pqc/external/flint-2.4.3/mpfr_mat/init.c

55 lines
1.8 KiB
C

/*=============================================================================
This file is part of FLINT.
FLINT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FLINT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FLINT; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
=============================================================================*/
/******************************************************************************
Copyright (C) 2010 William Hart
******************************************************************************/
#include <stdlib.h>
#include <gmp.h>
#include <mpfr.h>
#include "flint.h"
#include "mpfr_mat.h"
void
mpfr_mat_init(mpfr_mat_t mat, slong rows, slong cols, mpfr_prec_t prec)
{
if ((rows) && (cols)) /* Allocate space for r*c small entries */
{
slong i;
mat->entries =
(__mpfr_struct *) flint_malloc(rows * cols * sizeof(__mpfr_struct));
mat->rows = (__mpfr_struct **) flint_malloc(rows * sizeof(__mpfr_struct *)); /* Initialise rows */
for (i = 0; i < rows * cols; i++)
mpfr_init2(mat->entries + i, prec);
for (i = 0; i < rows; i++)
mat->rows[i] = mat->entries + i * cols;
}
else
mat->entries = NULL;
mat->r = rows;
mat->c = cols;
mat->prec = prec;
}