/**
   * Split a freeform string into a host and port, without strict validation.
   *
   * <p>Note that the host-only formats will leave the port field undefined. You can use {@link
   * #withDefaultPort(int)} to patch in a default value.
   *
   * @param hostPortString the input string to parse.
   * @return if parsing was successful, a populated HostAndPort object.

    return longBitsToDouble(significand | ONE_BITS);
  }

  static double bigToDouble(BigInteger x) {
    // This is an extremely fast implementation of BigInteger.doubleValue(). JDK patch pending.
    BigInteger absX = x.abs();
    int exponent = absX.bitLength() - 1;
    // exponent == floor(log2(abs(x)))
    if (exponent < Long.SIZE - 1) {
      return x.longValue();