#20731: shortcut coercion for Integer-Rational operations
--------------------------------------+----------------------------
Reporter: vdelecroix | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-7.3
Component: coercion | Resolution:
Keywords: sd74 | Merged in:
Authors: Vincent Delecroix | Reviewers:
Report Upstream: N/A | Work issues:
Branch: u/vdelecroix/20731 | Commit:
Dependencies: | Stopgaps:
--------------------------------------+----------------------------
Changes (by vdelecroix):
* status: new => needs_review
* branch: => u/vdelecroix/20731
Old description:
> Doing some shortcut to coercion actually fasten the code
>
> Old version
> {{{
> sage: z = 2
> sage: q = QQ((-1,5))
> sage: %timeit z + q
> sage: %timeit q + z
> sage: %timeit z - q
> sage: %timeit q - z
> sage: %timeit z * q
> sage: %timeit q * z
> sage: %timeit z / q
> sage: %timeit q / z
> }}}
> New version
> {{{
> sage: z = 2
> sage: q = QQ((-1,5))
> sage: %timeit z + q
> 1000000 loops, best of 3: 265 ns per loop
> sage: %timeit q + z
> 1000000 loops, best of 3: 323 ns per loop
> sage: %timeit z - q
> 1000000 loops, best of 3: 261 ns per loop
> sage: %timeit q - z
> 1000000 loops, best of 3: 319 ns per loop
> sage: %timeit z * q
> 1000000 loops, best of 3: 341 ns per loop
> sage: %timeit q * z
> 1000000 loops, best of 3: 446 ns per loop
> sage: %timeit z / q
> 1000000 loops, best of 3: 341 ns per loop
> sage: %timeit q / z
> 1000000 loops, best of 3: 396 ns per loop
> }}}
New description:
Doing some shortcut to coercion actually fasten the code by a factor 3...
Old version
{{{
sage: z = 2
sage: q = QQ((-1,5))
sage: sage: %timeit z + q
1000000 loops, best of 3: 930 ns per loop
sage: sage: %timeit q + z
1000000 loops, best of 3: 930 ns per loop
sage: sage: %timeit z - q
1000000 loops, best of 3: 848 ns per loop
sage: sage: %timeit q - z
1000000 loops, best of 3: 776 ns per loop
sage: sage: %timeit z * q
1000000 loops, best of 3: 1.15 µs per loop
sage: sage: %timeit q * z
1000000 loops, best of 3: 1.17 µs per loop
sage: sage: %timeit z / q
1000000 loops, best of 3: 1.09 µs per loop
sage: sage: %timeit q / z
1000000 loops, best of 3: 1.1 µs per loop
}}}
New version
{{{
sage: z = 2
sage: q = QQ((-1,5))
sage: %timeit z + q
1000000 loops, best of 3: 265 ns per loop
sage: %timeit q + z
1000000 loops, best of 3: 323 ns per loop
sage: %timeit z - q
1000000 loops, best of 3: 261 ns per loop
sage: %timeit q - z
1000000 loops, best of 3: 319 ns per loop
sage: %timeit z * q
1000000 loops, best of 3: 341 ns per loop
sage: %timeit q * z
1000000 loops, best of 3: 446 ns per loop
sage: %timeit z / q
1000000 loops, best of 3: 341 ns per loop
sage: %timeit q / z
1000000 loops, best of 3: 396 ns per loop
}}}
--
--
Ticket URL: <http://trac.sagemath.org/ticket/20731#comment:1>
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 https://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/d/optout.
