[R-390] Slide rule calculations

[Gord Hayward]

>  You may get answers "accurate" to 12 or more decimal places,  but you 
> can't get more digits of precision out than you enter.

In my experience, being wrong to 12 decimal places is bad.  You wouldn't 
believe how many times I see that.
Cheers, Gord.

-- 

Gordon L. Hayward, Ph.D., P.Eng.,
Associate Professor, Biological Engineering,
School of Engineering, University of Guelph,
Guelph, Ontario, N1G 2W1.