JuliaLang/julia — pull request #9144 by rfourquet (2014-11-25 09:00:21+00:00)
Title: faster randmtzig_exprnd (separate unlikely branch + inline) and rename it "randexp"

Same transformation as was done recently on `randn`.
The rename was suggested by @ViralBShah. It turns out that this function is not exported by Base (nor documented it seems), should it be? If yes, I will write the array version `randexp!` too.