FLINT3.7.0-dev

FQ_POLY_ITERATED_FROBENIUS_CUTOFF

Synopsis#include <flint/fq_poly_factor.h>
int FQ_POLY_ITERATED_FROBENIUS_CUTOFF(const fq_ctx_t ctx, slong length)source

Returns 1 if fq_poly_iterated_frobenius_preinv should use modular composition for a modulus of length length, which is the case if \log_2 q < 3(\lfloor \sqrt{\mathit{length}} \rfloor + 1). (FQ_NMOD_POLY_ITERATED_FROBENIUS_CUTOFF and FQ_ZECH_POLY_ITERATED_FROBENIUS_CUTOFF use 2 \log_2 q instead.)

Cite this page

The FLINT team, “FQ_POLY_ITERATED_FROBENIUS_CUTOFF (fq_poly_factor.h),” FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev, 2026. https://flintlib.org/doc/fq_poly_factor/FQ_POLY_ITERATED_FROBENIUS_CUTOFF.html (generated 2026-10-20).