Hello, There is something wrong
sage: bool(RR(pi) == pi) True sage: bool(RR(golden_ratio) == golden_ratio) True which is fine to me. You coerce to the field with less precision. But sage: bool(RR(sqrt(2)) == sqrt(2)) False sage: sqrt(2).n() == RR(sqrt(2)) True sage: RR(sqrt(2)) == CC(sqrt(2)) False which is very wrong. Vincent 2015-02-26 9:41 UTC+01:00, Ralf Stephan <gtrw...@gmail.com>: > Hi, > > with current Sage, > sage: bool(sqrt(2)==CC(sqrt(2))) > False > > You would expect that this leads to > sage: sqrt(2) in CC > False > but due to a bug I'm fixing atm in #12967 this returns True. > However, now that it's fixed I'm faced with the question if > answer to both really should be False. If one doctest in parent.py > is right both should be True. But how could Sage see that equation > holds if > sage: CC(sqrt(2)) > 1.41421356237309 > sage: sqrt(2).n() > 1.41421356237310 > so either there is a bug in SR+CC or the abovementioned doctest > is wromg. > > What do you think? > > Regards, > > -- > 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. > For more options, visit https://groups.google.com/d/optout. > -- 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. For more options, visit https://groups.google.com/d/optout.
