Reading an "unsigned long long" using R readBin()

Well, R has no unsigned quantities, so ultimately you can't actually do 
this.  But using what="int" and an appropriate 'size' (likely to be 8)
shold read the numbers, wrapping around very large ones to be negative.
(The usual trick of storing integers in numeric will lose accuracy, but 
might be better than nothing.)

Sorry for the simple question, but I am trying to read an "unsigned
long long" using the R readBin() function.  Can someone point me in
the right direction, or am I better off using C for such things?  The
file that I am reading will have been produced on the same machine
that is doing the reading.

Thanks,
Sean

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Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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