Hi Michael, > You are using CDF == Complex Double Field, so numerical noise is to be > expected. IEEE arithmetic might be fast, but you pay for that speed > with imprecise results. It might be possible to compile without > optimization and get a "correct" result in that case, but that could > change by using another gcc release.
OK, but if you write it this way it may be clearer what I mean: sage: i^2 -1 sage: CDF(_) -1.0 + 1.22460635382e-16*I namely that the result of i^2 should be exact, if I want performance I could write i^2. Georg --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
