69 lines
2.0 KiB
C
69 lines
2.0 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 Sebastian Pancratz
|
|
|
|
******************************************************************************/
|
|
|
|
#include "fmpz_mat.h"
|
|
#include "padic_mat.h"
|
|
|
|
void padic_mat_randtest(padic_mat_t mat, flint_rand_t state, const padic_ctx_t ctx)
|
|
{
|
|
if (!padic_mat_is_empty(mat))
|
|
{
|
|
const slong N = padic_mat_prec(mat);
|
|
|
|
slong i, j, min, max;
|
|
fmpz_t pow;
|
|
|
|
if (N > 0)
|
|
{
|
|
min = - ((N + 9) / 10);
|
|
max = N;
|
|
}
|
|
else if (N < 0)
|
|
{
|
|
min = N - ((-N + 9) / 10);
|
|
max = N;
|
|
}
|
|
else /* ctx->N == 0 */
|
|
{
|
|
min = -10;
|
|
max = 0;
|
|
}
|
|
|
|
padic_mat_val(mat) = n_randint(state, max - min) + min;
|
|
|
|
fmpz_init(pow);
|
|
fmpz_pow_ui(pow, ctx->p, N - padic_mat_val(mat));
|
|
|
|
for (i = 0; i < padic_mat(mat)->r; i++)
|
|
for (j = 0; j < padic_mat(mat)->c; j++)
|
|
fmpz_randm(padic_mat_entry(mat, i, j), state, pow);
|
|
|
|
fmpz_clear(pow);
|
|
|
|
_padic_mat_canonicalise(mat, ctx);
|
|
}
|
|
}
|
|
|