Thanks Tomas, What I really meant was relative performance of f1 vs f2 vs f3 on Julia v0.4.
My tests on V0.3.4, showed f3 much faster (x6) than f2 which in turn is much (x4) faster than f1. My point being, if understand your timings correctly, f3 should be faster than f2 on Julia v0.4 - Greg
