zlacker

I don't think it's fair to say this it emits the same code. The code on the right is definitely implementing the same algorithm and is generally similar to the code on the left, but it's not identical. IANAL, but I think copyright wouldn't apply in this case.

Imagine a person who would want to implement the same function in their project. They could look at the open source implementation to learn how the algorithm is supposed to work, and would write their implementation. They could end up with the implementation on the right.