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