1 /* mpz_get_si(integer) -- Return the least significant digit from INTEGER.
3 Copyright 1991, 1993, 1994, 1995, 2000, 2001, 2002, 2006 Free Software
6 This file is part of the GNU MP Library.
8 The GNU MP Library is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or (at your
11 option) any later version.
13 The GNU MP Library is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
16 License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
25 mpz_get_si (mpz_srcptr z)
28 mp_size_t size = z->_mp_size;
31 #if GMP_NAIL_BITS != 0
32 if (ULONG_MAX > GMP_NUMB_MAX && ABS (size) >= 2)
33 zl |= zp[1] << GMP_NUMB_BITS;
37 return (long) zl & LONG_MAX;
39 /* This expression is necessary to properly handle 0x80000000 */
40 return ~(((long) zl - 1L) & LONG_MAX);