pqc/external/flint-2.4.3/fmpq_mat/test/t-det.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) 2011 Fredrik Johansson
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "fmpq.h"
#include "fmpq_mat.h"
int
main(void)
{
int i;
FLINT_TEST_INIT(state);
flint_printf("det....");
fflush(stdout);
for (i = 0; i < 100 * flint_test_multiplier(); i++)
{
fmpq_mat_t A, B, C;
fmpq_t a, b, ab, c;
slong n, bits;
n = n_randint(state, 10);
bits = 1 + n_randint(state, 100);
fmpq_mat_init(A, n, n);
fmpq_mat_init(B, n, n);
fmpq_mat_init(C, n, n);
fmpq_init(a);
fmpq_init(b);
fmpq_init(ab);
fmpq_init(c);
fmpq_mat_randtest(A, state, bits);
fmpq_mat_randtest(B, state, bits);
fmpq_mat_mul(C, A, B);
fmpq_mat_det(a, A);
fmpq_mat_det(b, B);
fmpq_mat_det(c, C);
fmpq_mul(ab, a, b);
if (!fmpq_equal(ab, c))
{
flint_printf("FAIL!\n");
flint_printf("A:\n");
fmpq_mat_print(A);
flint_printf("B:\n");
fmpq_mat_print(B);
flint_printf("C:\n");
fmpq_mat_print(C);
flint_printf("\ndet(A):\n");
fmpq_print(a);
flint_printf("\ndet(B):\n");
fmpq_print(b);
flint_printf("\ndet(C):\n");
fmpq_print(c);
abort();
}
fmpq_clear(a);
fmpq_clear(b);
fmpq_clear(ab);
fmpq_clear(c);
fmpq_mat_clear(A);
fmpq_mat_clear(B);
fmpq_mat_clear(C);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}