Sergey pointed this out on an issue. The problem is this test from
test_limits.py:
assert limit((x**1000/((x + 1)**1000 + exp(-x))), x, oo) == 1
If you replace "limit" with "gruntz" it hangs. If your change doesn't
hang this expression, then it's probably fine.
Aaron Meurer
On Tue, Feb 18, 2014 at 1:03 PM, Avichal Dayal <[email protected]> wrote:
> ok = lambda w: (z in w.free_symbols and
> any(a.is_polynomial(z) or
> any(z in m.free_symbols and m.is_polynomial(z)
> for m in Mul.make_args(a))
> for a in Add.make_args(w)))
> This is the ok function which checks whether it should apply the heuristics
> here or not.
> I think "any" should be replaced by "all" i.e. all the terms in the
> expression should be polynomials.
>
> Although there might be cases where expressions which are not polynomials
> work using
> this heuristic, it's better to be stricter. At-least it won't give wrong
> answers!
>
> If this is fine, I'll send the PR fixing this?
>
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