pqc/external/flint-2.4.3/ulong_extras/profile/p-factor_pp1.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 2012 William Hart
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include "profiler.h"
#include "flint.h"
#include "ulong_extras.h"
int main(void)
{
ulong c;
ulong B1;
mp_limb_t n, p;
FLINT_TEST_INIT(state);
while(1)
{
flint_printf("Enter number to be factored: "); fflush(stdout);
if (!flint_scanf("%wu", &n))
{
flint_printf("Read failed\n");
abort();
}
flint_printf("Enter B1: "); fflush(stdout);
if (!flint_scanf("%wu", &B1))
{
flint_printf("Read failed\n");
abort();
}
do
{
c = n_randint(state, n);
} while (c <= UWORD(2));
p = n_factor_pp1(n, B1, c);
if (p >= 2)
flint_printf("Factor: %wu\n", p);
else
flint_printf("Factor not found!\n");
} while(1);
flint_randclear(state);
return 0;
}