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I'm responding to the general lack of concern by the commenter above and most engineers I know. You and this other guy commenting are missing the point, I'm not talking specifically about this algorithm, but about engineers in general who don't care about wasted cycles.

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Yes but that's the entire point of these comments, wasting cycles is a great optimization but unless the goal is purely intellectual exercise, you lose more time with expensive trig functions. The real world favors the naive approach, in this context + case.

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