65 lines
1.7 KiB
C
65 lines
1.7 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) 2011 Sebastian Pancratz
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******************************************************************************/
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#include <gmp.h>
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#include "flint.h"
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#include "ulong_extras.h"
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#include "fmpz.h"
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int fmpz_divisible(const fmpz_t x, const fmpz_t p)
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{
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fmpz y = *x;
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fmpz q = *p;
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if (y == WORD(0))
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{
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return 1;
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}
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if (!COEFF_IS_MPZ(y))
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{
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if (!COEFF_IS_MPZ(q))
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{
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return !(y % q);
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}
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else
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{
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return 0;
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}
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}
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else
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{
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if (!COEFF_IS_MPZ(q))
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{
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return flint_mpz_divisible_ui_p(COEFF_TO_PTR(y), q);
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}
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else
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{
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return mpz_divisible_p(COEFF_TO_PTR(y), COEFF_TO_PTR(q));
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}
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}
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}
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