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Power of 2

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Hello all! I'd like to ask what is most effective way to check if the given number is power of 2? Thx

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Quote:
Original post by deks
bool bIsPowerOfTwo = !(n&(n-1));

=[dEkS]=


slight mod:


bool is_pow_of2 = (n != 0 && !(n & (n - 1)));

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Quote:
Original post by snk_kid
slight mod:

bool is_pow_of2 = (n != 0 && !(n & (n - 1)));

Good catch! :)

=[dEkS]=

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