ECL? was ..Re: Runtime determination of share directories?
Subject: ECL? was ..Re: Runtime determination of share directories?
From: Dieter Kaiser
Date: Fri, 23 Jan 2009 22:43:04 +0100
Am Freitag, den 23.01.2009, 16:17 -0500 schrieb Raymond Toy:
> Michael Abshoff wrote:
> > Mhhh, maybe I did not name the right package? I am referring to the
> > recent work of Dieter Kaiser implementing more special functions and I
> > do recall him increasing the number of bits used internally for some
> > computations to ensure identical results on various lisps.
> >
> There was some discussion about the gamma function, but I think
> increasing the number of bits wasn't actually done.
> As far as I know, the bigfloat implementations of the special functions
> are truly identical.
We have added four digits to fpprec for the calculation of the Gamma
function in bigfloat and complex bigfloat precision. We have done that
to increase the precsion of the algorithm itself. There were no problems
with different Lisps.
Yes, the numerical algorithm for the implemented special functions in
float or bigfloat precison are identical.
Dieter Kaiser