Two questions:

  1. Why test the bit and then set it?

    If you are only going to set the bit if it is unset, then just setting it achieves the same thing.

  2. Why would calling a function to set a bit be quicker than setting the bit directly?

    I guess the compiler might inline the function and optimise away the overheads, but still I don't see why it would end up being any quicker. As quick possibly.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^8: Bit vector fiddling with Inline C by BrowserUk
in thread Bit vector fiddling with Inline C by oxone

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