Re: Adding c functions into gnuplot

[Daniel S. <dan...@ie...>]

emilio <emilio38 <at> yahoo.com> writes:

> 
> 
> Hello everbody,
> 
> I need to use some functions of the GSL library (Jacobi functions) as a
> builtin function of gnuplot.
> 
> Do anyone know if there exists an easy way to define a new function
> that couldn't be express as a combination of elementary operations?

What exactly is it that you need emilio?  Elliptical functions?  Theta function?
 sn(), cn(), dn()?  I'm wondering if this function couldn't simply be added to
the list of special functions.  This paper

www.jucs.org/jucs_4_1/reliable_computation_of_elliptic/Luther_W.pdf

has an arithmetic-geometric mean algorithm I was going to try.  However, I then
noticed that Andras Pal added some elliptical functions fairly recently.  Type
"help elliptic" for info.  Is that what you are looking for?

Dan