Renjin incorporated into R?

General
10

Actually, Renjin can be used from GNU R as a package:
http://docs.renjin.org/en/latest/package/index.html

One of the driving ideas behind Renjin is that you should be able to write code in R that is just as fast (or faster) as Fortran/C++. That being said, there's still a lot of work to do on our compiler and the analysis required for efficient compilation, but the following example demonstrates the potential:

library(renjin)

bigsum <- function(n) {
  sum <- 0
  for(i in seq(from = 1, to = n)) {
    sum <- sum + i
  }
  sum
}
bigsumc <- compiler::cmpfun(bigsum) # GNU R's byte code compiler

system.time(bigsum(1e8))
system.time(bigsumc(1e8))
system.time(renjin(bigsum(1e8)))
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