A small Julia package for the evaluation of spherical Bessel functions and Coulomb functions using the approach described in
- Barnett, A. R. (1996). The Calculation of Spherical Bessel and Coulomb Functions. In (Eds.), Computational Atomic Physics (pp. 181–202). Springer Berlin Heidelberg.
The article and accompanying codes (public domain) can be found at http://www.fresco.org.uk/programs/barnett/index.htm
A fix in the rescaling step occurring in the vicinity of roots of the
sinc function was implemented similarly to the suggestion here:
https://github.com/manoharan-lab/holopy/pull/273/files
Alternatives: