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

107 lines
3.0 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) 2010 William Hart
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "nmod_poly.h"
#include "ulong_extras.h"
int
main(void)
{
int i, result;
FLINT_TEST_INIT(state);
flint_printf("reverse....");
fflush(stdout);
/* Check rev rev a == a */
for (i = 0; i < 1000 * flint_test_multiplier(); i++)
{
nmod_poly_t a, b;
mp_limb_t n = n_randtest_not_zero(state);
slong len;
nmod_poly_init(a, n);
nmod_poly_init(b, n);
nmod_poly_randtest(a, state, n_randint(state, 100));
len = nmod_poly_length(a);
nmod_poly_reverse(b, a, len);
nmod_poly_reverse(b, b, len);
result = (nmod_poly_equal(a, b));
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("len = %wd, n = %wu\n", len, a->mod.n);
nmod_poly_print(a), flint_printf("\n\n");
nmod_poly_print(b), flint_printf("\n\n");
abort();
}
nmod_poly_clear(a);
nmod_poly_clear(b);
}
/* check reversal for m > a->len */
for (i = 0; i < 1000 * flint_test_multiplier(); i++)
{
nmod_poly_t a, b;
mp_limb_t n = n_randtest_not_zero(state);
slong m = n_randint(state, 100) + 1;
slong len = n_randint(state, m);
nmod_poly_init(a, n);
nmod_poly_init(b, n);
nmod_poly_randtest(a, state, len);
nmod_poly_reverse(b, a, m);
nmod_poly_reverse(b, b, m);
result = (nmod_poly_equal(a, b));
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("len = %wd, m = %wd, n = %wu\n", a->length, m, a->mod.n);
nmod_poly_print(a), flint_printf("\n\n");
nmod_poly_print(b), flint_printf("\n\n");
abort();
}
nmod_poly_clear(a);
nmod_poly_clear(b);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}