#7795: MPolynomialRing segfaults when getting high exponents
-----------------------------------+----------------------------------------
Reporter: SimonKing | Owner: malb
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.5.2
Component: commutative algebra | Keywords: MPolynomialRing_libsingular
segfault with high exponents
Author: Martin Albrecht | Upstream: N/A
Reviewer: | Merged:
Work_issues: Fix doctests |
-----------------------------------+----------------------------------------
Comment(by SimonKing):
Some random timings:
Without the patch
{{{
sage: R.<x,y,z> = GF(3)[]
sage: p = R.random_element()
sage: p
-y^2 + x*z - z^2 - z
sage: timeit('q=p^100')
125 loops, best of 3: 6.24 ms per loop
}}}
With the new patch and the same polynomial, I get:
{{{
sage: timeit('q=p^100')
125 loops, best of 3: 2.99 ms per loop
}}}
So, this is already good news!
Criticism: The patch still does not provide doctests showing that the
problem is fixed. I am now running doctests, and if they pass, I'll try to
add a proper doctest via reviewer patch.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7795#comment:6>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
