contract BytesEquality =

  function eq16(a : bytes(16), b) = a == b
  function ne16(a : bytes(16), b) = a != b

  function eq32(a : bytes(32), b) = a == b
  function ne32(a : bytes(32), b) = a != b

  function eq47(a : bytes(47), b) = a == b
  function ne47(a : bytes(47), b) = a != b

  function eq64(a : bytes(64), b) = a == b
  function ne64(a : bytes(64), b) = a != b

  function eq65(a : bytes(65), b) = a == b
  function ne65(a : bytes(65), b) = a != b