50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
/*=============================================================================
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This file is part of FLINT.
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FLINT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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FLINT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FLINT; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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=============================================================================*/
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/******************************************************************************
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Copyright (C) 2008, 2009 William Hart.
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Copyright (C) 2008, Richard Howell-Peak
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Copyright (C) 2008, Martin Albrecht
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Copyright (C) 2010, Fredrik Johansson
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******************************************************************************/
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#include <stdlib.h>
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#include <gmp.h>
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#include "flint.h"
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#include "nmod_mat.h"
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void
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nmod_mat_window_init(nmod_mat_t window, const nmod_mat_t mat,
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slong r1, slong c1, slong r2, slong c2)
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{
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slong i;
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window->entries = NULL;
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window->rows = flint_malloc((r2 - r1) * sizeof(mp_limb_t *));
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for (i = 0; i < r2 - r1; i++)
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window->rows[i] = mat->rows[r1 + i] + c1;
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window->r = r2 - r1;
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window->c = c2 - c1;
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window->mod = mat->mod;
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}
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