[Gretl-users] Re: Problem with "invcdf()" and "critical()"
On Mon, Sep 4, 2023 at 4:44 AM Sven Schreiber
<sven.schreiber(a)fu-berlin.de> wrote:
Am 04.09.2023 um 10:33 schrieb f.valentini(a)pm.univpm.it:
> Dear all,
>
> I would like to report a possible bug in the functions invcdf() and critical().
>
> gretl (2023b, Linux) slows down and crashes (after a while) when I run the commands
below.
> <hansl>
> scalar aa = invcdf(X,1,1)
> </hansl>
Confirmed on Windows with 2023b (couldn't test with the latest snapshot
right now) - actually I got a freeze and didn't wait for an eventual crash.
This is potentially a bit of a nasty bug, I guess, since it's a standard
statistical calculation. I wonder when this crept in.
It has always been there. It seems that the underlying cephes code
goes into a fatal loop in cases such as this where the correct answer
is + or - infinity. A fix should be available before long.
Allin