#12449: Improve the gamma function
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Reporter: bober | Owner: bober
Type: enhancement | Status: new
Priority: major | Milestone: sage-5.0
Component: basic arithmetic | Keywords: gamma function
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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There are numerical inaccuracies in the gamma function on python floats on
some platforms. See, e.g.
http://groups.google.com/group/sage-
devel/browse_thread/thread/3c8c61ea113ea60c
Also, the current implementation is slower than it should be on basic
types:
{{{
sage: timeit('gamma(6.0r)')
625 loops, best of 3: 32 µs per loop
sage: timeit('gamma(6r)')
625 loops, best of 3: 44.3 µs per loop
sage: timeit('gamma(6.0)')
625 loops, best of 3: 22.9 µs per loop
sage: timeit('gamma(6)')
625 loops, best of 3: 3.29 µs per loop
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12449>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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