#17786: Make RealBallField useful
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Reporter: | Owner:
mmezzarobba | Status: new
Type: | Milestone: sage-6.5
enhancement | Resolution:
Priority: major | Merged in:
Component: basic | Reviewers:
arithmetic | Work issues:
Keywords: | Commit:
Authors: | 21bee7d9121ad93cf16c83a579e0b72e8b094c8f
Report Upstream: N/A | Stopgaps:
Branch: |
u/mmezzarobba/arb |
Dependencies: |
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Comment (by mmezzarobba):
Replying to [comment:1 fredrik.johansson]:
> Regarding the "What is going on?!" comment: transcendental functions are
not quite deterministic due to internal caches. In this case, doing
something that results in an internal recomputation of log(2) to higher
precision leads to a slightly more accurate value later on.
Good to know, I wasn't aware of that.
> This is something that I could fix with a bit of effort.
Unless you have other users that need it, I don't think it is worth the
effort.
> In any case, output could also change slightly between versions due to
changes in algorithms. That's an inherent drawback of doing doctests this
way...
Yes. But I thought I'd first go with a version that tested the exact
output, and we could always make something more sophisticated later on if
some of the outputs really changed.
Thanks for your comments!
--
Ticket URL: <http://trac.sagemath.org/ticket/17786#comment:2>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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