37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
/* The implementation of __parityhi2.
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Copyright (C) 2003-2017 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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int __parityhi2 (unsigned short x);
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int
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__parityhi2 (unsigned short x)
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{
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int i;
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int count = 0;
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for (i = 0; i < 16; i++)
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if (x & ((unsigned short) 1 << i))
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count++;
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return count & 1;
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}
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