On Sunday, May 19, 2013 10:36:18 AM UTC+1, vdelecroix wrote: > If we want to round down the > expression "- expr" then we should round up "expr" and then take the > opposite.
If you care about errors then you should be evaluating the symbolic expressions with interval arithmetic. Your proposal is just to do interval arithmetic and then take the upper/lower bound as desired. That would be correct, but there should also be a way to evaluate symbolic expressions *quickly* without doing interval arithmetic. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
