this post was submitted on 22 Oct 2023
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GNU C. Also works with Clang. Avoids evaluating the arguments multiple times. The optimizer will convert the branch into a conditional move, if it doesn't I'd replace the ternary with the "bit hacker 2" version.
__auto_typeis a compiler builtin, not a library function. It's not a function at all, the parentheses are for precedence & grouping.