pqc/external/flint-2.4.3/nmod_poly/test/t-compose_series_horner.c
2014-05-24 23:16:06 +02:00

158 lines
4.7 KiB
C

/*=============================================================================
This file is part of FLINT.
FLINT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FLINT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FLINT; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
=============================================================================*/
/******************************************************************************
Copyright (C) 2009 William Hart
Copyright (C) 2010 Sebastian Pancratz
Copyright (C) 2011 Fredrik Johansson
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "nmod_vec.h"
#include "nmod_poly.h"
#include "ulong_extras.h"
int
main(void)
{
int i, result;
FLINT_TEST_INIT(state);
flint_printf("compose_series_horner....");
fflush(stdout);
/* Check aliasing of the first argument */
for (i = 0; i < 10 * flint_test_multiplier(); i++)
{
nmod_poly_t f, g, h;
mp_limb_t m;
slong n;
m = n_randtest_prime(state, 0);
nmod_poly_init(f, m);
nmod_poly_init(g, m);
nmod_poly_init(h, m);
nmod_poly_randtest(g, state, n_randint(state, 40));
nmod_poly_randtest(h, state, n_randint(state, 20));
nmod_poly_set_coeff_ui(h, 0, 0);
n = n_randint(state, 20);
nmod_poly_compose_series_horner(f, g, h, n);
nmod_poly_compose_series_horner(g, g, h, n);
result = (nmod_poly_equal(f, g));
if (!result)
{
flint_printf("FAIL (aliasing 1):\n");
nmod_poly_print(f), flint_printf("\n\n");
nmod_poly_print(g), flint_printf("\n\n");
abort();
}
nmod_poly_clear(f);
nmod_poly_clear(g);
nmod_poly_clear(h);
}
/* Check aliasing of the second argument */
for (i = 0; i < 10 * flint_test_multiplier(); i++)
{
nmod_poly_t f, g, h;
mp_limb_t m;
slong n;
m = n_randtest_prime(state, 0);
nmod_poly_init(f, m);
nmod_poly_init(g, m);
nmod_poly_init(h, m);
nmod_poly_randtest(g, state, n_randint(state, 40));
nmod_poly_randtest(h, state, n_randint(state, 20));
nmod_poly_set_coeff_ui(h, 0, 0);
n = n_randint(state, 20);
nmod_poly_compose_series_horner(f, g, h, n);
nmod_poly_compose_series_horner(h, g, h, n);
result = (nmod_poly_equal(f, h));
if (!result)
{
flint_printf("FAIL (aliasing 2):\n");
nmod_poly_print(f), flint_printf("\n\n");
nmod_poly_print(h), flint_printf("\n\n");
abort();
}
nmod_poly_clear(f);
nmod_poly_clear(g);
nmod_poly_clear(h);
}
/* Compare with compose */
for (i = 0; i < 10 * flint_test_multiplier(); i++)
{
nmod_poly_t f, g, h, s, t;
mp_limb_t m;
slong n;
m = n_randtest_prime(state, 0);
nmod_poly_init(f, m);
nmod_poly_init(g, m);
nmod_poly_init(h, m);
nmod_poly_init(s, m);
nmod_poly_init(t, m);
nmod_poly_randtest(g, state, n_randint(state, 40));
nmod_poly_randtest(h, state, n_randint(state, 20));
nmod_poly_set_coeff_ui(h, 0, 0);
n = n_randint(state, 20);
nmod_poly_compose(s, g, h);
nmod_poly_truncate(s, n);
nmod_poly_compose_series_horner(f, g, h, n);
result = (nmod_poly_equal(f, s));
if (!result)
{
flint_printf("FAIL (comparison):\n");
flint_printf("n = %wd\n", n);
flint_printf("g = "), nmod_poly_print(g), flint_printf("\n\n");
flint_printf("h = "), nmod_poly_print(h), flint_printf("\n\n");
flint_printf("f = "), nmod_poly_print(f), flint_printf("\n\n");
flint_printf("s = "), nmod_poly_print(s), flint_printf("\n\n");
abort();
}
nmod_poly_clear(f);
nmod_poly_clear(g);
nmod_poly_clear(h);
nmod_poly_clear(s);
nmod_poly_clear(t);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}