Dear developpers,

Does you use this reference to compute Spherical Bessel Functions for real argument?

Accurate recursive generation of spherical Bessel and Neumann functions for a large range of indices
E. Gillman1and H. R. Fiebig Comput. Phys. 2, 62 (1988);

2) is there a way to speed up the computation of j_nu(x) if one wants 10 digits accuracy for instance?

Best regards