#11143: define symbolic functions for exponential integrals
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Reporter: kcrisman | Owner:
benjaminfjones
Type: defect | Status:
needs_work
Priority: major | Milestone:
sage-5.2
Component: symbolics | Resolution:
Keywords: ei Ei special function maxima sd32 sd40.5 | Work issues:
Report Upstream: N/A | Reviewers:
Burcin Erocal, Karl-Dieter Crisman, William Stein
Authors: Benjamin Jones | Merged in:
Dependencies: | Stopgaps:
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Comment (by kcrisman):
> Okay, I've reported the issue with Maxima using the wrong branch for
`Shi` at
[https://sourceforge.net/tracker/?func=detail&aid=3529992&group_id=4933&atid=104933
this bug tracker ticket].
> {{{
> (%i30) float(expintegral_shi(1/2));
> (%o30) 3.141592653589793*%i+0.506996749819667
> }}}
Incidentally, this is apparently now fixed. Is this something we should
test for (not in this ticket) as well, since we use mpmath for it? I
really hate how there is no link on the Maxima bugtracker as to the actual
change in the code. Makes it harder for new folks to jump in.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11143#comment:69>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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