#10072: Bug in log gamma evaluation
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Reporter: kcrisman | Owner: AlexGhitza
Type: defect | Status: new
Priority: major | Milestone: sage-4.6.1
Component: basic arithmetic | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by kcrisman):
And even more perplexing is that `gamma(I)` is the same in all four
systems.
{{{
(%i1) ev(gamma(%i),numer);
(%o1) - .4980156681183565 %i - .1549498283018101
sage: gamma(i).n()
-0.154949828301811 - 0.498015668118356*I
sage: pari(i).gamma()
-0.154949828301811 - 0.498015668118356*I
> tgamma(I);
-0.15494982830181068507-0.49801566811835604268*I
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10072#comment:7>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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