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/*
Copyright (C) 2007 David Howden
Copyright (C) 2007, 2008, 2009, 2010, 2022 William Hart
Copyright (C) 2008 Richard Howell-Peak
Copyright (C) 2011 Fredrik Johansson
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/>.
*/
#include "nmod_poly.h"
#include "nmod_poly_factor.h"
void
nmod_poly_factor_equal_deg(nmod_poly_factor_t factors,
const nmod_poly_t pol, slong d)
{
if (pol->length == d + 1)
{
nmod_poly_factor_insert(factors, pol, 1);
}
else
{
nmod_poly_t f, g;
flint_rand_t state;
nmod_poly_init_mod(f, pol->mod);
flint_rand_init(state);
while (!nmod_poly_factor_equal_deg_prob(f, state, pol, d))
;
flint_rand_clear(state);
nmod_poly_init_mod(g, pol->mod);
nmod_poly_divexact(g, pol, f);
nmod_poly_factor_equal_deg(factors, f, d);
nmod_poly_clear(f);
nmod_poly_factor_equal_deg(factors, g, d);
nmod_poly_clear(g);
}
}