TRadSpline * fk
Definition TEKFun.h:12
TEKFun::Init
void Init()
TEKFun::Eval
double Eval(const double &x)
Definition TEKFun.h:21
TEKFun::fxmax
double fxmax
Definition TEKFun.h:10
TEKFun::TEKFun
TEKFun(const double &th)
TEKFun::fxmin
double fxmin
Definition TEKFun.h:9
TEKFun::kfun
double kfun(const double &)