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

Rf_sub() Sub Rf_sub ( Ret As  Double, X As  Double, Y As  Double, Z As  Double, Optional Info As  Long  ) Carlson form of elliptic integral RF(x, y, z) (Subroutine version) Purpose Computes the Carlson form of elliptic integral RF(x, y, z). RF(x, y, z) = (1/2) * ∫(t + x)^(-1/2)(t + y)^(-1/2)(t + z)^(-1/2) dt [0, ∞] Parameters [out] Ret Carlson form of elliptic integral RF(x, y, z). [in] X Argument x. (X >= 0 (one of X, Y and Z may be zero)) [in] Y Argument y. (Y >= 0 (one of X, Y and Z may be zero)) [in] Z Argument z. (z >= 0 (one of X, Y and Z may be zero)) [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 or more than two out of X, Y and Z are 0) = 1: Floating point range error. Reference boost/math/special_functions