Guido van Rossum added the comment: > Correct rounding is a property that needs to be proved, not tested.
I take it your position is that this can never be done 100% correctly so it shouldn't go in? That's disappointing, because the stream of complaints that "round is broken" won't stop (we had two of these in the bug tracker just this month). I really want to address this without having to either change interactive mode to use something besides repr() or changing repr() to drop precision (assuming correctly rounding input). We can fix the roundtripping in marshal and pickle and the like by explicitly using "%.17g" % x instead of repr(x). Scientists who worry about roundtripping can also do this (though are there any scientists who work on platforms that don't have correctly-rounding input routines?). We can also fix it by adopting the Tcl string-to-float code. __________________________________ Tracker <[EMAIL PROTECTED]> <http://bugs.python.org/issue1580> __________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
