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/*
Copyright (C) 2010 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_vec.h"
#include "fmpz_mat.h"
slong
fmpz_mat_max_bits(const fmpz_mat_t mat)
{
slong i;
slong bits, row_bits, sign;
sign = 1;
bits = 0;
if (mat->r == 0 || mat->c == 0)
return 0;
for (i = 0; i < mat->r; i++)
{
row_bits = _fmpz_vec_max_bits(fmpz_mat_row(mat, i), mat->c);
if (row_bits < 0)
{
row_bits = -row_bits;
sign = -1;
}
bits = FLINT_MAX(bits, row_bits);
}
return bits * sign;
}