pqc/external/flint-2.4.3/fmpz_factor/expand_iterative.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) 2010 Fredrik Johansson
******************************************************************************/
#include <gmp.h>
#include "flint.h"
#include "fmpz.h"
void
fmpz_factor_expand_iterative(fmpz_t n, const fmpz_factor_t factor)
{
slong i;
fmpz_t tmp;
fmpz_set_si(n, factor->sign);
fmpz_init(tmp);
for (i = 0; i < factor->num; i++)
{
fmpz_pow_ui(tmp, factor->p + i, factor->exp[i]);
fmpz_mul(n, n, tmp);
}
fmpz_clear(tmp);
}