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/*=============================================================================
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) 2012 Thomas M. DuBuisson
******************************************************************************/
#include "fmpz.h"
void fmpz_complement(fmpz_t r, const fmpz_t f)
{
if (!COEFF_IS_MPZ(*f)) /* f is small */
{
slong res = ~(*f);
fmpz_set_si(r, res);
} else /* f is big */
{
if(r != f) { /* not aliased */
__mpz_struct *ptr, *ptr2;
ptr = _fmpz_promote(r);
ptr2 = COEFF_TO_PTR(*f);
mpz_com(ptr, ptr2);
_fmpz_demote_val(r);
} else { /* alaised */
fmpz_t tmp;
__mpz_struct *ptr, *ptr2;
fmpz_init(tmp);
ptr = _fmpz_promote(tmp);
ptr2 = COEFF_TO_PTR(*f);
mpz_com(ptr, ptr2);
_fmpz_demote_val(tmp);
fmpz_set(r,tmp);
fmpz_clear(tmp);
}
}
}
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