On Jul 21, 1:36 pm, Jason Grout <jason-s...@creativetrax.com> wrote: > The RDF uses scipy, which in turn uses the standard fortran libraries to > compute these things. We could maybe make a bigger cutoff for deciding > when the returned value is zero. But I think we still ought to call > scipy/fortran for the RDF functions. In general, RDF things are > machine-precision things, and that is what scipy/fortran specializes in. >
Yes, sounds reasonable. I think that's in the end more a documentation problem, explaining these things in more detail or at the "right" places where users expect them to find. (or some additional pointers, "read more about RDF here ... ") My personal "philosophy" is, to expose as much as possible to the user without too many layers in between. Otherwise some might start to work around the interface or use other software. But, it should still also be as coherent as possible. I.e. in that case, it should be made clear that there are different answers to the same problem due to roundoff and machine precision issues. Otherwise it would make no sense to provide a choice of rings to users ;) H --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
