pub(crate) fn terms(
to: Mode,
from: Mode,
helicity: bool,
) -> Vec<(i32, i32, Complex)>Expand description
Terms (p, m - mu, weight) of the translation from source (l, m) to destination
(lambda, mu): sum weight z_p(k r) P_p^(m - mu) e^(i (m - mu) phi).