Annotation of OpenXM/src/kan96xx/gmp-2.0.2-ssh-2/mpz/popcount.c, Revision 1.1.1.1
1.1 takayama 1: /* mpz_popcount(mpz_ptr op) -- Population count of OP. If the operand is
2: negative, return ~0 (a novel representation of infinity).
3:
4: Copyright (C) 1994, 1996 Free Software Foundation, Inc.
5:
6: This file is part of the GNU MP Library.
7:
8: The GNU MP Library is free software; you can redistribute it and/or modify
9: it under the terms of the GNU Library General Public License as published by
10: the Free Software Foundation; either version 2 of the License, or (at your
11: option) any later version.
12:
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 Library General Public
16: License for more details.
17:
18: You should have received a copy of the GNU Library General Public License
19: along with the GNU MP Library; see the file COPYING.LIB. If not, write to
20: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
21: MA 02111-1307, USA. */
22:
23: #include "gmp.h"
24: #include "gmp-impl.h"
25:
26: unsigned long int
27: #if __STDC__
28: mpz_popcount (mpz_srcptr u)
29: #else
30: mpz_popcount (u)
31: mpz_srcptr u;
32: #endif
33: {
34: mp_size_t usize;
35:
36: usize = u->_mp_size;
37:
38: if ((usize) < 0)
39: return ~ (unsigned long int) 0;
40:
41: return mpn_popcount (u->_mp_d, usize);
42: }
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