#11143: define symbolic functions for exponential integrals
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Reporter: kcrisman | Owner:
benjaminfjones
Type: defect | Status:
positive_review
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):
> {{{
> > > (%i30) float(expintegral_shi(1/2));
> > > (%o30) 3.141592653589793*%i+0.506996749819667
> }}}
> > Is this something we should test for?
>
> yes please!
Keep in mind this is a Maxima output, not one we currently can even easily
access without using Maxima, since this ticket uses mpmath to evaluate
these functions, and we don't (yet) have different algorithm parameters
for all these special functions. We ''do'' test a fair number of values
of the "Sage" versions of these functions in this ticket!
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11143#comment:75>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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