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51 lines
1.8 KiB
51 lines
1.8 KiB
8 years ago
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/*
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* In addition, as a special exception, the author gives permission to
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* link the code of this program with the Half-Life Game Engine ("HL
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* Engine") and Modified Game Libraries ("MODs") developed by Valve,
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* L.L.C ("Valve"). You must obey the GNU General Public License in all
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* respects for all of the code used other than the HL Engine and MODs
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* from Valve. If you modify this file, you may extend this exception
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* to your version of the file, but you are not obligated to do so. If
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* you do not wish to do so, delete this exception statement from your
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* version.
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*
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*/
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#ifndef SIMPLE_CHECKSUM_H
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#define SIMPLE_CHECKSUM_H
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#ifdef _WIN32
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#pragma once
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#endif
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// Compute a simple checksum for the given data.
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// Each byte in the data is multiplied by its position to track re-ordering changes
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/* <4a799e> ../game_shared/simple_checksum.h:12 */
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inline unsigned int ComputeSimpleChecksum(const unsigned char *dataPointer, int dataLength)
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{
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unsigned int checksum = 0;
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for (int i = 1; i <= dataLength; i++)
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{
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checksum += (*dataPointer) * i;
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++dataPointer;
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}
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return checksum;
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}
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#endif // SIMPLE_CHECKSUM_H
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