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/*
Copyright (C) 2020 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 "fmpz_mpoly.h"
void
fmpz_mpoly_vec_set_primitive_unique(fmpz_mpoly_vec_t G, const fmpz_mpoly_vec_t F, const fmpz_mpoly_ctx_t ctx)
{
slong i, j, len;
fmpz_mpoly_vec_set(G, F, ctx);
len = G->length;
for (i = 0; i < len; i++)
{
/* skip zero */
if (fmpz_mpoly_is_zero(fmpz_mpoly_vec_entry(G, i), ctx))
{
fmpz_mpoly_swap(fmpz_mpoly_vec_entry(G, i),
fmpz_mpoly_vec_entry(G, len - 1), ctx);
G->length--;
len--;
i--;
}
else
{
fmpz_mpoly_primitive_part(fmpz_mpoly_vec_entry(G, i), fmpz_mpoly_vec_entry(G, i), ctx);
for (j = 0; j < i; j++)
{
if (fmpz_mpoly_equal(fmpz_mpoly_vec_entry(G, i), fmpz_mpoly_vec_entry(G, j), ctx))
{
fmpz_mpoly_zero(fmpz_mpoly_vec_entry(G, i), ctx);
fmpz_mpoly_swap(fmpz_mpoly_vec_entry(G, i), fmpz_mpoly_vec_entry(G, len - 1), ctx);
G->length--;
len--;
i--;
break;
}
}
}
}
}