coco
37 lines
814 B
C++
37 lines
814 B
C++
// Crc32.h: interface for the Crc32 class.
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//
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//////////////////////////////////////////////////////////////////////
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#if !defined(AFX_CRC32_H__B1BA997F_CAA4_4FC6_B899_EF9C3CCC286B__INCLUDED_)
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#define AFX_CRC32_H__B1BA997F_CAA4_4FC6_B899_EF9C3CCC286B__INCLUDED_
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#if _MSC_VER > 1000
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#pragma once
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#endif // _MSC_VER > 1000
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class Crc32
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{
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private :
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static unsigned long table[ 256 ];
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static int initialized;
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unsigned long crc;
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public :
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Crc32( unsigned long init_value );
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void update( int c );
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unsigned long value( void )
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{
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return crc;
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}
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// public:
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// Crc32();
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// virtual ~Crc32();
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};
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inline void Crc32::update( int c )
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{
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crc = table[ ( (int) crc ^ ( c & 0xff ) ) & 0xff ] ^
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( ( crc >> 8 ) & 0x00FFFFFFL );
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}
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#endif // !defined(AFX_CRC32_H__B1BA997F_CAA4_4FC6_B899_EF9C3CCC286B__INCLUDED_)
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