108 lines
3.0 KiB
C
108 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) 2011 Fredrik Johansson
|
|
|
|
******************************************************************************/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <gmp.h>
|
|
#include "flint.h"
|
|
#include "fmpz.h"
|
|
#include "fmpz_vec.h"
|
|
#include "fmpz_mat.h"
|
|
#include "ulong_extras.h"
|
|
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
fmpz_mat_t A;
|
|
slong i, m;
|
|
|
|
fmpz_t det1, det2;
|
|
|
|
FLINT_TEST_INIT(state);
|
|
|
|
flint_printf("det_modular_accelerated....");
|
|
fflush(stdout);
|
|
|
|
for (i = 0; i < 1000 * flint_test_multiplier(); i++)
|
|
{
|
|
int proved = n_randlimb(state) % 2;
|
|
m = n_randint(state, 10);
|
|
|
|
fmpz_mat_init(A, m, m);
|
|
|
|
fmpz_init(det1);
|
|
fmpz_init(det2);
|
|
|
|
fmpz_mat_randtest(A, state, 1+n_randint(state,200));
|
|
|
|
fmpz_mat_det_bareiss(det1, A);
|
|
fmpz_mat_det_modular_accelerated(det2, A, proved);
|
|
|
|
if (!fmpz_equal(det1, det2))
|
|
{
|
|
flint_printf("FAIL:\n");
|
|
flint_printf("different determinants!\n");
|
|
fmpz_mat_print_pretty(A), flint_printf("\n");
|
|
flint_printf("det1: "), fmpz_print(det1), flint_printf("\n");
|
|
flint_printf("det2: "), fmpz_print(det2), flint_printf("\n");
|
|
abort();
|
|
}
|
|
|
|
fmpz_clear(det1);
|
|
fmpz_clear(det2);
|
|
fmpz_mat_clear(A);
|
|
}
|
|
|
|
for (i = 0; i < 10000; i++)
|
|
{
|
|
int proved = n_randlimb(state) % 2;
|
|
m = 2 + n_randint(state, 10);
|
|
fmpz_mat_init(A, m, m);
|
|
fmpz_init(det2);
|
|
|
|
fmpz_mat_randrank(A, state, 1+n_randint(state, m - 1),
|
|
1+n_randint(state, 10));
|
|
fmpz_mat_randops(A, state, n_randint(state, 2*m*m + 1));
|
|
|
|
fmpz_mat_det_modular_accelerated(det2, A, proved);
|
|
if (!fmpz_is_zero(det2))
|
|
{
|
|
flint_printf("FAIL:\n");
|
|
flint_printf("expected zero determinant!\n");
|
|
fmpz_mat_print_pretty(A), flint_printf("\n");
|
|
abort();
|
|
}
|
|
|
|
fmpz_mat_clear(A);
|
|
fmpz_clear(det2);
|
|
}
|
|
|
|
FLINT_TEST_CLEANUP(state);
|
|
|
|
flint_printf("PASS\n");
|
|
return 0;
|
|
}
|