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  • $\begingroup$ No fair! Blasted v8 compile-to-C... $\endgroup$ Commented Jul 30, 2012 at 19:44
  • $\begingroup$ I get error messages for RandomReal input. Should timing include Compileoverhead as well? $\endgroup$ Commented Jul 31, 2012 at 6:47
  • 2
    $\begingroup$ @Yves he compiled for _Integer values; you'd need to compile a separate function for _Real values, then craft a function to select between them, as well as intelligently handle lists that are not packed and may contain mixed types. I don't think compilation overhead should be included in timings unless it uses pre-calculation. $\endgroup$ Commented Jul 31, 2012 at 11:03
  • $\begingroup$ @YvesKlett As Mr.W says it's compiled for Integers, and would need to be recompiled for reals. I don't know if timing should include compilation overhead; to be honest, I offer this is what I'd do if I needed it to be as fast as possible. It's clearly not leveraging Mathematica's strengths, nor is particularly pretty or clever. $\endgroup$ Commented Jul 31, 2012 at 13:25
  • $\begingroup$ How about a short-circuited version of the loop that keeps testing Compile`GetElement[l, i] until it fins something positive? (i.e., use Break[]) somewhere. $\endgroup$ Commented Apr 17, 2013 at 4:41