From: Carl Hansen (hansen@hansen.best.vwh.net)
Date: Sat May 25 2002 - 21:32:05 MDT
On Mon, May 20, 2002 at 07:25:58AM -0700, Charles Hixson wrote:
> On Sunday 19 May 2002 09:20 pm, you wrote:
snip
> >
> > GNU: How many of you are using GNU software? I need to find
> > some arbitrary precision arithmetic software to chase ever-closer-
> > to-perfect odd numbers. Currently I am at the precision limit of
> > microsloth excel, which is about 15 decimal digits. Alejandro
> > is using bc, which is a GNU product, open source, which I
> > find very appealing.
> >
> > Can anyone suggest an alternative? I need about 30 decimal
> > digits precision. spike
snip
>
> There's another choice along this same line that I do know is working, but
I
> can't remember it's name either. Again, it's a player in the area
pioneered
> by Mathematica. It is mainly aimed at number theorists, but also does
> physics. And it runs on several different platforms. (Linux, Windows,
and
> Mac, at least.) I think that it's basically text based, but it can
certainly
> generate fancy graphs of functions. Also that it comes out of France.
I've
> never used it. It may not be GPL licensed, but it's free (as in "free
beer")
> (which GPL doesn't guarantee).
Charles, you mean pari-gp
http://www.parigp-home.de/
definitely GPL
includes a scriptable, interactive calculator, and library; link
to your C code. Or use Perl interface. Math::Pari from cpan.
Only partially competes with Mathematica, it's stated goal is speed.
Unlimited precision.
Should be more famous than it is.
Another alternative is the big number functions that are part of
openssl
www.openssl.org
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