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/*
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 "long_extras.h"
#include "nmod_poly.h"
#include "nmod_poly_mat.h"
void
nmod_poly_mat_init(nmod_poly_mat_t A, slong rows, slong cols, ulong n)
{
slong i;
if (rows > 0)
A->rows = flint_malloc(rows * sizeof(nmod_poly_struct *));
else
A->rows = NULL;
A->modulus = n;
A->r = rows;
A->c = cols;
if (rows > 0 && cols > 0)
{
slong num;
int of;
of = z_mul_checked(&num, rows, cols);
if (of)
flint_throw(FLINT_ERROR, "Overflow creating a %wd x %wd object\n", rows, cols);
A->entries = flint_malloc(num * sizeof(nmod_poly_struct));
for (i = 0; i < rows * cols; i++)
nmod_poly_init(A->entries + i, n);
for (i = 0; i < rows; i++)
A->rows[i] = A->entries + i * cols;
}
else
{
A->entries = NULL;
if (rows > 0)
{
for (i = 0; i < rows; i++)
A->rows[i] = NULL;
}
}
}