[R] Looking for .Call functions

[Liaw, Andy]

You need to download the source for R.  C source is not included with binary
distributions.

Andy

> From: Nathaniel B. Derby
> 
> Hello,
> 
> Thanks for the help.  Unfortunately, my version of R (1.9.1) 
> doesn't have that directory (i.e., within $RSRC\src\library, 
> there is just a subdirectory entitled "windlgs"), and has 
> neither ts.h nor pacf.c in any of its directories.  Could it 
> be that this function is embedded inside a .dll file (like stats.dll)?
> 
> 
> thanks,
> 
> Nate
> 
> 
> > It means that in one of the .c source files in 
> $RSRC/src/library/stats/src 
> > there will be a C function declared as
> >
> > SEXP arma0fa(SEXP, SEXP);
> >
> > (In fact it is declared in ts.h and defined in pacf.c in 
> that directory)
> 
> 
> > Nathaniel B. Derby wrote:
> >> Hi,
> >> 
> >> In my ongoing quest to track down the source of an error 
> (see message "[R] 
> >> optim error in arima" above), I find in the cource code 
> for arima0 the 
> >> following:
> >> 
> >>     arma0f <- function(p) {
> >>         par <- as.double(fixed)
> >>         par[mask] <- p
> >>         .Call("arma0fa", G, par, PACKAGE = "stats")
> >>     }
> >> 
> >> I would like to know what the function "arma0f" does.  
> Does the above mean 
> >> that there is a function called "arma0fa" somewhere in R?  
> Where is it?  I 
> >> couldn't find anything in Rinternals.h.
> 
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