1 /* mpz_get_si(integer) -- Return the least significant digit from INTEGER.
3 Copyright (C) 1991, 1993, 1994, 1995 Free Software Foundation, Inc.
5 This file is part of the GNU MP Library.
7 The GNU MP Library is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Library General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or (at your
10 option) any later version.
12 The GNU MP Library is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
15 License for more details.
17 You should have received a copy of the GNU Library General Public License
18 along with the GNU MP Library; see the file COPYING.LIB. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
20 MA 02111-1307, USA. */
27 mpz_get_si (mpz_srcptr op)
33 mp_size_t size = op->_mp_size;
34 mp_limb_t low_limb = op->_mp_d[0];
37 return low_limb % ((mp_limb_t) 1 << (BITS_PER_MP_LIMB - 1));
39 /* This convoluted expression is necessary to properly handle 0x80000000 */
40 return ~((low_limb - 1) % ((mp_limb_t) 1 << (BITS_PER_MP_LIMB - 1)));