BitwiseIp.Mask.decode
You're seeing just the function
decode
, go back to BitwiseIp.Mask module for more information.
Specs
Decodes a bitmask into an integer prefix length.
Given the protocol (either :v4
or :v6
) and a valid bitmask for that
protocol, this function looks up the number of leading ones used by the
bitmask. The function is only defined on valid IPv4 and IPv6 bitmasks. To
undo this conversion, use encode/2
.
Examples
iex> BitwiseIp.Mask.decode(:v4, 0b11111111111100000000000000000000)
12
iex> BitwiseIp.Mask.decode(:v6, 0b11111111111100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000)
12
iex> BitwiseIp.Mask.decode(:v4, 0b11111111111100000000000000000001)
** (FunctionClauseError) no function clause matching in BitwiseIp.Mask.decode/2
iex> BitwiseIp.Mask.decode(:v6, 0b0101)
** (FunctionClauseError) no function clause matching in BitwiseIp.Mask.decode/2