On Jul 8, 2:00 pm, Stefan Krah <stefan-use...@bytereef.org> wrote: > > This whole argument is a misunderstanding. Mark and I argue that correct > rounding is quite feasible in practice, you argue that you want guaranteed > execution times and memory usage. This is clear now, but was not so apparent > in the "impossible" paragraph that Mark responded to. No, that's what I'm arguing for, though such a feature is important. I'm pointing out that the feasibility of correct rounding is entirely dependent on what you're doing. For IEEE-754 double, it's feasible for the elementary functions if you can tolerate intermediate calculations that are more than twice as large as your double in the corner cases. Certainly, for a single calculation, this is acceptable, but at how many calculations is it no longer acceptable?
Adam -- http://mail.python.org/mailman/listinfo/python-list
