#15746: Polynomials over finite fields gives overflow error with large numbers
----------------------------+----------------------------------------------
Reporter: tscrim | Owner: tscrim
Type: defect | Status: new
Priority: major | Milestone: sage-6.1
Component: basic | Keywords: polynomials, finite fields
arithmetic | Authors:
Merged in: | Report Upstream: N/A
Reviewers: | Branch:
Work issues: | Dependencies:
Commit: |
Stopgaps: |
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{{{
sage: R.<x,y> = GF(7)[]
sage: R(2^31)
---------------------------------------------------------------------------
OverflowError Traceback (most recent call
last)
<ipython-input-46-6fd7adc32b9b> in <module>()
----> 1 R(Integer(2)**Integer(31))
/home/travis/sage/local/lib/python2.7/site-
packages/sage/rings/polynomial/multi_polynomial_libsingular.so in
sage.rings.polynomial.multi_polynomial_libsingular.MPolynomialRing_libsingular.__call__
(sage/rings/polynomial/multi_polynomial_libsingular.cpp:6134)()
/home/travis/sage/local/lib/python2.7/site-
packages/sage/rings/polynomial/multi_polynomial_libsingular.so in
sage.rings.polynomial.multi_polynomial_libsingular.MPolynomialRing_libsingular._coerce_c_impl
(sage/rings/polynomial/multi_polynomial_libsingular.cpp:5633)()
OverflowError: Python int too large to convert to C long
}}}
Compare with:
{{{
sage: GF(7)(2^31)
2
}}}
This might be related to other problems posted in #8857 or fixed by
#11239.
--
Ticket URL: <http://trac.sagemath.org/ticket/15746>
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