Hi Sebastian, On Mon, 29 Jun 2009 12:54:30 -0700 (PDT) Sebastian Pancratz <s...@pancratz.org> wrote:
> > Hi there, > > After writing some SAGE code, profiling it and talking about it with > Martin Albrecht (more on that in another post a bit later), it turns > out that it spends a lot of time creating, adding and multiplying > univariate polynomials over the rationals. There is already a ticket > (#4000) > > http://trac.sagemath.org/sage_trac/ticket/4000 > > with some further details about this. > > While I won't have much time this very week, I would very much like to > offer to work on this in the two weeks after that. (As indicated > above this does affect my own code, and since the trac ticket suggests > an improvement by a factor of at least 10, I'd be quite motivated!) > However, I am not sure I know enough about SAGE yet, so I want to ask > whether anyone (who perhaps has already looked at the implementation > of polynomials over the rationals in SAGE but doesn't have enough > time/ motivation to implemented the suggested change) would be > interested in helping me to get started on that/ reply to the > occasional email when I have problems? I would really like to see this implemented too. I would be glad to answer any questions. I suggest you start looking at the wrapper for FLINT's zmod_poly type here: sage/rings/polynomial/polynomial_zmod_flint.pyx It uses the polynomial templates Robert Bradshaw and Martin Albrecht wrote at SD10 in Nancy: sage/rings/polynomial/polynomial_template.pxi You would essentially need to write a file such as this sage/libs/flint/zmod_poly_linkage.pxi which does the basic operations. You don't need to worry about the get_cparent() magic defined in the zmod_poly wrapper, since you won't need to keep track of a modulus for your polynomial objects. Many many thanks for volunteering to do this. Cheers, Burcin --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
