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Mathieu functions
- From: Lowell Johnson <ldj at host-245-233-220-24 dot midco dot net>
- To: gsl-discuss at sources dot redhat dot com
- Date: Sun, 11 Aug 2002 11:12:35 -0500 (CDT)
- Subject: Mathieu functions
I noticed that Mathieu functions are on the task list. Whoa! I thought I
was the only one who cared about those creatures! Does anyone actually
use these, or is this just part of the process of computing everything
listed in Abramowitz & Stegun? ;)
Well, I developed Fortran versions of the angular and radial Mathieu
functions (complex arguments) as part of my thesis back around '90. So I
suppose I can dust off the old code, convert it to C, and align it with
the GSL coding standards. I'm not sure how quickly I'll get this all
done, so if someone wants to take my (practically uncommented) Fortran
and do the conversion, let me know. Otherwise, I'll pick away at it as
time allows.
The complex radial Mathieu functions are functions of the complex Bessel
and Hankel functions. Does the GSL compute complex Bessel functions? If
not, then I'll just get the real-argument versions working.
So, let me know if anyone has a head-start on the Mathieu functions. As I
said, I am willing to just hand over the Fortran (which is by no means
pretty). Otherwise, I'll get to work on them.
Lowell
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Lowell D. Johnson
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