#18207: Galois conjugation of cyclotomics is slow in GAP
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Reporter: | Owner:
vdelecroix | Status: new
Type: defect | Milestone: sage-6.7
Priority: major | Keywords:
Component: packages: | Authors:
standard | Report Upstream: Not yet reported upstream;
Merged in: | Will do shortly.
Reviewers: | Branch:
Work issues: | Dependencies:
Commit: |
Stopgaps: |
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The following is slow compared to what it should be
{{{
sage: a = libgap.E( 2^11 * 3^4 * 5^3 )
sage: %time a.ComplexConjugate()
CPU times: user 648 ms, sys: 0 ns, total: 648 ms
Wall time: 647 ms
E(20736000)^3455999+E(20736000)^17279999
}}}
This problem appeared during the implementation of a wrapper for the
universal cyclotomic field in #18152 (see in particular
[http://trac.sagemath.org/ticket/18152#comment:23 comment:23]).
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Ticket URL: <http://trac.sagemath.org/ticket/18207>
Sage <http://www.sagemath.org>
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