pqc/external/flint-2.4.3/ulong_extras/profile/p-mod_precomp.c
2014-05-24 23:16:06 +02:00

77 lines
2.1 KiB
C

/*=============================================================================
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 2009 William Hart
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include "profiler.h"
#include "flint.h"
#include "ulong_extras.h"
void sample(void * arg, ulong count)
{
mp_limb_t n, d, r, norm, bits;
double dpre;
ulong i;
mp_ptr array = (mp_ptr) flint_malloc(1000*sizeof(mp_limb_t));
FLINT_TEST_INIT(state);
for (i = 0; i < count; i++)
{
int j;
bits = n_randint(state, 53) + 1;
d = n_randbits(state, bits);
dpre = n_precompute_inverse(d);
for (j = 0; j < 1000; j++)
{
if (bits <= 32) array[j] = n_randint(state, d*d);
else array[j] = n_randtest(state);
}
prof_start();
for (j = 0; j < 1000; j++)
{
r = n_mod_precomp(array[j], d, dpre);
}
prof_stop();
}
flint_randclear(state);
flint_free(array);
}
int main(void)
{
double min, max;
prof_repeat(&min, &max, sample, NULL);
flint_printf("mod_precomp min time is %.3f cycles, max time is %.3f cycles\n",
(min/(double)FLINT_CLOCK_SCALE_FACTOR)/1000, (max/(double)FLINT_CLOCK_SCALE_FACTOR)/1000);
return 0;
}