Function trv::calc_coupling_coeff_2pt#
Defined in File twopt.cpp
Function Documentation#
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double trv::calc_coupling_coeff_2pt(int ell, int ELL, int m, int M)#
Calculate the coupling coefficient for spherical-harmonic components of full two-point statistics.
The calculated quantity is
\[ (2\ell + 1) (2L + 1) W(\ell, 0, L; m, 0, M) \,. \]- Parameters
ell, ELL, m, M – Wigner 3-j components.
- Returns
Coupling coefficient for spherical-harmonic components in two-point statistics.