5 #define kCrcPoly 0xEDB88320
6 UInt32 g_CrcTable[256];
8 void MY_FAST_CALL CrcGenerateTable(void)
11 for (i = 0; i < 256; i++)
15 for (j = 0; j < 8; j++)
16 r = (r >> 1) ^ (kCrcPoly & ~((r & 1) - 1));
21 UInt32 MY_FAST_CALL CrcUpdate(UInt32 v, const void *data, size_t size)
23 const Byte *p = (const Byte *)data;
24 for (; size > 0 ; size--, p++)
25 v = CRC_UPDATE_BYTE(v, *p);
29 UInt32 MY_FAST_CALL CrcCalc(const void *data, size_t size)
31 return CrcUpdate(CRC_INIT_VAL, data, size) ^ 0xFFFFFFFF;