pqc/external/flint-2.4.3/fmpq_poly/test/t-rem_powers_precomp.c

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2014-05-18 22:03:37 +00:00
/*=============================================================================
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 "fmpq_poly.h"
#include "ulong_extras.h"
int
main(void)
{
int i, result;
ulong cflags = UWORD(0);
FLINT_TEST_INIT(state);
flint_printf("rem_powers_precomp....");
fflush(stdout);
/* Check aliasing of q and a */
for (i = 0; i < 50 * flint_test_multiplier(); i++)
{
fmpq_poly_t a, b, r;
fmpq_poly_powers_precomp_t binv;
fmpq_poly_init(a);
fmpq_poly_init(b);
fmpq_poly_init(r);
fmpq_poly_randtest(a, state, n_randint(state, 50), 100);
fmpq_poly_randtest_not_zero(b, state, n_randint(state, 50) + 1, 100);
fmpq_poly_powers_precompute(binv, b);
fmpq_poly_rem_powers_precomp(r, a, b, binv);
fmpq_poly_rem_powers_precomp(a, a, b, binv);
result = (fmpq_poly_equal(r, a));
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("r = "), fmpq_poly_debug(r), flint_printf("\n\n");
flint_printf("a = "), fmpq_poly_debug(a), flint_printf("\n\n");
flint_printf("b = "), fmpq_poly_debug(b), flint_printf("\n\n");
flint_printf("cflags = %wu\n\n", cflags);
abort();
}
fmpq_poly_powers_clear(binv);
fmpq_poly_clear(a);
fmpq_poly_clear(b);
fmpq_poly_clear(r);
}
/* Check aliasing of q and b */
for (i = 0; i < 50 * flint_test_multiplier(); i++)
{
fmpq_poly_t a, b, r;
fmpq_poly_powers_precomp_t binv;
fmpq_poly_init(a);
fmpq_poly_init(b);
fmpq_poly_init(r);
fmpq_poly_randtest(a, state, n_randint(state, 50), 100);
fmpq_poly_randtest_not_zero(b, state, n_randint(state, 50) + 1, 100);
fmpq_poly_powers_precompute(binv, b);
fmpq_poly_rem_powers_precomp(r, a, b, binv);
fmpq_poly_rem_powers_precomp(b, a, b, binv);
result = (fmpq_poly_equal(r, b));
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("r = "), fmpq_poly_debug(r), flint_printf("\n\n");
flint_printf("a = "), fmpq_poly_debug(a), flint_printf("\n\n");
flint_printf("b = "), fmpq_poly_debug(b), flint_printf("\n\n");
flint_printf("cflags = %wu\n\n", cflags);
abort();
}
fmpq_poly_powers_clear(binv);
fmpq_poly_clear(a);
fmpq_poly_clear(b);
fmpq_poly_clear(r);
}
/* Compare with divrem */
for (i = 0; i < 50 * flint_test_multiplier(); i++)
{
fmpq_poly_t a, b, q, r2, r;
fmpq_poly_powers_precomp_t binv;
fmpq_poly_init(a);
fmpq_poly_init(b);
fmpq_poly_init(q);
fmpq_poly_init(r2);
fmpq_poly_init(r);
fmpq_poly_randtest(a, state, n_randint(state, 50), 100);
fmpq_poly_randtest_not_zero(b, state, n_randint(state, 50) + 1, 100);
fmpq_poly_powers_precompute(binv, b);
fmpq_poly_divrem(q, r, a, b);
fmpq_poly_rem_powers_precomp(r2, a, b, binv);
fmpq_poly_canonicalise(r2);
result = (fmpq_poly_equal(r, r2));
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("a = "), fmpq_poly_debug(a), flint_printf("\n\n");
flint_printf("b = "), fmpq_poly_debug(b), flint_printf("\n\n");
flint_printf("q = "), fmpq_poly_debug(q), flint_printf("\n\n");
flint_printf("r = "), fmpq_poly_debug(r), flint_printf("\n\n");
flint_printf("r2 = "), fmpq_poly_debug(r2), flint_printf("\n\n");
flint_printf("cflags = %wu\n\n", cflags);
abort();
}
fmpq_poly_powers_clear(binv);
fmpq_poly_clear(a);
fmpq_poly_clear(b);
fmpq_poly_clear(q);
fmpq_poly_clear(r2);
fmpq_poly_clear(r);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}