54 lines
1.7 KiB
C
54 lines
1.7 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 "flint.h"
|
|
#include "nmod_poly.h"
|
|
#include "nmod_poly_mat.h"
|
|
#include "ulong_extras.h"
|
|
|
|
void
|
|
nmod_poly_mat_randtest_sparse(nmod_poly_mat_t A, flint_rand_t state, slong len,
|
|
float density)
|
|
{
|
|
slong i, j;
|
|
|
|
for (i = 0; i < A->r; i++)
|
|
{
|
|
for (j = 0; j < A->c; j++)
|
|
{
|
|
if (n_randint(state, 1000) < density * 1000)
|
|
{
|
|
slong l = n_randint(state, len + 1);
|
|
l = FLINT_MAX(l, 1);
|
|
nmod_poly_randtest(nmod_poly_mat_entry(A, i, j), state, l);
|
|
}
|
|
else
|
|
{
|
|
nmod_poly_zero(nmod_poly_mat_entry(A, i, j));
|
|
}
|
|
}
|
|
}
|
|
}
|