#15820: Implement sequences of bounded integers
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Reporter: SimonKing | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.3
Component: algebra | Resolution:
Keywords: sequence bounded | Merged in:
integer | Reviewers:
Authors: Simon King | Work issues:
Report Upstream: N/A | Commit:
Branch: | 5dc78c5f5f647bf95b98da916d7086fae539ffb8
u/SimonKing/ticket/15820 | Stopgaps:
Dependencies: |
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Comment (by SimonKing):
Replying to [comment:54 mmezzarobba]:
> Sorry it that's a stupid question (I only glanced through the code), but
why are you using `mpz`'s and not `mpn`'s?
Simply because I did not succeed in finding what functions are available
for `mpn_t`. So, if you can give me a pointer (similar to
[https://gmplib.org/manual/Integer-Functions.html#Integer-Functions the
documentation for `mpz_t`]), I'd appreciate. Probably non-signed types
will be a tad faster than signed types.
> It looks like you are already doing most if not all memory management by
hand...
What would be the alternative to doing so? I mean, what I need is some
tool to quickly operate on large bit arrays by shift operations,
preferably also with a good and fast hash function, and without the need
to think about the number of bits fitting into a byte or a long. I tried
to implement this myself, using `char*` or `long*` (which would also mean
to take care of allocating and freeing), but `mpz_t` turns out to be
faster.
So, if you know another tool, that is perhaps more directly dedicated to
bit arrays, then please tell!
--
Ticket URL: <http://trac.sagemath.org/ticket/15820#comment:55>
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