blob: ba9ddb7e0803f70025db8292faefdbd6b51ab2e5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
// BZip2CRC.cpp
#include "StdAfx.h"
#include "BZip2CRC.h"
UInt32 CBZip2CRC::Table[256];
static const UInt32 kBZip2CRCPoly = 0x04c11db7; /* AUTODIN II, Ethernet, & FDDI */
void CBZip2CRC::InitTable()
{
for (UInt32 i = 0; i < 256; i++)
{
UInt32 r = (i << 24);
for (int j = 8; j > 0; j--)
r = (r & 0x80000000) ? ((r << 1) ^ kBZip2CRCPoly) : (r << 1);
Table[i] = r;
}
}
class CBZip2CRCTableInit
{
public:
CBZip2CRCTableInit() { CBZip2CRC::InitTable(); }
} g_BZip2CRCTableInit;
|