93 lines
2.9 KiB
C
93 lines
2.9 KiB
C
|
/* int mpz_fits_X_p (mpz_t z) -- test whether z fits signed type X.
|
||
|
|
|
||
|
|
Copyright 1997, 2000, 2001, 2002 Free Software Foundation, Inc.
|
||
|
|
|
||
|
|
This file is part of the GNU MP Library.
|
||
|
|
|
||
|
|
The GNU MP Library is free software; you can redistribute it and/or modify
|
||
|
|
it under the terms of the GNU Lesser General Public License as published by
|
||
|
|
the Free Software Foundation; either version 2.1 of the License, or (at your
|
||
|
|
option) any later version.
|
||
|
|
|
||
|
|
The GNU MP Library 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 Lesser General Public
|
||
|
|
License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Lesser General Public License
|
||
|
|
along with the GNU MP Library; see the file COPYING.LIB. If not, write to
|
||
|
|
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
||
|
|
MA 02110-1301, USA. */
|
||
|
|
|
||
|
|
#include <gmp.h>
|
||
|
|
#include "flint.h"
|
||
|
|
#include "fmpz.h"
|
||
|
|
|
||
|
|
#if defined(_WIN64)
|
||
|
|
|
||
|
|
#define FLINT_UI_MAX ((mp_limb_t)(~(mp_limb_t)0))
|
||
|
|
#define FLINT_UI_HIBIT (FLINT_UI_MAX ^ (FLINT_UI_MAX >> 1))
|
||
|
|
#define FLINT_SI_MAX ((mp_limb_signed_t)(FLINT_UI_MAX ^ FLINT_UI_HIBIT))
|
||
|
|
#define FLINT_SI_MIN ((mp_limb_signed_t)FLINT_UI_HIBIT)
|
||
|
|
|
||
|
|
int
|
||
|
|
flint_mpz_fits_si_p(mpz_srcptr z)
|
||
|
|
{
|
||
|
|
mp_size_t n = z->_mp_size;
|
||
|
|
mp_ptr p = z->_mp_d;
|
||
|
|
mp_limb_t limb = p[0];
|
||
|
|
|
||
|
|
if (n == 0)
|
||
|
|
return 1;
|
||
|
|
if (n == 1)
|
||
|
|
return limb <= FLINT_SI_MAX;
|
||
|
|
if (n == -1)
|
||
|
|
return limb <= - (mp_limb_t) FLINT_SI_MIN;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*=============================================================================
|
||
|
|
|
||
|
|
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) 2011 Sebastian Pancratz
|
||
|
|
Copyright (C) 2013 William Hart
|
||
|
|
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
int fmpz_fits_si(const fmpz_t f)
|
||
|
|
{
|
||
|
|
if (!COEFF_IS_MPZ(*f))
|
||
|
|
{
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
#if defined(_WIN64)
|
||
|
|
return flint_mpz_fits_si_p(COEFF_TO_PTR(*f));
|
||
|
|
#else
|
||
|
|
return mpz_fits_slong_p(COEFF_TO_PTR(*f));
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|