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Message: [QUOTE="Seebs, post: 4214671"] While this is true, I've seen some cleverness. One of the geo random number generators replaced: if (x) { y += z; } with y += (z * x); (where x was necessarily 0 or 1) and got a VERY noticeable performance improvement. That is generally the path to take for stuff like this, if your compiler isn't clever enough to do what you mean. (In particular, a compiler which produces multiple branches in the absence of side effects is not thinking as clearly as it should, on a system where branches are expensive.) -s [/QUOTE]