[Python] Elixir equivalent to while true

I want to rewrite this method (written here in Python) in Elixir

def something()
while True:
x = function()
y = function()
if x != y:
return x



function() generates a random value, so the execution would end sooner or later.

My problem is to translate the while True in the most "functional way" possible.

I came up with this solution, but I think is not very readable.


def something() do
internal(function(), function())
end

defp internal(a, a) do
internal(function(), function())
end

defp internal(a, _) do
a
end


Is there a better way to do it?

PS: function() must be always called twice at every cycle and it cannot be rewritten.

Thanks

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