On May 7, 2009, at 4:45 PM, William Stein wrote:
> > On Thu, May 7, 2009 at 3:25 PM, Robert Bradshaw > <rober...@math.washington.edu> wrote: >> >> On May 7, 2009, at 4:10 AM, Mike Hansen wrote: >> >>> Hello all, >>> >>> I've been doing a lot of work recent trying to get the new symbolics >>> ready for Sage 4.0. With 4.0 due out in 8 days, we're trying to do >>> the final push. >>> >>> There are currently a lot of printing errors since Pynac/GiNaC >>> prints >>> expressions differently than Maxima does. Some things still need >>> doctests, and there are a few small features left to implement. If >>> you have some free time in the next few days and want to help out, >>> it'd be greatly appreciated. >>> >>> If you want to try the code out, there is an spkg and two patches in >>> http://sage.math.washington.edu/home/mhansen/symbolics/. These >>> should >>> install and apply cleanly to Sage 3.4.2. >>> >>> I'll try to be around in IRC most of the day tomorrow. Sometime >>> during >>> the day or evening, we'll set up a public notebook for people to try >>> things out and try to break things. >> >> I just noticed >> >> sage: sqrt(x)^2 >> x >> >> sage: sqrt(2)^2 >> sqrt(2)^2 >> > > OK, that's definitely a bug. By the way, testing this in Ginac > directly is useful, which anybody can do by typing ginsh on sage.math: > > wst...@sage:~$ ginsh > ginsh - GiNaC Interactive Shell (ginac V1.4.1) > ... >> sqrt(2)^2; > 2 Also sage: sqrt(SR(16)) sqrt(16) sage: 27^(1/3) 27^(1/3) $ ginsh > sqrt(16); 4 > 27 ^ (1/3); 3 I think this will solve 90% of the remaining errors outside the symbolics directory. - Robert --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
