    over the entire complex number range, and produce accurate values even at the
      extremes of that range, where as a naive formula would cause overflow or underflow
      to occur during the calculation, even though the result is actually a representable
      value. The maximum theoretical relative error for all of these functions is
      less than 9.5&#949; for every machine-representable point in the complex plane. Please
      refer to comments in the header files themselves and to the above ment