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Re: Bessel Functions and Numerical Recipes

Brian Keating wrote:

> Anyone have a robust algorithm to compute ordinary
> Bessel Functions of integer order, greater than order ~ 19
> (where IDL 5.4 currently cuts off).

I don't think it exists yet.  Mati Meron wrote what looks to be a good routine
for K-Bessel functions of arbitrary order, but not a BeselJ replacement.