- apply_mask _ Maskbits.None _ = Octet.None
- apply_mask Octet.None _ _ = Octet.None
- apply_mask oct mask bit
- | mask == Eight = oct
- | mask == Seven = oct { b8 = bit }
- | mask == Six = oct { b8 = bit, b7 = bit }
- | mask == Five = oct { b8 = bit, b7 = bit, b6 = bit }
- | mask == Four = oct { b8 = bit, b7 = bit, b6 = bit, b5 = bit }
- | mask == Three = oct { b8 = bit, b7 = bit, b6 = bit, b5 = bit, b4 = bit }
- | mask == Two = oct { b8 = bit, b7 = bit, b6 = bit, b5 = bit, b4 = bit, b3 = bit }
- | mask == Maskbits.One = oct { b8 = bit, b7 = bit, b6 = bit, b5 = bit, b4 = bit, b3 = bit, b2 = bit }
- | mask == Maskbits.Zero = oct { b8 = bit, b7 = bit, b6 = bit, b5 = bit, b4 = bit, b3 = bit, b2 = bit, b1 = bit }
- | otherwise = Octet.None
-
-
--- Convert each bit to its integer value, and multiply by the
--- appropriate power of two. Sum them up, and we should get an integer
--- between 0 and 255.
-octet_to_int :: Octet -> Int
-octet_to_int x =
- 128 * (bit_to_int (b1 x)) +
- 64 * (bit_to_int (b2 x)) +
- 32 * (bit_to_int (b3 x)) +
- 16 * (bit_to_int (b4 x)) +
- 8 * (bit_to_int (b5 x)) +
- 4 * (bit_to_int (b6 x)) +
- 2 * (bit_to_int (b7 x)) +
- 1 * (bit_to_int (b8 x))