class AliCaloFastAltroFitv0: public TNamed

 Not implemented yet

 Service method for convinience only
 h - hist with altro response, could have empty bin
 and center of bin could be different from bin number

 Reset variables

 Return results of fitting procedure

 Cut right part of altro sample : static function

 Pedestal deduction if ped is positive : static function
 Discard part od samle if it is not compact.

 Static function
 It is case of n=k=2 : fnn = x*x*exp(2 - 2*x)
 Input:
nPoints  - number of points
   t[]   - array of time bins
   y[]   - array of amplitudes after pedestal subtractions;
   sig   - error of amplitude measurement (one value for all channels)
   tau   - filter time response (in timebin units)
 Output:
       amp - amplitude at t0;
      eamp - error of amplitude;
        t0 - time of max amplitude;
       et0 - error of t0;
      chi2 - chi2

 Resolve quadratic equations a*x**2 + b*x + c
printf(" a %12.5e b %12.5e c %12.5e \n", a, b, c);

 Calculate parameters error too - Mar 24,09
 sig is independent from points

 Remember that fmax = exp(-n);
 fmax_nk = (n/k)**n*exp(-n) => n=k=2 => exp(-n) = exp(-2.)

 QA of fitting

 Static Standard Response Function :
 look to Double_t AliEMCALRawUtils::RawResponseFunction(Double_t *x, Double_t *par)
 Using for drawing only.

 Shape of the electronics raw reponse:
 It is a semi-gaussian, 2nd order Gamma function (n=2) of the general form

 t' = (t - t0 + tau) / tau
 F = A * t**N * exp( N * ( 1 - t) )   for t >= 0
 F = 0                                for t < 0

 parameters:
 A:   par[0]   // Amplitude = peak value
 t0:  par[1]
 tau: par[2]
 N:   par[3]
 ped: par[4]