#19825: Better comparison and conversion code for UCF
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Reporter: vdelecroix | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-7.0
Component: number fields | Resolution:
Keywords: | Merged in:
Authors: Vincent Delecroix | Reviewers:
Report Upstream: N/A | Work issues:
Branch: u/vdelecroix/19825 | Commit:
Dependencies: | Stopgaps:
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Changes (by vdelecroix):
* status: new => needs_review
* branch: => u/vdelecroix/19825
Old description:
> We fasten the comparison code and fix the following for the Universal
> cyclotomic field:
> {{{
> sage: CIF(E(3))
> Traceback (most recent call last):
> ...
> TypeError: unable to coerce to a ComplexIntervalFieldElement
> }}}
New description:
We fasten the comparison code and fix the following for the Universal
cyclotomic field:
{{{
sage: CIF(E(3))
Traceback (most recent call last):
...
TypeError: unable to coerce to a ComplexIntervalFieldElement
}}}
Before
{{{
sage: %timeit cmp(E(3), E(5))
1000 loops, best of 3: 1.4 ms per loop
sage: %timeit cmp(E(3)+E(3)**2, E(5)+E(5)**2)
1000 loops, best of 3: 975 µs per loop
}}}
After
{{{
sage: %timeit cmp(E(3), E(5))
1000 loops, best of 3: 241 µs per loop
sage: %timeit cmp(E(3)+E(3)**2, E(5)+E(5)**2)
1000 loops, best of 3: 181 µs per loop
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/19825#comment:1>
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