On Mon, 31 Mar 2008, Simon Anders wrote:
> Dear Prof Ripley,
>
> Prof Brian Ripley wrote:
>> But it is not taken 'verbatim from src/main/print.c' (at least not in that
>> version of R), and the code is not run with USE_RINTERNALS defined when
>> write-barrier checking is enabled.
>>
>> The example has been updated to match the current code in 2.7.0 alpha.
>
> I just assumed that it is copied verbatim without checking because it says so
> in the sentence above the code ("As a more comprehensive example of
> constructing an R call in C code and evaluating, consider the following
> fragment of printAttributes in src/main/print.c.")
That was true once, long ago.
> I don't understand, however, what you mean by stating that USE_RINTERNALS is
> not needed (and I have to admit that I have no knowledge of this
> 'write-barrier checking' mechanism.)
I didn't say 'USE_RINTERNALS is not needed' for your code: I said it was
not used for the code that was run.
...
--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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