117 lines
3.1 KiB
C
117 lines
3.1 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 2009 William Hart
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Copyright 2010,2011 Fredrik Johansson
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******************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include "profiler.h"
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#include "flint.h"
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#include "fmpz_mat.h"
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#include "fmpz.h"
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#include "ulong_extras.h"
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typedef struct
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{
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ulong dim;
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int algorithm;
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slong bits;
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} mat_mul_t;
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void sample(void * arg, ulong count)
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{
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mat_mul_t * params = (mat_mul_t *) arg;
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ulong i, dim = params->dim;
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slong bits = params->bits;
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int algorithm = params->algorithm;
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flint_rand_t rnd;
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fmpz_mat_t A;
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fmpz_t d;
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FLINT_TEST_INIT(state);
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fmpz_mat_init(A, dim, dim);
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fmpz_init(d);
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fmpz_mat_randtest(A, state, bits);
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prof_start();
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if (algorithm == 0)
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for (i = 0; i < count; i++)
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fmpz_mat_det_bareiss(d, A);
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else if (algorithm == 1)
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for (i = 0; i < count; i++)
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fmpz_mat_det_modular(d, A, 1);
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else if (algorithm == 2)
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for (i = 0; i < count; i++)
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fmpz_mat_det_modular_accelerated(d, A, 1);
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prof_stop();
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fmpz_mat_clear(A);
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fmpz_clear(d);
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flint_randclear(state);
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}
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int main(void)
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{
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double min_default, min_classical, min_modular, min_modular_2, max;
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mat_mul_t params;
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slong dim, bits;
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params.bits = 200;
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for (bits = 2; bits <= 4096; bits *= 2)
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{
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params.bits = bits;
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flint_printf("fmpz_mat_det (bits = %wd):\n", params.bits);
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for (dim = 2; dim <= 512; dim = (slong) ((double) dim * 1.1) + 1)
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{
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params.dim = dim;
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params.algorithm = 0;
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prof_repeat(&min_classical, &max, sample, ¶ms);
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params.algorithm = 1;
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prof_repeat(&min_modular, &max, sample, ¶ms);
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params.algorithm = 2;
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prof_repeat(&min_modular_2, &max, sample, ¶ms);
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flint_printf("dim = %wd classical/modular/acc. %.2f %.2f %.2f (us)\n",
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dim, min_classical, min_modular, min_modular_2);
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if (min_modular > 1.1*min_modular_2)
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break;
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}
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}
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return 0;
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}
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