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/* 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 3 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. If not, see http://www.gnu.org/licenses/. */
#include "gmp.h"
#include "gmp-impl.h"
int
FUNCTION (mpz_srcptr z) __GMP_NOTHROW
{
mp_size_t n = SIZ(z);
mp_ptr p = PTR(z);
mp_limb_t limb = p[0];
if (n == 0)
return 1;
if (n == 1)
return limb <= MAXIMUM;
if (n == -1)
return limb <= - (mp_limb_t) MINIMUM;
#if GMP_NAIL_BITS != 0
{
if ((p[1] >> GMP_NAIL_BITS) == 0)
{
limb += p[1] << GMP_NUMB_BITS;
if (n == 2)
return limb <= MAXIMUM;
if (n == -2)
return limb <= - (mp_limb_t) MINIMUM;
}
}
#endif
return 0;
}
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