Bug in floating-point addition: is anyone else seeing this?

[Dave Parker]

On May 21, 3:41 pm, "Chris Mellon" <arka... at gmail.com> wrote:
> When told why you got different results (an answer you
> probably already knew, if you know enough about IEEE to do the
> auto-conversion you alluded to) ...

Of course I know a lot about IEEE, but you are assuming that I also
know a lot about Python, which I don't.  I assumed Python was doing
the auto-conversion, too, because I had heard that Python supported
arbitrary precision math.  Jerry Hill explained that you had to load a
separate package to do it.

> you treated it as another opportunity
> to (not very subtly) imply that Python was doing the wrong thing.

This person who started this thread posted the calculations showing
that Python was doing the wrong thing, and filed a bug report on it.

If someone pointed out a similar problem in Flaming Thunder, I would
agree that Flaming Thunder was doing the wrong thing.

I would fix the problem a lot faster, though, within hours if
possible.  Apparently this particular bug has been lurking on Bugzilla
since 2003: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=323