127 lines
3.1 KiB
C
127 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 2010 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 <math.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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#include "fmpz.h"
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typedef struct
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{
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slong limbs;
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int algo;
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} info_t;
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void sample(void * arg, ulong count)
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{
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info_t * info = (info_t *) arg;
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slong limbs = info->limbs, i, j;
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int algo = info->algo;
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int scale = 200;
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FLINT_TEST_INIT(state);
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fmpz_t a, b, c, r;
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fmpz_preinvn_t inv;
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fmpz_init(a);
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fmpz_init(b);
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fmpz_init(c);
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fmpz_init(r);
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for (i = 0; i < count; i++)
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{
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fmpz_randbits(a, state, (2*limbs - 1)*FLINT_BITS);
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fmpz_randbits(b, state, limbs*FLINT_BITS);
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fmpz_preinvn_init(inv, b);
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prof_start();
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if (algo == 1)
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{
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for (j = 0; j < scale; j++)
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{
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fmpz_fdiv_qr_preinvn(c, r, a, b, inv);
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}
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} else
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{
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for (j = 0; j < scale; j++)
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{
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fmpz_fdiv_qr(c, r, a, b);
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}
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}
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prof_stop();
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}
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fmpz_preinvn_clear(inv);
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fmpz_clear(a);
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fmpz_clear(b);
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fmpz_clear(c);
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fmpz_clear(r);
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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, max;
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info_t info;
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slong k, scale;
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printf("1: With precomputed inverse\n");
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printf("2: Without precomputed inverse\n\n");
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for (k = 1; k <= 10000; k = (slong) ceil(1.1*k))
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{
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info.limbs = k;
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info.algo = 1;
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scale = 200;
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prof_repeat(&min, &max, sample, (void *) &info);
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flint_printf("1: limbs %wd, min %.3g ms, max %.3g ms\n",
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info.limbs,
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((min/(double)FLINT_CLOCK_SCALE_FACTOR)/scale)/2400000.0,
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((max/(double)FLINT_CLOCK_SCALE_FACTOR)/scale)/2400000.0
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);
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info.algo = 2;
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prof_repeat(&min, &max, sample, (void *) &info);
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flint_printf("2: limbs %wd, min %.3g ms, max %.3g ms\n\n",
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info.limbs,
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((min/(double)FLINT_CLOCK_SCALE_FACTOR)/scale)/2400000.0,
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((max/(double)FLINT_CLOCK_SCALE_FACTOR)/scale)/2400000.0
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);
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}
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return 0;
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}
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