[R] Parsing R matrix to C

[daniel.ielpo@uniriotec.br]

I'm developing a C dll to use as a package in R. I need to parse a R Matrix as 
a parameter to a function in a dll. I´d like to know how can I use the Sexp 
type and how to handle this as a matrix in the C code.

Sorry for the bad english.

Thanks,

Daniel Ielpo

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