The links for software to calculate:
- Spherical Bessel functions of complex argument: FORTRAN code for complex argument of jn(z) that has almost machine precision for any reasonable order n and argument modulus |z|.
- Spline interpolation: modern FORTRAN version of old spline interpolation subroutines of Rondall E. Jones and M. K. Gordon (Sandia). Includes derivatives and integrals of the interpolating function.