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hamdist.c revision 1.1
      1  1.1  mrg /* Cray mpn_hamdist -- hamming distance count.
      2  1.1  mrg 
      3  1.1  mrg Copyright 2000 Free Software Foundation, Inc.
      4  1.1  mrg 
      5  1.1  mrg This file is part of the GNU MP Library.
      6  1.1  mrg 
      7  1.1  mrg The GNU MP Library is free software; you can redistribute it and/or modify
      8  1.1  mrg it under the terms of the GNU Lesser General Public License as published by
      9  1.1  mrg the Free Software Foundation; either version 3 of the License, or (at your
     10  1.1  mrg option) any later version.
     11  1.1  mrg 
     12  1.1  mrg The GNU MP Library is distributed in the hope that it will be useful, but
     13  1.1  mrg WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
     14  1.1  mrg or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
     15  1.1  mrg License for more details.
     16  1.1  mrg 
     17  1.1  mrg You should have received a copy of the GNU Lesser General Public License
     18  1.1  mrg along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.  */
     19  1.1  mrg 
     20  1.1  mrg #include <intrinsics.h>
     21  1.1  mrg #include "gmp.h"
     22  1.1  mrg #include "gmp-impl.h"
     23  1.1  mrg 
     24  1.1  mrg unsigned long int
     25  1.1  mrg mpn_hamdist (mp_srcptr p1, mp_srcptr p2, mp_size_t n)
     26  1.1  mrg {
     27  1.1  mrg   unsigned long int result = 0;
     28  1.1  mrg   mp_size_t i;
     29  1.1  mrg   for (i = 0; i < n; i++)
     30  1.1  mrg     result += _popcnt (p1[i] ^ p2[i]);
     31  1.1  mrg   return result;
     32  1.1  mrg }
     33