#7822: pynac log function cannot handle float arguments <= 0
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Reporter: burcin | Owner: burcin
Type: defect | Status: needs_work
Priority: major | Milestone: sage-4.3.1
Component: symbolics | Keywords:
Work_issues: | Author: Burcin Erocal
Upstream: N/A | Reviewer:
Merged: |
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Changes (by jason):
* status: needs_review => needs_work
Comment:
This looks nice, but causes a serious speed regression:
BEFORE:
{{{
sage: %timeit ln(complex(-1))
10000 loops, best of 3: 29 µs per loop
sage: %timeit log(complex(-1))
10000 loops, best of 3: 43.2 µs per loop
}}}
AFTER:
{{{
sage: %timeit ln(complex(-1))
1000 loops, best of 3: 1.47 ms per loop
sage: %timeit log(complex(-1))
100 loops, best of 3: 1.47 ms per loop
}}}
Can this be fixed easily?
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7822#comment:2>
Sage <http://www.sagemath.org>
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