Annotation of OpenXM/src/kan96xx/gmp-2.0.2-ssh-2/mpz/popcount.c, Revision 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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