[lostmsu]

I love the explanation, but why did the guy suggest a complicated bit work instead of just doing sum += arr[i] > 128 ? arr[i] : 0 is beyond me.

[ncmncm]

That would not evoke the behavior he wanted to call attention to.

[rabryan35]

Theres still a conditional branch in that statement

[lostmsu]

That depends on the compiler, and I'd expect most to optimize this into a cmov