57 lines
1.7 KiB
C
57 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) 2011 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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#include "nmod_vec.h"
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void
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nmod_mat_addmul(nmod_mat_t D, const nmod_mat_t C,
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const nmod_mat_t A, const nmod_mat_t B)
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{
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slong m, k, n;
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m = A->r;
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k = A->c;
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n = B->c;
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if (m < NMOD_MAT_MUL_STRASSEN_CUTOFF ||
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n < NMOD_MAT_MUL_STRASSEN_CUTOFF ||
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k < NMOD_MAT_MUL_STRASSEN_CUTOFF)
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{
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_nmod_mat_mul_classical(D, C, A, B, 1);
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}
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else
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{
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nmod_mat_t tmp;
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nmod_mat_init(tmp, m, n, A->mod.n);
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nmod_mat_mul_strassen(tmp, A, B);
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nmod_mat_add(D, C, tmp);
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nmod_mat_clear(tmp);
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}
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}
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