#13642: Modular exponentiation of polynomials
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Reporter: caruso | Owner:
AlexGhitza
Type: defect | Status:
needs_review
Priority: major | Milestone:
sage-5.11
Component: algebra | Resolution:
Keywords: modular exponentiation, polynomials | Work issues:
Report Upstream: N/A | Reviewers: Burcin
Erocal
Authors: caruso | Merged in:
Dependencies: | Stopgaps:
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Changes (by caruso):
* status: needs_work => needs_review
Old description:
> A faster implementation of modular exponentiation of polynomials.
>
> This implementation is used to improve speed in factorisation of skew
> polynomials (see ticket #13215).
New description:
A faster implementation of modular exponentiation of polynomials.
This implementation is used to improve speed in factorisation of skew
polynomials (see ticket #13215).
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Apply: [attachment: trac_13642_modular_exp_polynomial-2.patch]
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Comment:
Actually, I did not know the function {{{power_mod}}} (I duplicated and
adapted the code from
{{{sage.rings.polynomial.polynomial_element.__pow__}}}). I attach a new
patch where I just call {{{power_mod}}} instead of {{{_pow_modulus}}}.
Timings are comparable. I don't know if it's better this way. I let you
judge.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13642#comment:7>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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