#15820: Implement sequences of bounded integers
-------------------------------------+-------------------------------------
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 chapoton):
got that :
{{{
sage: from sage.misc.bounded_integer_sequences import
BoundedIntegerSequence
sage: S = BoundedIntegerSequence(21, [4,1,6,2,7,20,9])
sage: S.inspect()
bitsize 35
itembitsize 5
mask_item 11111
length 7
GMP size 1
GMP alloc 2
0000000000000000000000000000001001101000011100010001100000100100
sage: S[1::2]
<1, 6, 23>
sage: (S[1::2]).inspect()
bitsize 15
itembitsize 5
mask_item 11111
length 3
GMP size 1
GMP alloc 2
0000000000000000000000000000000000010011110111111101110011000001
sage: S[-1::-2]
<9, 7, 22, 15>
sage: (S[-1::-2]).inspect()
bitsize 20
itembitsize 5
mask_item 11111
length 4
GMP size 1
GMP alloc 2
0000000000000001001101000011101011101100011101111101100011101001
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/15820#comment:109>
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