[R] Arguments of R- and C-side of internal functions

[Peter Dalgaard BSA]

Timur Elzhov <Timur.Elzhov at jinr.ru> writes:

> Second, who pass the other, `call', `op' and `rho' parameters
>   to `do_optim() ?'

You mean "why" I suppose.

op: Some functions are mapped into the same C function (do_math2, for
example) so you need to know which one.

call: The whole call is passed mainly for the benefit of error
printouts. It is not always possible to reconstruct it from the other
arguments, since "op" may be computed as in get("+")(2,2).

rho: this is the evaluation environment, and it is crucial for
variable lookup etc.

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
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