Regarding the cancellation issues: Isn't it possible to rewrite expressions such that they give smaller rounding errors when evaluated using floating point arithmetic? (Like x^2 - y^2 = (x + y)(x - y).) Sympy could do this.
Does anyone know of some work on rewriting general expressions into numerically more favorable forms? Vinzent -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/b8bf6c20-2222-4c33-a6ba-a35fde526d16%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
