#15820: Implement sequences of bounded integers
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Reporter: SimonKing | Owner:
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-6.4
Component: algebra | Resolution:
Keywords: sequence bounded | Merged in:
integer | Reviewers:
Authors: Simon King | Work issues:
Report Upstream: N/A | Commit:
Branch: | 93546db866564a80d80df30de48934697e2b0d1d
u/SimonKing/ticket/15820 | Stopgaps:
Dependencies: |
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Comment (by SimonKing):
Hooray, I can reproduce the problem on my machine, with a different
example!
The key is (as on your machine) to create a sequence that fits inside a
single limb, an then slice:
{{{
sage: S = BoundedIntegerSequence(8, [4,1,6,2,7,2,5,5,2])
sage: S
<4, 1, 6, 2, 7, 2, 5, 5, 2>
sage: S[1::2]
<1, 6, 7, 7>
sage: S[-1::-2]
<2, 5, 7, 6, 7>
}}}
The sequence above is of length 9, with items fitting into 3 bit. Hence,
27 bit are used, whereas one limb comprises 32 bits.
So, stuff for debugging!
--
Ticket URL: <http://trac.sagemath.org/ticket/15820#comment:112>
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