NAME
        IEEEDPLog10 -- compute logarithm base 10 of a number

   SYNOPSIS
          x   = IEEEDPLog10(  y  );
        d0/d1               d0/d1

        double  x,y;

   FUNCTION
        Compute the logarithm base 10 of y in IEEE double precision

   INPUTS
        y - IEEE double precision floating point value

   RESULT
        x - IEEE double precision floating point value

   BUGS

   SEE ALSO
        ieeedplog()