#9400: modify the NumberField constructor to pass in optional integer B such
that
all the internal pari routines will replace the discriminant by its gcd
with B, making some things massively faster.
---------------------------------------------+------------------------------
Reporter: was | Owner: jdemeyer
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.6
Component: number fields | Keywords: PARI number field
Author: William Stein, Jeroen Demeyer | Upstream: N/A
Reviewer: Jeroen Demeyer, John Cremona | Merged:
Work_issues: |
---------------------------------------------+------------------------------
Changes (by jdemeyer):
* status: needs_work => needs_review
Old description:
> Also:
>
> * ReSTify residue class fields
>
> * massively optimize reduction modulo a prime (e.g., the first
> interesting example I tried, I got a speedup of a factor of 500,000! Yes
> half a million times faster!).
>
> Parts of this patch have been moved to #9764.
New description:
Also:
* ReSTify residue class fields
* massively optimize reduction modulo a prime (e.g., the first
interesting example I tried, I got a speedup of a factor of 500,000! Yes
half a million times faster!).
Parts of this patch have been moved to #9764.
Apply only {{{9400_combined.patch}}} and apply it on top of the patches
from #9343. See also [http://wiki.sagemath.org/NewPARI].
--
Comment:
Replying to [comment:28 was]:
> I tried to apply your patch (9400_combined.patch) and there are a
massive number of rejects:
It is meant to be applied after #9343, then it works fine.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9400#comment:29>
Sage <http://www.sagemath.org>
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