On Jan 10, 12:55 pm, Johannes <dajo.m...@web.de> wrote: > hey list, > > If you look at the code, there is a function called _new_c() which is > used in the multiplication algorithm.
See http://trac.sagemath.org/sage_trac/ticket/8294 Looks like a little more is broken than just __copy__. Normally, _mutability gets set in matrix0's Matrix.__init__. Matrix_integer_dense gets that by explicitly calling a superclass __init__ in its __cinit__. I guess 2x2 tries to avoid that for efficiency reasons, but it suggests that its __cinit__ (or at least its _new_c) should then set the _mutability attribute. Is this class intentionally producing maimed instances for efficiency reasons perhaps? -- You received this message because you are subscribed to the Google Groups "sage-devel" group. 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. Visit this group at http://groups.google.com/group/sage-devel?hl=en.
