Bessel functions?

[Dave Cottingham]

As I am in need of some Bessel functions, I picked up the latest
contrib archive of special functions from the very handy site
http://www.tsc.uvigo.es/GTS/Octave/oct_arch.html.  However, I cannot
get besselj to work.  It relies on functions j0 and j1, which are not
present in either octave 1.1.1 or 2.0, and which I can't find anywhere
in the contrib archive.  Does anybody know how to get this to work?

Thanks,
Dave Cottingham