series: support directional limits on the complex plane

[skirpichev]

No description provided.

[anutosh491]

Could you check if this works correctly ? Maybe this would fail

>>> limit(atan(x), x, I*oo)   # expected pi/2
-pi/2

[skirpichev]

On Fri, Apr 08, 2022 at 05:43:26AM -0700, Anutosh Bhat wrote: Could you check if this works correctly ? Maybe this would fail >>> limit(atan(x), x, I*oo) # expected pi/2 -pi/2

$ python -m diofant In [1]: limit(atan(x), x, I*oo) # expected pi/2 Out[1]: π ─ 2 BTW, this does work on the master, isn't? This PR is far from completion, however. I'm still thinking about API. And only default bahaviour was implemented (i.e. if there is no `dir` - it's assumed to be `sign(z0)`)

[anutosh491]

I am using 0.12.0 for basic reference , where it fails , yeah I realize this pr would take more effort than what is done currently !

[skirpichev]

Latest "stable" is 0.13.0.

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On Fri, Apr 8, 2022, 16:18 Anutosh Bhat ***@***.***> wrote: I am using 0.12.0 for basic reference , where it fails , yeah I realize this pr would take more effort than what is done currently ! — Reply to this email directly, view it on GitHub <#1232 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAQOKGBRB7ZFECJ44XHPLHTVEAW3PANCNFSM5S3GDBBQ> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[skirpichev]

@anutosh491, the SymPy's series() method has cdir and dir options. Do you understand why?