108 lines
2.9 KiB
C
108 lines
2.9 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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******************************************************************************/
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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 "ulong_extras.h"
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#define ITERS 1000
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typedef struct
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{
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ulong * composites;
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mp_bitcnt_t bits;
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} fac_one_line_t;
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void sample(void * arg, ulong count)
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{
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fac_one_line_t * params = (fac_one_line_t *) arg;
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mp_bitcnt_t bits = params->bits;
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ulong i, j, res, primes = (WORD(1)<<(bits/3))/10 + 1;
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n_factor_t factors;
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mp_limb_t n2;
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for (i = 0; i < count; i++)
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{
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prof_start();
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for (j = 0; j < ITERS; j++)
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{
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/*n_factor_init(&factors);
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n_factor(&factors, params->composites[j & 1023], 0);
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if ((factors.num == 0) || (factors.num == 1 && factors.exp[0] < 2))
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flint_printf("Error %wd\n", params->composites[j & 1023]);*/
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n2 = n_factor_lehman(params->composites[j & 1023]);
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if (n2 == params->composites[j & 1023])
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flint_printf("Error n = %wd\n", params->composites[j & 1023]);
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}
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prof_stop();
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}
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}
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void fill_array(ulong * ret, mp_bitcnt_t bits, flint_rand_t state)
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{
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ulong n;
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n_factor_t factors;
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ulong i, primes = (1<<(bits/3))/10 + 1;
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for (i = 0; i < 1024; i++)
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{
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do
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{
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n_factor_init(&factors);
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n = n_randbits(state, bits);
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} while (n_is_probabprime(n) || (n_factor_trial(&factors, n, primes) != n));
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ret[i] = n;
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}
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}
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int main(void)
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{
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double min, max;
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fac_one_line_t params;
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FLINT_TEST_INIT(state);
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int i;
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params.composites = flint_malloc(1024*sizeof(ulong));
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flint_printf("factor_one_line:\n");
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for (i = 4; i <= 64; i++)
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{
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fill_array(params.composites, i, state);
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params.bits = i;
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prof_repeat(&min, &max, sample, ¶ms);
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flint_printf("bits = %d, time is %.3f us\n",
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i, max/(double)ITERS);
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}
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flint_randclear(state);
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flint_free(params.composites);
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return 0;
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}
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