On Sunday, January 8, 2017 at 9:14:15 AM UTC+1, Emmanuel Charpentier wrote: > > Le dimanche 8 janvier 2017 08:48:33 UTC+1, Ralf Stephan a écrit : >> >> You mean doing floating point computations to determine if an >> expression is real? >> > > Aaarghh.. >
That was tongue in cheek, sorry. Actually the cos case can be implemented easily, similarly to what we have done with sage: log(pi/7).is_real() True Let's just ask, which functions result in any irreal with real argument, not many I guess. -- 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 https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
