(** Two electron integral functor for operators that are separable among %{ $(x,y,z)$ %}. It is parameterized by the [zero_m] function. *) open Constants let cutoff = integrals_cutoff module T = struct let name = "F12" let f12_factor = F12factor.gaussian_geminal 1.0 let class_of_contracted_shell_pair_couple ~basis shell_pair_couple = let g = f12_factor.F12factor.gaussian in F12RR.contracted_class_shell_pair_couple ~basis g.GaussianOperator.expo_g_inv g.GaussianOperator.coef_g shell_pair_couple end module M = TwoElectronIntegrals.Make(T) include M