1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
/*
Copyright (C) 2010 William Hart
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"
void
fmpz_mat_randtest(fmpz_mat_t mat, flint_rand_t state, flint_bitcnt_t bits)
{
// Adapted from nmod_vec_randtest
slong r, c, i, j, len;
slong sparseness;
r = mat->r;
c = mat->c;
len = r*c;
if (n_randint(state, 2))
{
for (i = 0; i < r; i++)
for (j = 0; j < c; j++)
fmpz_randtest(fmpz_mat_entry(mat, i, j), state, bits);
}
else
{
sparseness = 1 + n_randint(state, FLINT_MAX(2, len));
for (i = 0; i < r; i++)
{
for (j = 0; j < c; j++) {
if (n_randint(state, sparseness))
fmpz_zero(fmpz_mat_entry(mat, i, j));
else
fmpz_randtest(fmpz_mat_entry(mat, i, j), state, bits);
}
}
}
}