scipy/scipy — pull request #3692 by jennystone (2014-05-28 22:55:00+00:00)
Title: ENH: scipy.special: Improving sph_harm function 

The sph_harm function used for calculating spherical harmonic at present is written in Python and it uses the routine lpmn to calculate the required Associated Legendre function. The routine lpmn iteratively evaluates the function for all values <= m,n every time it is passed, the value required by the sph_harm is just that of the function at m and n (and not at