#16025: numerical inconsistency with exponential integral values Ei(x)
------------------------+----------------------------
Reporter: rws | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.2
Component: calculus | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
------------------------+----------------------------
{{{
sage: Ei(1.1,prec=300)
/home/ralf/sage/src/bin/sage-ipython:1: DeprecationWarning: The prec
keyword argument is deprecated. Explicitly set the precision of the input,
for example Ei(RealField(300)(1)), or use the prec argument to .n() for
exact inputs, e.g., Ei(1).n(300), instead.
See http://trac.sagemath.org/7748 for details.
#!/usr/bin/env python
2.16737827956340306615064476647912607220394065907142504328679588538509331805598360907980986
sage: Ei(1.1).n(300)
2.16737827956340289858871983597055077552795410156250000000000000000000000000000000000000000
sage: Ei(RealField(300)(1.1))
2.16737827956340282358378734233807621497112737591639704719499002090327541763352339357795426
}}}
Not sure what would be correct, though.
--
Ticket URL: <http://trac.sagemath.org/ticket/16025>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/d/optout.
