Acos Acosh Asin Asinh Atan2 Atanh Cosh Cospi Cospi_sub Exp2 Exp2_sub Expm1 Expm1_sub Log10 Log1p Log1p_sub Log2 Log2_sub Powm1 Powm1_sub Sinh Sinpi Sinpi_sub Sqrt1pm1 Sqrt1pm1_sub Tanh

Log1p_sub() Sub Log1p_sub ( Ret As  Double, X As  Double, Optional Info As  Long  ) ln(1 + x) (Subroutine version) Purpose Computes ln(1 + x). It may be more accurate than using Log(1 + X) when x is near 0. Parameters [out] Ret ln(1 + x). [in] X Argument x. (X > -1) [out] Info (Optional) = 0: Successful exit. = -1: The argument X had an illegal value. (X < -1) = 1: Floating point range error.