Subversion Repositories openrisc_2011-10-31

/* The implementation of __parityhi2.

   Copyright (C) 2003, 2009  Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 3, or (at your option)

any later version.

GCC is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

Under Section 7 of GPL version 3, you are granted additional

permissions described in the GCC Runtime Library Exception, version

3.1, as published by the Free Software Foundation.

You should have received a copy of the GNU General Public License and

a copy of the GCC Runtime Library Exception along with this program;

see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see

<http://www.gnu.org/licenses/>.  */

int __parityhi2 (unsigned short x);

int

__parityhi2 (unsigned short x)

{

  int i;

  int count = 0;

  for (i = 0; i < 16; i++)

    if (x & ((unsigned short) 1 << i))

      count++;

  return count & 1;

}