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/*
Copyright (C) 2010 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 "test_helpers.h"
#include "fmpz.h"
#include "fmpz_poly.h"
#include "arith.h"
void arith_divisors_naive(fmpz_poly_t p, slong n)
{
slong k;
slong i = 0;
n = FLINT_ABS(n);
fmpz_poly_zero(p);
for (k = 1; k <= n; k++)
{
if (n % k == 0)
{
fmpz_poly_set_coeff_si(p, i, k);
i++;
}
}
}
TEST_FUNCTION_START(arith_divisors, state)
{
fmpz_t t;
fmpz_poly_t a, b;
slong n;
fmpz_init(t);
fmpz_poly_init(a);
fmpz_poly_init(b);
for (n = -1000; n < 1000; n++)
{
fmpz_set_si(t, n);
arith_divisors(a, t);
arith_divisors_naive(b, n);
if (!fmpz_poly_equal(a, b))
{
flint_printf("FAIL:\n");
flint_printf("wrong value for n=%wd\n", n);
fflush(stdout);
flint_abort();
}
}
fmpz_clear(t);
fmpz_poly_clear(a);
fmpz_poly_clear(b);
TEST_FUNCTION_END(state);
}