Status: Accepted
Owner: ----
Labels: Type-Defect Priority-Medium NeedsReview smichr
New issue 3081 by [email protected]: Mul.is_positive gets very slow for a
15-factor term
http://code.google.com/p/sympy/issues/detail?id=3081
This is related to the issue that was just fixed for Add, I believe:
is_positive (and is_negative) for Mul are written in a recursive manner. It
takes about 6 seconds to process the query for is_positive for
Mul(*[Dummy() for i in xrange(15)]).is_positive
This routine has been re-written in a nonrecursive manner in
https://github.com/sympy/sympy/pull/1058
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