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25 lines
642 B
C
25 lines
642 B
C
// simple_checksum.h
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// Functions to compute a simple checksum value for a file
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// Author: Michael S. Booth, Turtle Rock Studios (www.turtlerockstudios.com), September 2003
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#ifndef _SIMPLE_CHECKSUM_H_
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#define _SIMPLE_CHECKSUM_H_
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/**
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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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*/
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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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