Method decrement

output/java_guava/1.4.19/InetAddresses.java:963–973

Returns a new InetAddress that is one less than the passed in address. This method works for both IPv4 and IPv6 addresses. @param address the InetAddress to decrement @return a new InetAddress that is one less than the passed in address @throws IllegalArgumentException if InetAddress is at the begi

(InetAddress address)

  public static InetAddress decrement(InetAddress address) {
    byte[] addr = address.getAddress();
    int i = addr.length - 1;
    while (i >= 0 && addr[i] == (byte) 0x00) {
      addr[i] = (byte) 0xff;
      i--;
    }
    Preconditions.checkArgument(i >= 0, "Decrementing %s would wrap.", address);
    addr[i]--;
    return bytesToInetAddress(addr);
  }

  /**
   * Returns a new InetAddress that is one more than the passed in address. This method works for