#15820: Implement sequences of bounded integers
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Reporter: SimonKing | Owner:
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-6.3
Component: algebra | Resolution:
Keywords: sequence bounded | Merged in:
integer | Reviewers:
Authors: Simon King | Work issues: Document cdef
Report Upstream: N/A | functions
Branch: | Commit:
u/SimonKing/ticket/15820 | efef80bea22840f618335b7dd6f5d3e9a64fa301
Dependencies: | Stopgaps:
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Changes (by SimonKing):
* status: needs_review => needs_work
* work_issues: => Document cdef functions
Comment:
I have at some point merged the latest beta. Sorry, I keep forgetting that
merging stuff prematurely is bad. Main point was to relocate the code from
sage.structure to sage.misc.
I don't think I will use `mpn_*`. It just seems too low-level. For
example, I see `mpn_lshift` and `mpn_rshift` operations, but they operate
on limbs, not on bit arrays. Hence, in order to implement a bitshift on
bit arrays (which is what I need in concatenation and many other
operations), I'd still need to invest a lot of work, essentially what I
have done with the proof-of-concept using `long*` to store bit arrays. I
doubt that in the end it would be any faster than using `mpz_mul_2exp` and
friends.
Documentation of the cdef functions is still missing, this is what I
intend to do next.
--
Ticket URL: <http://trac.sagemath.org/ticket/15820#comment:60>
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