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/*
Copyright (C) 2010 William Hart
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 "fmpq_mat.h"
void fmpq_mat_init(fmpq_mat_t mat, slong rows, slong cols)
{
slong i;
if (rows != 0)
mat->rows = flint_malloc(rows * sizeof(fmpq *));
else
mat->rows = NULL;
mat->r = rows;
mat->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);
mat->entries = flint_calloc(num, sizeof(fmpq));
/* Set denominators */
for (i = 0; i < rows * cols; i++)
mat->entries[i].den = WORD(1);
for (i = 0; i < rows; i++)
mat->rows[i] = mat->entries + i * cols;
}
else
{
mat->entries = NULL;
if (rows != 0)
{
for (i = 0; i < rows; i++)
mat->rows[i] = NULL;
}
}
}