#18560: Upgrade arb to 2.6.0
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Reporter: cheuberg | Owner:
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-6.8
Component: packages: | Resolution:
optional | Merged in:
Keywords: arb | Reviewers:
Authors: Clemens Heuberger | Work issues:
Report Upstream: N/A | Commit:
Branch: | 3b534cbb91702fb1f7fd1dfd4b69974bb0411b4e
u/cheuberg/libs/arb-2.6.0 | Stopgaps:
Dependencies: |
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Comment (by cheuberg):
Replying to [comment:25 jdemeyer]:
> Replying to [comment:23 fredrik.johansson]:
> > 1. Print doctest examples with a few digits less than the computed
precision, so that most of the radius bound in the printed output comes
from the decimal rounding. This will only rarely cause a last digit to
flip over unpredictably. The disadvantage is that the doctest does not
show the actual computed interval. On the other hand, the output is a
neater representation of the mathematical value. For example, if you print
pi to 10 digits, you should always get [3.141592654 +/- 4.11e-10] beyond a
certain working precision (from 43 bits, in fact) since the actual
difference between pi and 3.141592654 is 4.102...e-10.
> If we go with this, I would not make a difference between normal
interactive Sage output and doctests. Just print balls with fewer digits
always, like we already do for `RR`.
I do not like the idea of always printing less information than we
actually have. After all, we precisely know the error, so dilluting it
seems somehow crude.
--
Ticket URL: <http://trac.sagemath.org/ticket/18560#comment:27>
Sage <http://www.sagemath.org>
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