#20731: shortcut coercion for Integer-Rational operations
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Reporter: vdelecroix | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-7.3
Component: coercion | Keywords: sd74
Merged in: | Authors: Vincent Delecroix
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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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
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/20731>
Sage <http://www.sagemath.org>
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