#4000: Implement QQ['x'] via Flint ZZ['x'] + denominator
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Reporter: malb | Owner: somebody
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.3.2
Component: basic arithmetic | Keywords:
Author: Sebastian Pancratz, Martin Albrecht | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by AlexGhitza):
Replying to [comment:43 spancratz]:
> There's clearly something dodgy going on here. On my 32-bit laptop,
with a clean 4.3.1.rc0 install and only the patches from this thread,
>
> {{{
> sage: R.<x> = QQ[]
> sage: S.<a> = R.quotient(3*x^3 + 3/2*x -1/3)
> sage: 3 * a^3 + S.modulus()
> -3/2*a + 1/3
> sage: timeit('_ = 3 * a^3 + S.modulus()')
> 5 loops, best of 3: 14.3 s per loop
> }}}
I've tried a couple more times and I'm still getting the memory problem
followed by crash and core dump. I'm running 32-bit archlinux on a Dell
laptop, with version 4.4.2 of gcc. It's a clean build of sage-4.3.1 with
the patches here.
I also have a macbook running 64-bit archlinux. It's busy doing other
things now, but I can try to test this on it later.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4000#comment:45>
Sage <http://www.sagemath.org>
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