56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
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/*=============================================================================
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This file is part of FLINT.
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FLINT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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FLINT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FLINT; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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=============================================================================*/
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/******************************************************************************
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Copyright (C) 2012 Thomas M. DuBuisson
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******************************************************************************/
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#include "fmpz.h"
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void fmpz_complement(fmpz_t r, const fmpz_t f)
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{
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if (!COEFF_IS_MPZ(*f)) /* f is small */
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{
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slong res = ~(*f);
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fmpz_set_si(r, res);
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} else /* f is big */
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{
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if(r != f) { /* not aliased */
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__mpz_struct *ptr, *ptr2;
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ptr = _fmpz_promote(r);
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ptr2 = COEFF_TO_PTR(*f);
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mpz_com(ptr, ptr2);
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_fmpz_demote_val(r);
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} else { /* alaised */
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fmpz_t tmp;
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__mpz_struct *ptr, *ptr2;
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fmpz_init(tmp);
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ptr = _fmpz_promote(tmp);
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ptr2 = COEFF_TO_PTR(*f);
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mpz_com(ptr, ptr2);
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_fmpz_demote_val(tmp);
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fmpz_set(r,tmp);
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fmpz_clear(tmp);
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}
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}
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}
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