mirror of
https://review.haiku-os.org/buildtools
synced 2025-02-23 06:07:41 +01:00
4c74403188
Change-Id: Iae65e95cfa0d92091b8b0a424ae36d88efa76aa9 Reviewed-on: https://review.haiku-os.org/c/buildtools/+/3020 Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
/* int mpz_fits_X_p (mpz_t z) -- test whether z fits signed type X.
|
|
|
|
Copyright 1997, 2000-2002 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 either:
|
|
|
|
* 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.
|
|
|
|
or
|
|
|
|
* 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.
|
|
|
|
or both in parallel, as here.
|
|
|
|
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 General Public License
|
|
for more details.
|
|
|
|
You should have received copies of the GNU General Public License and the
|
|
GNU Lesser General Public License along with the GNU MP Library. If not,
|
|
see https://www.gnu.org/licenses/. */
|
|
|
|
#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 <= NEG_CAST (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 <= NEG_CAST (mp_limb_t, MINIMUM);
|
|
}
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|