a

2026-07-03 16:05:30 +08:00
commit df489d5640
1101 changed files with 779140 additions and 0 deletions
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+// Crc32.h: interface for the Crc32 class.
+//
+//////////////////////////////////////////////////////////////////////
+
+#if !defined(AFX_CRC32_H__B1BA997F_CAA4_4FC6_B899_EF9C3CCC286B__INCLUDED_)
+#define AFX_CRC32_H__B1BA997F_CAA4_4FC6_B899_EF9C3CCC286B__INCLUDED_
+
+#if _MSC_VER > 1000
+#pragma once
+#endif // _MSC_VER > 1000
+
+class Crc32  
+{
+private :
+	static unsigned long table[ 256 ];
+	static int initialized;
+	unsigned long crc;
+public :
+	Crc32( unsigned long init_value );
+	void update( int c );
+    unsigned long value( void )
+	{ 
+		return crc; 
+	}
+// public:
+// 	Crc32();
+// 	virtual ~Crc32();
+};
+
+inline void Crc32::update( int c )
+{
+    crc = table[ ( (int) crc ^ ( c & 0xff ) ) & 0xff ] ^
+		( ( crc >> 8 ) & 0x00FFFFFFL );
+}
+
+#endif // !defined(AFX_CRC32_H__B1BA997F_CAA4_4FC6_B899_EF9C3CCC286B__INCLUDED_)