Specs

flip(prefix(), integer()) :: prefix()

Flips a single bit at position in given pfx.

A negative position is relative to the end of the pfx.bits bitstring. It is an error to point to a bit outside the range of available bits.

Examples

iex> flip("255.255.254.0", 23)
"255.255.255.0"

iex> flip("255.255.255.0", -9)
"255.255.254.0"

# flip the 7th bit
iex> flip("0088.8888.8888", 6)
"02-88-88-88-88-88"

iex> flip({1, 2, 3, 0}, 24)
{1, 2, 3, 128}

# flip last bit
iex> flip({{1, 2, 3, 128}, 25}, 24)
{{1, 2, 3, 0}, 25}

iex> flip({{1, 2, 3, 128}, 25}, -1)
{{1, 2, 3, 0}, 25}

iex> flip(%Pfx{bits: <<1, 2, 3, 1::1>>, maxlen: 32}, -1)
%Pfx{bits: <<1, 2, 3, 0::1>>, maxlen: 32}