Re: Slaying the HYPOTamus

On Mon, Aug 24, 2009 at 06:59:38PM +0100, Sam Mason wrote:
> > On Mon, Aug 24, 2009 at 11:14:19PM +1000, Paul Matthews wrote:
> > >     if (x == 0.0)
> > >         return 0.0;
> > >     else {
> > >         yx = y/x;
> 
> is preventing a divide by zero on the line above.  So it's not a
> performance hack, it's just allowing it to remain correct as a result of
> changing the maths around.

I've also just realized why it's safe to return zero here; "y" contains
the smaller number and so if "x" is zero, "y" must be zero as well.

--  Sam  http://samason.me.uk/