#12103: Use MeatAxe as an optional back end for dense matrices over `GF(p^n)`, p
odd, n>1, `p^n<255`
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Reporter: SimonKing | Owner: jason, was
Type: defect | Status: needs_work
Priority: major | Milestone: sage-6.4
Component: packages: | Resolution:
experimental | Merged in:
Keywords: linear algebra, | Reviewers:
MeatAxe | Work issues:
Authors: Simon King | Commit:
Report Upstream: None of the above | 191477e697d5fb02c0e6bf7f8b80850e1092d4f6
- read trac for reasoning. | Stopgaps:
Branch: |
u/SimonKing/meataxe |
Dependencies: #19240 |
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Comment (by SimonKing):
Replying to [comment:125 jdemeyer]:
> Replying to [comment:124 SimonKing]:
> > otherwise it would just continue.
> Would that make sense? If you're doing something with the result, you
need that it's not `NULL`, so the `except NULL` can actually be an
additional sanity check (IIRC, Cython raises a `SystemError` when there is
no exception set if there should be one. That's safer that a segfault
because you forgot to check for a `NULL`).
Correct. The edits I am currently doing generally assume an error if an
error value occurs (accepting Cython's !SystemError as an answer). There
is one function where the docs say that the value -1 means that PERHAPS
there was an exception, and I'll use `except?` only in those cases.
--
Ticket URL: <http://trac.sagemath.org/ticket/12103#comment:126>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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