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

302 lines
9.5 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) 2011 Fredrik Johansson
Copyright (C) 2013 Martin Lee
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.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("mulmod_preinv....");
fflush(stdout);
/* Aliasing res and a */
for (i = 0; i < 50 * flint_test_multiplier(); i++)
{
nmod_poly_t a, b, res, t, f, finv;
mp_limb_t n = n_randtest_prime(state, 0);
nmod_poly_init(a, n);
nmod_poly_init(b, n);
nmod_poly_init(f, n);
nmod_poly_init(finv, n);
nmod_poly_init(res, n);
nmod_poly_init(t, n);
nmod_poly_randtest(a, state, n_randint(state, 50));
nmod_poly_randtest(b, state, n_randint(state, 50));
do {
nmod_poly_randtest(f, state, n_randint(state, 50));
} while (nmod_poly_is_zero(f));
if (a->length >= f->length)
nmod_poly_rem (a, a, f);
if (b->length >= f->length)
nmod_poly_rem (b, b, f);
nmod_poly_reverse(finv, f, f->length);
nmod_poly_inv_series(finv, finv, f->length);
nmod_poly_mulmod_preinv(res, a, b, f, finv);
nmod_poly_mulmod_preinv(a, a, b, f, finv);
result = (nmod_poly_equal(res, a));
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("a:\n"); nmod_poly_print(a), flint_printf("\n\n");
flint_printf("b:\n"); nmod_poly_print(b), flint_printf("\n\n");
flint_printf("f:\n"); nmod_poly_print(f), flint_printf("\n\n");
flint_printf("res1:\n"); nmod_poly_print(res), flint_printf("\n\n");
abort();
}
nmod_poly_clear(a);
nmod_poly_clear(b);
nmod_poly_clear(f);
nmod_poly_clear(finv);
nmod_poly_clear(res);
nmod_poly_clear(t);
}
/* Aliasing res and b */
for (i = 0; i < 50 * flint_test_multiplier(); i++)
{
nmod_poly_t a, b, res, t, f, finv;
mp_limb_t n = n_randtest_prime(state, 0);
nmod_poly_init(a, n);
nmod_poly_init(b, n);
nmod_poly_init(f, n);
nmod_poly_init(finv, n);
nmod_poly_init(res, n);
nmod_poly_init(t, n);
nmod_poly_randtest(a, state, n_randint(state, 50));
nmod_poly_randtest(b, state, n_randint(state, 50));
do {
nmod_poly_randtest(f, state, n_randint(state, 50));
} while (nmod_poly_is_zero(f));
if (a->length >= f->length)
nmod_poly_rem (a, a, f);
if (b->length >= f->length)
nmod_poly_rem (b, b, f);
nmod_poly_reverse(finv, f, f->length);
nmod_poly_inv_series(finv, finv, f->length);
nmod_poly_mulmod_preinv(res, a, b, f, finv);
nmod_poly_mulmod_preinv(b, a, b, f, finv);
result = (nmod_poly_equal(res, b));
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("a:\n"); nmod_poly_print(a), flint_printf("\n\n");
flint_printf("b:\n"); nmod_poly_print(b), flint_printf("\n\n");
flint_printf("f:\n"); nmod_poly_print(f), flint_printf("\n\n");
flint_printf("res1:\n"); nmod_poly_print(res), flint_printf("\n\n");
abort();
}
nmod_poly_clear(a);
nmod_poly_clear(b);
nmod_poly_clear(f);
nmod_poly_clear(finv);
nmod_poly_clear(res);
nmod_poly_clear(t);
}
/* Aliasing res and f */
for (i = 0; i < 50 * flint_test_multiplier(); i++)
{
nmod_poly_t a, b, res, t, f, finv;
mp_limb_t n = n_randtest_prime(state, 0);
nmod_poly_init(a, n);
nmod_poly_init(b, n);
nmod_poly_init(f, n);
nmod_poly_init(finv, n);
nmod_poly_init(res, n);
nmod_poly_init(t, n);
nmod_poly_randtest(a, state, n_randint(state, 50));
nmod_poly_randtest(b, state, n_randint(state, 50));
do {
nmod_poly_randtest(f, state, n_randint(state, 50));
} while (nmod_poly_is_zero(f));
if (a->length >= f->length)
nmod_poly_rem (a, a, f);
if (b->length >= f->length)
nmod_poly_rem (b, b, f);
nmod_poly_reverse(finv, f, f->length);
nmod_poly_inv_series(finv, finv, f->length);
nmod_poly_mulmod_preinv(res, a, b, f, finv);
nmod_poly_mulmod_preinv(f, a, b, f, finv);
result = (nmod_poly_equal(res, f));
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("a:\n"); nmod_poly_print(a), flint_printf("\n\n");
flint_printf("b:\n"); nmod_poly_print(b), flint_printf("\n\n");
flint_printf("f:\n"); nmod_poly_print(f), flint_printf("\n\n");
flint_printf("res1:\n"); nmod_poly_print(res), flint_printf("\n\n");
abort();
}
nmod_poly_clear(a);
nmod_poly_clear(b);
nmod_poly_clear(f);
nmod_poly_clear(finv);
nmod_poly_clear(res);
nmod_poly_clear(t);
}
/* Aliasing res and finv */
for (i = 0; i < 50 * flint_test_multiplier(); i++)
{
nmod_poly_t a, b, res, t, f, finv;
mp_limb_t n = n_randtest_prime(state, 0);
nmod_poly_init(a, n);
nmod_poly_init(b, n);
nmod_poly_init(f, n);
nmod_poly_init(finv, n);
nmod_poly_init(res, n);
nmod_poly_init(t, n);
nmod_poly_randtest(a, state, n_randint(state, 50));
nmod_poly_randtest(b, state, n_randint(state, 50));
do {
nmod_poly_randtest(f, state, n_randint(state, 50));
} while (nmod_poly_is_zero(f));
if (a->length >= f->length)
nmod_poly_rem (a, a, f);
if (b->length >= f->length)
nmod_poly_rem (b, b, f);
nmod_poly_reverse(finv, f, f->length);
nmod_poly_inv_series(finv, finv, f->length);
nmod_poly_mulmod_preinv(res, a, b, f, finv);
nmod_poly_mulmod_preinv(finv, a, b, f, finv);
result = (nmod_poly_equal(res, finv));
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("a:\n"); nmod_poly_print(a), flint_printf("\n\n");
flint_printf("b:\n"); nmod_poly_print(b), flint_printf("\n\n");
flint_printf("f:\n"); nmod_poly_print(f), flint_printf("\n\n");
flint_printf("finv:\n"); nmod_poly_print(finv), flint_printf("\n\n");
flint_printf("res1:\n"); nmod_poly_print(res), flint_printf("\n\n");
abort();
}
nmod_poly_clear(a);
nmod_poly_clear(b);
nmod_poly_clear(f);
nmod_poly_clear(finv);
nmod_poly_clear(res);
nmod_poly_clear(t);
}
/* No aliasing */
for (i = 0; i < 100 * flint_test_multiplier(); i++)
{
nmod_poly_t a, b, res1, res2, t, f, finv;
mp_limb_t n = n_randtest_prime(state, 0);
nmod_poly_init(a, n);
nmod_poly_init(b, n);
nmod_poly_init(f, n);
nmod_poly_init(finv, n);
nmod_poly_init(res1, n);
nmod_poly_init(res2, n);
nmod_poly_init(t, n);
nmod_poly_randtest(a, state, n_randint(state, 50));
nmod_poly_randtest(b, state, n_randint(state, 50));
do {
nmod_poly_randtest(f, state, n_randint(state, 50));
} while (nmod_poly_is_zero(f));
if (a->length >= f->length)
nmod_poly_rem (a, a, f);
if (b->length >= f->length)
nmod_poly_rem (b, b, f);
nmod_poly_reverse(finv, f, f->length);
nmod_poly_inv_series(finv, finv, f->length);
nmod_poly_mulmod_preinv(res1, a, b, f, finv);
nmod_poly_mul(res2, a, b);
nmod_poly_divrem(t, res2, res2, f);
result = (nmod_poly_equal(res1, res2));
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("a:\n"); nmod_poly_print(a), flint_printf("\n\n");
flint_printf("b:\n"); nmod_poly_print(b), flint_printf("\n\n");
flint_printf("f:\n"); nmod_poly_print(f), flint_printf("\n\n");
flint_printf("res1:\n"); nmod_poly_print(res1), flint_printf("\n\n");
flint_printf("res2:\n"); nmod_poly_print(res2), flint_printf("\n\n");
abort();
}
nmod_poly_clear(a);
nmod_poly_clear(b);
nmod_poly_clear(f);
nmod_poly_clear(finv);
nmod_poly_clear(res1);
nmod_poly_clear(res2);
nmod_poly_clear(t);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}