Re: [ROOT] problems with TMinuit::mnexcm

From: Rene Brun (Rene.Brun@cern.ch)
Date: Tue Apr 20 2004 - 15:19:04 MEST


I do not see any problems wityh this example ($ROOTSYS/tutorials/Ifit.C)
Could you tell us very precisely what you are doing/executing?

Rene Brun

Belen Salvachua Ferrando wrote:
> 
> Hello!
> 
>    I'm trying to use the TMinuit library, first I tried with the example
> in the web:   http://root.cern.ch/root/HowtoFit.html
> in the sub section Fitting in general using the class TMinuit. But when
> the program arrives to the command line:
> 
>  gMinuit <http://root.cern.ch/root/html/TMinuit.html>->mnexcm <http://root.cern.ch/root/html/TMinuit.html#TMinuit:mnexcm>("MIGRAD", arglist ,2,ierflg);
> 
>  I get :
> 
>  **********
>  **    2 **MIGRAD         500           1
>  **********
>  FIRST CALL TO USER FUNCTION AT NEW START POINT, WITH IFLAG=4.
> 
>  *** Break *** segmentation violation
> Abort (core dumped)
> 
> The ROOT version I'm using is: v3.05.05
> and the compile version : rh73_gcc2952
> 
> Am I doing something wrong?
> 
> Thanks and regards
>    Belen.



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