First, find the n nth roots of unity. eg if n = 6, find the n distinct (complex) numbers such that n^6 = 1.

https://en.wikipedia.org/wiki/Root_of_unity

Second, raise each root to the power pi (.^pi).

Third, sum the resulting numbers and use that as the output.

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George Berken Boldizsar Mehdi Dehghan Hong Son

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