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

189 lines
5.4 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
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "fmpz.h"
#include "fmpz_poly.h"
#include "ulong_extras.h"
int
main(void)
{
int i, result;
FLINT_TEST_INIT(state);
flint_printf("mul....");
fflush(stdout);
/* Check aliasing of a and b */
for (i = 0; i < 200 * flint_test_multiplier(); i++)
{
fmpz_poly_t a, b, c;
fmpz_poly_init(a);
fmpz_poly_init(b);
fmpz_poly_init(c);
fmpz_poly_randtest(b, state, n_randint(state, 50), 500);
fmpz_poly_randtest(c, state, n_randint(state, 50), 500);
fmpz_poly_mul(a, b, c);
fmpz_poly_mul(b, b, c);
result = (fmpz_poly_equal(a, b));
if (!result)
{
flint_printf("FAIL:\n");
fmpz_poly_print(a), flint_printf("\n\n");
fmpz_poly_print(b), flint_printf("\n\n");
abort();
}
fmpz_poly_clear(a);
fmpz_poly_clear(b);
fmpz_poly_clear(c);
}
/* Check aliasing of a and c */
for (i = 0; i < 200 * flint_test_multiplier(); i++)
{
fmpz_poly_t a, b, c;
fmpz_poly_init(a);
fmpz_poly_init(b);
fmpz_poly_init(c);
fmpz_poly_randtest(b, state, n_randint(state, 50), 500);
fmpz_poly_randtest(c, state, n_randint(state, 50), 500);
fmpz_poly_mul(a, b, c);
fmpz_poly_mul(c, b, c);
result = (fmpz_poly_equal(a, c));
if (!result)
{
flint_printf("FAIL:\n");
fmpz_poly_print(a), flint_printf("\n\n");
fmpz_poly_print(c), flint_printf("\n\n");
abort();
}
fmpz_poly_clear(a);
fmpz_poly_clear(b);
fmpz_poly_clear(c);
}
/* Check (b*c)+(b*d) = b*(c+d) */
for (i = 0; i < 200 * flint_test_multiplier(); i++)
{
fmpz_poly_t a1, a2, b, c, d;
fmpz_poly_init(a1);
fmpz_poly_init(a2);
fmpz_poly_init(b);
fmpz_poly_init(c);
fmpz_poly_init(d);
fmpz_poly_randtest(b, state, n_randint(state, 100), 500);
fmpz_poly_randtest(c, state, n_randint(state, 100), 500);
fmpz_poly_randtest(d, state, n_randint(state, 100), 500);
fmpz_poly_mul(a1, b, c);
fmpz_poly_mul(a2, b, d);
fmpz_poly_add(a1, a1, a2);
fmpz_poly_add(c, c, d);
fmpz_poly_mul(a2, b, c);
result = (fmpz_poly_equal(a1, a2));
if (!result)
{
flint_printf("FAIL:\n");
fmpz_poly_print(a1), flint_printf("\n\n");
fmpz_poly_print(a2), flint_printf("\n\n");
abort();
}
fmpz_poly_clear(a1);
fmpz_poly_clear(a2);
fmpz_poly_clear(b);
fmpz_poly_clear(c);
fmpz_poly_clear(d);
}
/* Check _fmpz_poly_mul directly */
for (i = 0; i < 200 * flint_test_multiplier(); i++)
{
slong len1, len2;
fmpz_poly_t a, b, out1, out2;
len1 = n_randint(state, 100) + 1;
len2 = n_randint(state, 100) + 1;
fmpz_poly_init(a);
fmpz_poly_init(b);
fmpz_poly_init(out1);
fmpz_poly_init(out2);
fmpz_poly_randtest(a, state, len1, 200);
fmpz_poly_randtest(b, state, len2, 200);
fmpz_poly_mul(out1, a, b);
fmpz_poly_fit_length(a, a->alloc + n_randint(state, 10));
fmpz_poly_fit_length(b, b->alloc + n_randint(state, 10));
a->length = a->alloc;
b->length = b->alloc;
fmpz_poly_fit_length(out2, a->length + b->length - 1);
if (a->length >= b->length)
_fmpz_poly_mul(out2->coeffs, a->coeffs, a->length,
b->coeffs, b->length);
else
_fmpz_poly_mul(out2->coeffs, b->coeffs, b->length,
a->coeffs, a->length);
_fmpz_poly_set_length(out2, a->length + b->length - 1);
_fmpz_poly_normalise(out2);
result = (fmpz_poly_equal(out1, out2));
if (!result)
{
flint_printf("FAIL:\n");
fmpz_poly_print(out1), flint_printf("\n\n");
fmpz_poly_print(out2), flint_printf("\n\n");
abort();
}
fmpz_poly_clear(a);
fmpz_poly_clear(b);
fmpz_poly_clear(out1);
fmpz_poly_clear(out2);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}