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/*
Copyright (C) 2011 Sebastian Pancratz
This file is part of FLINT.
FLINT is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version. See <https://www.gnu.org/licenses/>.
*/
#include "fmpz.h"
#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);
}
}