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/*
Copyright (C) 2009 William Hart
Copyright (C) 2010 Sebastian Pancratz
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 "ulong_extras.h"
TEST_FUNCTION_START(fmpz_poly_evaluate_mod, state)
{
int i, result;
/* Compare with evaluation over the integers */
for (i = 0; i < 1000 * flint_test_multiplier(); i++)
{
fmpz_t b, s;
fmpz_poly_t f;
ulong a, n, r;
fmpz_poly_init(f);
fmpz_poly_randtest(f, state, n_randint(state, 10), 20);
n = n_randtest_not_zero(state);
a = n_randint(state, n);
fmpz_init(b);
fmpz_init(s);
fmpz_set_ui(b, a);
r = fmpz_poly_evaluate_mod(f, a, n);
fmpz_poly_evaluate_fmpz(s, f, b);
result = (r == fmpz_mod_ui(s, s, n));
if (!result)
{
flint_printf("FAIL:\n");
fmpz_poly_print(f), flint_printf("\n\n");
gmp_printf("a = %Mu\n\n", a);
gmp_printf("n = %Mu\n\n", n);
gmp_printf("r = %Mu\n\n", r);
flint_printf("s = "), fmpz_print(s), flint_printf("\n\n");
fflush(stdout);
flint_abort();
}
fmpz_poly_clear(f);
fmpz_clear(b);
fmpz_clear(s);
}
TEST_FUNCTION_END(state);
}