159 lines
4.2 KiB
C
159 lines
4.2 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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Copyright 2013 Martin Lee
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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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#include "nmod_poly.h"
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typedef struct
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{
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slong n;
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slong s;
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slong alg;
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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 n = info->n, i, j, s= info->s, alg=info->alg;
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slong scale;
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FLINT_TEST_INIT(state);
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nmod_poly_t a, b, c, d, dinv;
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mp_limb_t m = n_randint(state, 1<<((48-FLINT_BIT_COUNT(n))/2)); /* modulus */
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if (m == 0) m = 2;
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nmod_poly_init2(a, m, n);
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nmod_poly_init2(b, m, n);
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nmod_poly_init2(c, m, 2*n - 1);
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nmod_poly_init2(d, m, s);
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nmod_poly_init2(dinv, m, s);
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for (i = 0; i < n; i++)
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{
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a->coeffs[i] = n_randint(state, m);
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b->coeffs[i] = n_randint(state, m);
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}
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for (i = 0; i < s; i++)
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d->coeffs[i] = n_randint(state, m);
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a->length = n;
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b->length = n;
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d->length = s;
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nmod_poly_reverse(dinv, d, s);
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nmod_poly_inv_series(dinv, dinv, s);
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scale = 1;
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if (n < 100000) scale = 10;
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if (n < 10000) scale = 100;
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if (n < 100) scale = 1000;
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for (i = 0; i < count; i++)
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{
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if (alg == 1)
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{
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prof_start();
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for (j = 0; j < scale; j++)
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{
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nmod_poly_mulmod_preinv(c, a, b, d, dinv);
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}
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prof_stop();
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}
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else
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{
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prof_start();
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for (j = 0; j < scale; j++)
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{
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nmod_poly_mulmod(c, a, b, d);
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}
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prof_stop();
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}
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if (c->coeffs[n - 2] == 123) abort();
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}
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nmod_poly_clear(a);
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nmod_poly_clear(b);
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nmod_poly_clear(c);
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nmod_poly_clear(d);
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nmod_poly_clear(dinv);
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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 i, k, scale;
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for (k = 2; k <= 30; k++)
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{
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info.n = 1<<k;
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for (i= 0; i < 3; i++)
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{
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if (i == 0)
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info.s= info.n+1;
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else if (i== 1)
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info.s= info.n+ ((1<<k+1)-(1<<k))/2*i;
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else if (i== 2)
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info.s= info.n*2-1;
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scale = 1;
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if (info.n < 100000) scale = 10;
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if (info.n < 10000) scale = 100;
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if (info.n < 100) scale = 1000;
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info.alg= 1;
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prof_repeat(&min, &max, sample, (void *) &info);
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flint_printf("length %wd, modulus degree %wd, min %.3g ms, max %.3g ms, norm %.3g\n",
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info.n, info.s,
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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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(((min/(double)FLINT_CLOCK_SCALE_FACTOR)/scale)/2400000.0)
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*500000.0/info.n/FLINT_BIT_COUNT(info.n)
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);
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info.alg= 2;
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prof_repeat(&min, &max, sample, (void *) &info);
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flint_printf("length %wd, modulus degree %wd, min %.3g ms, max %.3g ms, norm %.3g\n",
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info.n, info.s,
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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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(((min/(double)FLINT_CLOCK_SCALE_FACTOR)/scale)/2400000.0)
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*500000.0/info.n/FLINT_BIT_COUNT(info.n)
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);
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}
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}
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return 0;
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}
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