Re: [Bug-gsl] lmder

[Brian Gough]

Butel Rémi writes:
 > 
 > I discovered with interest the existence of GSL,
 > and started to use it for optimisation problems I have to solve. > 
 > The version used is 1.4
 > 
 > I am sorry, I found 4 bugs which doesnt seem to be in the GSL-database.
 > I'm unfortunatly unable to send you the contexts in which they appears,
 > but I can send the corrections done to the sources to work around them.

Thanks for the bug reports.

I will take a look at the check for fnorm==0 and non-zero status.

Regarding SIGFPE and overflow maybe you can turn off the exception
with GSL_IEEE_MODE environment variable (see the manual for details)
or rescale your function?  

Ideally I'd want to avoid arbitrary limits like 1e+150 in the code.
Checks for +-Inf would be reasonable though.

-- 
Brian Gough