#7918: log(float(_)) is really slow
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Reporter: bober | Owner: tbd
Type: defect | Status: new
Priority: major | Milestone:
Component: performance | Keywords: log
Work_issues: | Author:
Upstream: N/A | Reviewer:
Merged: |
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Somewhere between 4.1 and 4.3, log(x) got really slow when x is a float.
Example:
{{{
sage: version()
'Sage Version 4.3, Release Date: 2009-12-24'
sage: x = float(5)
sage: x
5.0
sage: timeit('log(x)')
625 loops, best of 3: 362 µs per loop
}}}
{{{
sage: version()
'Sage Version 4.1, Release Date: 2009-07-09'
sage: x = float(5)
sage: timeit('log(x)')
625 loops, best of 3: 7.26 µs per loop
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7918>
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