#14240: Universal cyclotomic field breaks for moderate order
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Reporter: mraum | Owner: davidloeffler
Type: defect | Status: new
Priority: major | Milestone: sage-5.9
Component: number fields | Resolution:
Keywords: ucf, overflow | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by nbruin):
I think the code tries to put denominators in `cdef int` which of course
quickly goes wrong:
{{{
sage: UCF.<E> = UniversalCyclotomicField()
sage: (1/(2**31-1)*E(2,1)+E(3,2))**2
OverflowError: value too large to convert to int
}}}
especially if you clear denominator by taking an `LCM` of a (long) list of
rational coefficients.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14240#comment:1>
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