Re: TMinuit

Rene Brun (Rene.Brun@cern.ch)
Tue, 16 Feb 1999 08:57:21 +0000

Jeff Patterson wrote:
>
> Hello Rootworld,
>
> I have instances of the TMinuit class in my analysis, and
> they were all working, giving me good minimizations, until over the
> weekend, I started getting this error message whenever I execute the
> "MIGRAD" command.
>
> Error: G__CallFunc::SetArgArray() must be initialized with
> 'G__CallFunc::SetFunc(G__ClassInfo* cls,char* fname,char* args,long*
> poffset)' first
>
> I haven't changes anything purposely. It seems that this problem just
> started on it's own. There is a possibility I might have accidently
> altered the code before this started happeing but I don't think so.
>
> Does anybody know exactly what this error message means, and what could be
> it's source.
>

Hi Jeff,
In such situations, you should always understand the differences between
your current version and your latest working version.
This kind of message can happen if you have a wrong calling sequence
when you call SetFCN or you create a TF1 object with the wrong
prototype.
You should provide more useful information.

Rene Brun