int CFit(VKalVrtControl *FitCONTROL, int ifCovV0, int NTRK, long int *ich, double xyz0[3], double(*par0)[3], double(*inp_Trk5)[5], double(*inp_CovTrk5)[15], double xyzfit[3], double(*parfs)[3], double ptot[4], double covf[21], double &chi2, double *chi2tr)