alpha_beta Function

private elemental function alpha_beta(denominator, numerator)

Prodcut of alpha(numerator) * beta(denominator) / alpha(denominator) as needed by the Clenshaw algorithm in ply_split_legendre_matrix.

Arguments

Type	Intent	Optional	Attributes		Name
integer,	intent(in)			::	denominator	Legendre mode for the $\alpha$ in the denominator and the $\beta$.
integer,	intent(in)			::	numerator	Legendre mode for the $\alpha$ in the numerator.

Return Value real(kind=rk)