number of m values within a band l
number of l values required to have given number of coefficients
get SH basis function with linear index - fast for i < 25
get SH basis function with given index - fast for l < 5
get SH basis function with given indices l, m - fast for l < 5
direct calculation of SH basis function, only for l < 5 (c++ nostalgia version)
direction calculation of Spherical Harmonics basis function
total number of functions when using expansions with l bands
(Since version ) see corresponding Javadoc for more information.
service functions for real spherical harmonics