Function InitCRC32

Libraries/unrar/crc.cpp:22–33

Build the classic CRC32 lookup table. We also provide this function to legacy RAR and ZIP decryption code.

// Build the classic CRC32 lookup table.
// We also provide this function to legacy RAR and ZIP decryption code.
void InitCRC32(uint *CRCTab)
{
  if (CRCTab[1]!=0)
    return;
  for (uint I=0;I<256;I++)
  {
    uint C=I;
    for (uint J=0;J<8;J++)
      C=(C & 1) ? (C>>1)^0xEDB88320 : (C>>1);
    CRCTab[I]=C;
  }
}


static void InitTables()