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

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