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/*
Copyright (C) 2016 Vincent Delecroix
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_poly.h"
TEST_FUNCTION_START(fmpz_poly_num_real_roots_0_1, state)
{
slong iter;
for (iter = 0; iter < 1000 * flint_test_multiplier(); iter++)
{
fmpz_poly_t p;
slong k1, k2;
fmpz_poly_init(p);
if (iter == 0)
{
// e-antic issue #301
fmpz_poly_set_coeff_si(p, 0, 52);
fmpz_poly_set_coeff_si(p, 3, -304);
fmpz_poly_set_coeff_si(p, 8, -23);
}
else
{
do{
fmpz_poly_randtest(p, state, 10, 10);
} while (fmpz_poly_is_zero(p) || !fmpz_poly_is_squarefree(p));
}
k1 = fmpz_poly_num_real_roots_0_1_vca(p);
k2 = fmpz_poly_num_real_roots_0_1_sturm(p);
if (k1 != k2)
{
flint_printf("ERROR:\n");
flint_printf("vca and Sturm disagree\n");
flint_printf("p = "); fmpz_poly_print(p); flint_printf("\n");
flint_printf("(vca) k1 = %wd (Sturm) k2 = %wd\n", k1, k2);
flint_abort();
}
fmpz_poly_clear(p);
}
TEST_FUNCTION_END(state);
}