[Rd] Can crc32() assume to be available at the C level?

From: Dirk Eddelbuettel <edd_at_debian.org>
Date: Tue 01 Mar 2005 - 13:17:36 GMT

Dear R-develers,

Antoine Lucas suggested extending my small digest package (which provides md5 and sha-1 digests of R objects, which it are serialized if needed) with a crc32 function, and provided a fairly complete patch.

We are now wondering if we should play it safe and bundle crc32.c (plus utils) in the digest sources (as I do with md5 and sha1), or if we can assume that crc32 is present on all R platforms thanks to zlib.

Is that the case? If so, is it a good idea to use it even though it doesn't appear in the header files? Or should we package "our" copy?

Thanks in advance for any advice, Dirk

-- 
Better to have an approximate answer to the right question than a precise 
answer to the wrong question.  --  John Tukey as quoted by John Chambers

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Received on Wed Mar 02 00:26:03 2005

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