class RtRelation
{
public:
double rmin,rmax;
double* Rt(double * x, double* par);
}
RtRelation* rtrelation = new RtRelation;
TF1* rt = new TF1("rt",rtrelation->Rt,
rtrelation->rmin,rtrelation->rmax,0);
If it is possible, how should I do it ?
Regards, thanks, Wouter