C++ 20: std::bit_width()
std::cout << std::bit_width(10u); // prints 4 as of 00001010bNote that it accepts only unsigned types.Deduct 1 to get the zero based position to answer your question.
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Answer by Evgeny Yashin for What is the fastest/most efficient way to find the position of the highest set bit (msb) in an integer in C?
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