pub(super) fn spherical_radial<const N: usize>(
l: i32,
k: Jet<N>,
r: [Jet<N>; 3],
eta: Complex,
) -> Jet<N>Expand description
The radial integral shared by all spherical orders of one degree at a point. Used only above the small-split cancellation regime, where the integral does not depend on the harmonic’s rounding budget.