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/*=============================================================================
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) 2008, 2009 William Hart.
Copyright (C) 2008, Richard Howell-Peak
Copyright (C) 2008, Martin Albrecht
Copyright (C) 2010, Fredrik Johansson
******************************************************************************/
#include <stdlib.h>
#include <mpir.h>
#include "flint.h"
#include "nmod_mat.h"
void
nmod_mat_window_init(nmod_mat_t window, const nmod_mat_t mat,
long r1, long c1, long r2, long c2)
{
long i;
window->entries = NULL;
window->rows = flint_malloc((r2 - r1) * sizeof(mp_limb_t *));
for (i = 0; i < r2 - r1; i++)
window->rows[i] = mat->rows[r1 + i] + c1;
window->r = r2 - r1;
window->c = c2 - c1;
window->mod = mat->mod;
}
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