#18210: numerical bug in incomplete gamma function
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Reporter: VivianePons | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.7
Component: symbolics | Resolution:
Keywords: sd67 | Merged in:
Authors: | Reviewers:
Report Upstream: Reported upstream. Developers | Work issues:
acknowledge bug. | Commit:
Branch: | Stopgaps:
Dependencies: |
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Comment (by buck):
I was finally able to integrate pari master-branch with sage, and while
the problem is much improved, it's not fixed. Here's the graph from the
original bug report, using newest pari:
Those discontinuities are false. An example bad value:
{{{
sage: gamma(100, 7.01)
-2.71843697211100e151
}}}
I will report this upstream, and attach a worksheet showing more detail.
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Ticket URL: <http://trac.sagemath.org/ticket/18210#comment:37>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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