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/*
Copyright (C) 2008, 2009 William Hart.
Copyright (C) 2008, Richard Howell-Peak
Copyright (C) 2008, Martin Albrecht
Copyright (C) 2010, Fredrik Johansson
Copyright (C) 2013 Mike Hansen
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/>.
*/
#ifdef T
#include "templates.h"
void
TEMPLATE(T, mat_window_init) (TEMPLATE(T, mat_t) window,
const TEMPLATE(T, mat_t) mat,
slong r1, slong c1, slong r2, slong c2,
const TEMPLATE(T, ctx_t) FLINT_UNUSED(ctx))
{
slong i;
window->entries = NULL;
if (r2 > r1)
window->rows = (TEMPLATE(T, struct) **) flint_malloc((r2 - r1)
* sizeof(TEMPLATE(T, struct) *));
else
window->rows = NULL;
if (mat->c > 0)
{
for (i = 0; i < r2 - r1; i++)
window->rows[i] = mat->rows[r1 + i] + c1;
} else
{
for (i = 0; i < r2 - r1; i++)
window->rows[i] = NULL;
}
window->r = r2 - r1;
window->c = c2 - c1;
}
#endif