#14496: unify the three implementations of gaussian q-binomial coefficients
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Reporter: chapoton | Owner: tbd
Type: task | Status: needs_info
Priority: major | Milestone: sage-5.10
Component: combinatorics | Resolution:
Keywords: gaussian binomial | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Frédéric Chapoton | Merged in:
Dependencies: | Stopgaps:
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Comment (by chapoton):
Here is a new patch
* using the minimum of k and n-k in the naive algo
* implementing the following strategy :
if n <= 70 or k <= N/4 or q is not a polynomial, use the naive algo
otherwise use the cyclotomic algo
I have found this strategy using some timings (I only timed the polynomial
case).
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14496#comment:12>
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