[R] How to look within .Internal ?

[megh]

https://svn.r-project.org/R/trunk/src/main is not opening for last few days.
Is there any problem with this or the materials were moved to different
address?


Duncan Murdoch-2 wrote:
> 
> On 11/19/2008 10:13 AM, megh wrote:
>> In the optim() function there is a syntax :
>> 
>> res <- .Internal(optim(par, fn1, gr1, method, con, lower, 
>> 
>> Here how can I see the inside-codes of ".Internal" function ?
> 
> 
> You need the R source code.  Then find src/main/names.c, and look up 
> "optim".  It will tell you the C name of the function being called.
> 
> In this case, for the R-devel version, you'll find this on names.c line
> 853:
> 
> {"optim",	do_optim,	0,	11,	7,	{PP_FUNCALL, PREC_FN,	0}},
> 
> So you need to find the do_optim function.  It's in src/main/optim.c.
> 
> You can browse these source files on
> 
> https://svn.r-project.org/R/trunk/src/main
> 
> Duncan Murdoch
> 
> ______________________________________________
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> PLEASE do read the posting guide
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> and provide commented, minimal, self-contained, reproducible code.
> 
> 

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