[Rd] Performance of .C and .Call functions vs. native R code

Alireza Mahani alireza.s.mahani at gmail.com
Thu Jul 14 18:18:22 CEST 2011

You are absolutely right Gabe! I removed the line 'dim(A) <- dim(A)[1] *
dim(A)[2]' and my code still executes properly. As you said, matrices are
internally stored as one-dimensional arrays (column-major by default), it's
just that R exposes them differently by assigning different attributes to
them, but as far as C/C++ code is concerned there is no distinction.

Many thanks,

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