Celli1 Celli1_sub Celli2 Celli2_sub Celli3 Celli3_sub Elli1 Elli1_sub Elli2 Elli2_sub Elli3 Elli3_sub Hlambda Hlambda_sub Jzeta Jzeta_sub Rc Rc_sub Rd Rd_sub Rf Rf_sub Rg Rg_sub Rj Rj_sub

Rg_sub() Sub Rg_sub ( Ret As  Double, X As  Double, Y As  Double, Z As  Double, Optional Info As  Long  ) Carlson form of elliptic integral RG(x, y, z) (Subroutine version) Purpose Computes the Carlson form of elliptic integral RG(x, y, z). RG(x, y, z) = (1/4π) * ∫∫√(x sin^2θ cos^2φ + y sin^2θ sin^2φ + z cos^2θ) sinθ dθdφ [θ: 0, π] [φ: 0, 2π] Parameters [out] Ret Carlson form of elliptic integral RG(x, y, z). [in] X Argument x. (X >= 0) [in] Y Argument y. (Y >= 0) [in] Z Argument z. (Z >= 0) [out] Info (Optional) = 0: Successful exit. = -1: The argument X had an illegal value. (X < 0) = -2: The argument Y had an illegal value. (Y < 0) = -3: The argument Z had an illegal value. (Z < 0) = 1: Floating point range error. Reference boost/math/special_functions