Dawson Dawson_sub Erf Erfc Erfci Erfci_sub Erfi Erfi_sub Fresc Fresc_sub Fress Fress_sub

Fresc_sub() Sub Fresc_sub ( Ret As  Double, X As  Double, Optional Info As  Long  ) Fresnel integral C(x) (Subroutine version) Purpose Computes the Fresnel integral C(x). C(x) = ∫cos(π/2 t^2) dt [0, x] Parameters [out] Ret Fresnel integral C(x). [in] X Argument x. [out] Info (Optional) = 0: Successful exit. = 1: Floating point range error.