pqc/external/flint-2.4.3/fmpz/rfac_uiui.c
2014-05-24 23:16:06 +02:00

60 lines
1.6 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 (C) 2011 Fredrik Johansson
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "ulong_extras.h"
#include "fmpz.h"
void
fmpz_rfac_uiui(fmpz_t r, ulong x, ulong n)
{
if (n == 0)
{
fmpz_one(r);
}
else if (n == 1)
{
fmpz_set_ui(r, x);
}
else if (x == 0)
{
fmpz_zero(r);
}
else if (x <= COEFF_MAX)
{
_fmpz_rfac_ui(r, (fmpz *) &x, 0, n);
}
else
{
fmpz_t tmp;
fmpz_init_set_ui(tmp, x);
fmpz_rfac_ui(r, tmp, n);
fmpz_clear(tmp);
}
}