I need review on this style for matrix groundtypes, i.e. having a list of builtin dtypes, and an other option for misc backends. Do you think the list of builtins is good enough ? Should I add/remove stuff ?
The Matrix will still support seamlessness. I mean, if a Matrix of Ints comes up, and user wants to take its inverse, then the dtype will automatically be changed to Rational, and the inverse calculated in the Rational field. The original Matrix however would remain the same. ( In accordance to immutability). On Jun 2, 9:27 am, SherjilOzair <sherjiloz...@gmail.com> wrote: > scipy.sparse implements a dtype kwarg argument, but which currently > cannot take in arbitrary unknown types though. > One thing that can be done about this, is to define an interface for > the dtype. It would be taken for granted that it will have +, *, / > defined. Checks will be used in algorithms if it has pow, inverse > defined or not. > The caller will be provided with a dtype function argument in the > Matrix constructor. > > I list some built-in dtypes that sympy has and can provide. With only > these 6 dtypes, Matrix should suffice for 90% of symbolic matrix > needs. Possibly, if the caller doesn't want any of these dtypes, then > he should specify 'other' in the dtype argument. > > Int, numeric, can employ addition, multiplication, raising to positive > integral power. > Rational, numeric, can employ addition, multiplication, division, > inverse, raising to integral power. > Real, numeric, can employ addition, multiplication, division, inverse, > raising to any power. > Poly (Or one of its internals), symbolic, to support addition, > multiplication, division by scalar, *not* inverse, raising to positive > integral power. > Rational Function, symbolic, to support addition, multiplication, > division by scalar, inverse, raising to integral power. > Expr, symbolic, to support addition, multiplication, division by > scalar, inverse, raising to all powers. -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@googlegroups.com. To unsubscribe from this group, send email to sympy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
