pqc/external/flint-2.4.3/nmod_poly_factor/profile/p-factorbench.c

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2014-05-18 22:03:37 +00:00
/*=============================================================================
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) 2013 Martin Lee
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#include <gmp.h>
#include "flint.h"
#include "nmod_poly.h"
int main (void)
{
double t;
nmod_poly_t f, g, h;
for (int i= 15001;i < 16000; i++)
{
nmod_poly_init2 (f, 17, i/2+1);
nmod_poly_init2 (g, 17, i+1);
nmod_poly_set_coeff_ui (f, i/2, 1);
nmod_poly_set_coeff_ui (f, 1, 1);
nmod_poly_set_coeff_ui (f, 0, ((i%17)*(i%17)+3) % 17);
nmod_poly_set_coeff_ui (g, i, 1);
nmod_poly_set_coeff_ui (g, i/2+1, 1);
nmod_poly_set_coeff_ui (g, 1, ((i % 17)+1)%17);
nmod_poly_set_coeff_ui (g, 0, 15);
nmod_poly_init (h, 17);
nmod_poly_gcd (h, f, g);
if (!nmod_poly_is_one (h))
{
flint_printf ("i= %d\n", i);
nmod_poly_factor_t factors;
nmod_poly_factor_init (factors);
t= clock();
nmod_poly_factor (factors, h);
t = (clock() - t) / CLOCKS_PER_SEC;
flint_printf("factorization %.2lf\n", t);
nmod_poly_factor_clear (factors);
}
nmod_poly_clear (f);
nmod_poly_clear (g);
nmod_poly_clear (h);
}
return EXIT_SUCCESS;
}