61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/*=============================================================================
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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 Fredrik Johansson
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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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mp_bitcnt_t fmpz_val2(const fmpz_t x)
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{
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fmpz c = *x;
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mp_bitcnt_t t;
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if (!COEFF_IS_MPZ(c))
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{
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if (c == 0)
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t = 0;
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else
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count_trailing_zeros(t, FLINT_ABS(c));
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}
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else
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{
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mp_limb_t *d = (COEFF_TO_PTR(c))->_mp_d;
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mp_bitcnt_t u;
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t = 0;
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while (*d == 0)
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{
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d++;
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t += FLINT_BITS;
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}
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count_trailing_zeros(u, *d);
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t += u;
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}
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return t;
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}
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