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/*
Copyright (C) 2013 Mike Hansen
This file is part of FLINT.
FLINT is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version. See <https://www.gnu.org/licenses/>.
*/
#ifdef T
#include "templates.h"
void
TEMPLATE(T, poly_iterated_frobenius_preinv) (TEMPLATE(T, poly_t) * rop,
slong n,
const TEMPLATE(T, poly_t) v,
const TEMPLATE(T, poly_t) vinv,
const TEMPLATE(T, ctx_t) ctx)
{
slong i;
fmpz_t q;
TEMPLATE(T, mat_t) HH;
fmpz_init(q);
TEMPLATE(T, ctx_order) (q, ctx);
TEMPLATE(T, poly_gen) (rop[0], ctx);
if (TEMPLATE(CAP_T, POLY_ITERATED_FROBENIUS_CUTOFF) (ctx, v->length))
{
TEMPLATE(T, mat_init) (HH, n_sqrt(v->length - 1) + 1, v->length - 1,
ctx);
TEMPLATE(T, poly_powmod_fmpz_sliding_preinv) (rop[1], rop[0], q, 0, v,
vinv, ctx);
TEMPLATE(T, poly_precompute_matrix) (HH, rop[1], v, vinv, ctx);
for (i = 2; i < n; i++)
{
TEMPLATE(T, poly_compose_mod_brent_kung_precomp_preinv)
(rop[i], rop[i - 1], HH, v, vinv, ctx);
}
TEMPLATE(T, mat_clear) (HH, ctx);
}
else
{
for (i = 1; i < n; i++)
TEMPLATE(T, poly_powmod_fmpz_sliding_preinv) (rop[i], rop[i - 1],
q, 0, v, vinv, ctx);
}
fmpz_clear(q);
}
#endif