49 lines
1.5 KiB
C
49 lines
1.5 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) 2010 Fredrik Johansson
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******************************************************************************/
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#include <stdlib.h>
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#include <gmp.h>
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#include "flint.h"
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#include "fmpz.h"
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#include "fmpz_poly.h"
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#include "mpn_extras.h"
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#include "ulong_extras.h"
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int flint_mpn_factor_trial(mp_srcptr x, mp_size_t xsize, slong start, slong stop)
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{
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slong i;
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const mp_limb_t * primes;
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primes = n_primes_arr_readonly(stop);
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for (i = start; i < stop; i++)
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{
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if (flint_mpn_divisible_1_p(x, xsize, primes[i]))
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return i;
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}
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return 0;
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}
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