I understand the original implementation of Random Forest was done in
Fortran code. In the source files of the R implementation there is a note
"C wrapper for random forests:  get input from R and drive  the Fortran
routines.". I'm far from an expert on this...does that mean that the
implementation in R is through calls to C functions only (not Fortran)?

So, would knowing C be enough to understand this code, or Fortran is also
necessary?

Thanks for your help

Axel.

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