Constructor Detail

• BitUtils

  public BitUtils()

Method Detail

• reverseBitSignificance

  public static byte reverseBitSignificance(byte b)

  reverses the bits in a byte, i.e. 128 = 0b1000000 = bit list {0,0,0,0,0,0,0,1}, reversed yields 1 = 0b00000001 = bit list {1,0,0,0,0,0,0,0}

• reverseBitSignificanceInByte

  public static byte reverseBitSignificanceInByte(int b)

  as reverseBitSignificance(byte) but accepting int for convenience

• reverseBitSignificance

  public static byte[] reverseBitSignificance(byte... bytes)

  returns an array of bytes where the bits in each byte have been reversed; note however the order of the arguments is not reversed; useful e.g. in working with IP address CIDR's

• reverseBitSignificanceInBytes

  public static byte[] reverseBitSignificanceInBytes(int... bytes)

  as reverseBitSignificance(byte...), but taking ints for convenience (ignoring high bits)

• unsigned

  public static int unsigned(byte b)

  why oh why are bytes signed!

• unsignedByte

  public static int unsignedByte(int b)

  returns the value in 0..255 which is equivalent mod 256