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
/*
Copyright (C) 2011 Fredrik Johansson
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_poly.h"
#include "fmpz_poly_mat.h"
slong
fmpz_poly_mat_max_bits(const fmpz_poly_mat_t A)
{
slong i, j, bits, max;
int sign;
max = 0;
sign = 0;
for (i = 0; i < A->r; i++)
{
for (j = 0; j < A->c; j++)
{
bits = fmpz_poly_max_bits(fmpz_poly_mat_entry(A, i, j));
if (bits < 0)
{
sign = 1;
max = FLINT_MAX(max, -bits);
}
else
max = FLINT_MAX(max, bits);
}
}
return sign ? -max : max;
}