nextPowerOfTwo <<= 1;
        bits++;
      }
      // Get rid of the 2s in num.
      int tz = Long.numberOfTrailingZeros(num);
      long normalizedNum = num >> tz;
      shift += tz;
      // Adjust floor(log2(num)) + 1.
      int normalizedBits = bits - tz;
      // If it won't fit in a long, then we store off the intermediate product.
      if (normalizedBits + productBits >= Long.SIZE) {

        self.last_request_start_time: datetime = datetime.fromtimestamp(0, timezone.utc)
        self.speed_multiplier: float = 1.0

    def __enter__(self) -> "RateLimiter":
        now = datetime.now(tz=timezone.utc)

        # Handle primary rate limits
        primary_limit_wait_time = 0.0
        if self.remaining_points <= self.last_query_cost:
            primary_limit_wait_time = (self.reset_at - now).total_seconds() + 2

    /** SMB header length */
    int HEADER_LENGTH = 32;

    /** Milliseconds between 1970 and 1601 */
    long MILLISECONDS_BETWEEN_1970_AND_1601 = 11644473600000L;
    /** Default timezone */
    TimeZone TZ = TimeZone.getDefault();

    /** Whether to use batching */
    boolean USE_BATCHING = Config.getBoolean("jcifs.smb1.smb.client.useBatching", true);
    /** OEM encoding */

        if (t == 0L || t == 0xFFFFFFFFFFFFFFFFL) {
            writeInt4(0xFFFFFFFF, dst, dstIndex);
            return;
        }
        synchronized (TZ) {
            if (TZ.inDaylightTime(new Date())) {
                // in DST
                if (TZ.inDaylightTime(new Date(t))) {
                    // t also in DST so no correction
                } else {
                    // t not in DST so subtract 1 hour