Steven D'Aprano added the comment: On Sun, Aug 14, 2016 at 12:05:37PM +0000, Mark Dickinson wrote: > But I don't think there's a real problem here so long as you don't > have an expectation of getting super-accurate (e.g., correctly rounded > or faithfully rounded) results; testing that results are accurate to > within 10 ulps or so is probably good enough.
Thanks for the advice Mark. This has certainly showed my naivety when it comes to floating point :-( I thought IEEE 754 was supposed to put an end to these sorts of cross- platform differences. If this was a trig function, I wouldn't have been so surprised, but I was not expecting pow() to differ like this. Once I started getting exact results on my machine, I thought everyone would see the same thing. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue27761> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
