#10164: Few digits of precision in N().
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Reporter: gerbicz | Owner: jason
Type: defect | Status: needs_review
Priority: major | Milestone: sage-5.0
Component: misc | Keywords: N, digits, numerical
approximation
Work_issues: | Upstream: N/A
Reviewer: Karl-Dieter Crisman | Author: Robert Gerbicz, Douglas
McNeil
Merged: | Dependencies:
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Comment(by dsm):
I don't really object, although putting the overestimate right at the end
might cause problems for people with more digits than they can possibly
have memory for, as it's hard to trust arithmetic down at the lsb level
unless you think harder about things than this problem warrants. For
example, `float("3.32192809488736235") < math.log(10,2)`, even though
`3.32192809488736235 > log(10,2)`, which might not be what you'd guess.
Anyway, I'm fine with adding more digits, as long as it's still an
overestimate w.r.t. math.log. If `3.321928094887363` is okay, then I'll
update the patch, fix the docs, and we can put this to bed.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10164#comment:14>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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