> Yes, there is a non-trivial area where it's *possible* to do something > really clever and fast in C/Fortran but so annoying that no one ever > actually does it. Having macros and jit can make these things convenient, > thereby making it possible for mere mortals to benefit from these kinds of > tricks.
Steven Johnson's recent implementation of Knuth's complex Horner rule macro (@chorner) is a great recent example, resulting in a 4x speedup in the digamma function. https://github.com/JuliaLang/julia/issues/7033
