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Thread: Counting flags in a bit mask

  1. #1
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    Default Counting flags in a bit mask

    Hi,

    I am using a enum as a bit mask. I also use Q_DECLARE_FLAGS. Now I have the need to know how many flags are set, but I can't find a simple solution for that: will say no build in function. For now I use a simple loop which counts the flags. Just wondering if there is a "standard"/better way without a self defined function...


    Thanks

    QFlags::cont() would have been nice

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    Default Re: Counting flags in a bit mask

    Flags don't have to be exclusive, so any count() wouldn't work.

    Here you go for some algorithms: http://graphics.stanford.edu/~seande...ntBitsSetNaive
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