#13376: Optional SPKG for SmallJac
----------------------------------------------------+-----------------------
Reporter: pavpanchekha | Owner: tbd
Type: enhancement | Status:
needs_work
Priority: major | Milestone:
Component: optional packages | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers: R. Andrew
Ohana
Authors: Pavel Panchekha, Drew Sutherland | Merged in:
Dependencies: | Stopgaps:
----------------------------------------------------+-----------------------
Comment (by leif):
Replying to [comment:17 nbruin]:
> Replying to [comment:16 leif]:
> > Unfortunately AFAICS the code also implicitly assumes that
`sizeof(unsigned long)==8` (instead of using `uint64_t` where
appropriate), which makes it pretty hard to port it to 32-bit systems (or
other systems on which that assumption is false).
>
> It seems C99 guarantees the existence of `uint_fast64_t`. Perhaps using
that would be portable?
? Using `uint64_t` would be portable.
With `uint_fast64_t`, you may (at some point in the future...) run into
problems because the assumption is `sizeof(unsigned long)==8`, not `>=8`,
at least in most cases. (128-bit quantities are currently split into two
`unsigned long`s; it would of course be worth using native integral types
there if available.)
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13376#comment:18>
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 unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.
