[R] Multiprecision arithmetics?

[Prof Brian Ripley]

On Sat, 19 Feb 2005, Spencer Graves wrote:

> Dear Prof. Ripley: 
>     I just got a negative result from 'install.packages("gmp")': 
> trying URL `http://cran.r-project.org/bin/windows/contrib/2.0/PACKAGES'
> Content type `text/plain; charset=iso-8859-1' length 25432 bytes
> opened URL
> downloaded 24Kb
>
> Warning message:
> No package "gmp" on CRAN. in: download.packages(pkgs, destdir = tmpd, 
> available = available, 
>     This was from R 2.0.1 under Windows 2000. 
>     I see "gmp" listed among contributed packages on CRAN, but the above 
> command didn't get it for me.

That's because you did not look in the ReadMe!  Really, you should know to 
do so by now: about 40 packages do not have Windows versions on CRAN and 
it all cases there is an explanation.

My ISP has lost the r-project.org domain in the last hour, so I can't 
actually check, but I think it is the same as

http://www.sourcekeg.co.uk/cran/bin/windows/contrib/2.0/@ReadMe

which says:

The packages
   fork, gmp, gtkDevice, hdf5, ncdf, nice, RArcInfo, RCurl, RNetCDF,
   rpart.permutation, rpvm, RQuantLib, RScaLAPACK, rsprng, snowFT,
   taskPR, and udunits
require additional libraries / software to build on Windows I do not
have installed.

The packages
   gmp, gsl, hdf5, ncdf, rgdal, RNetCDF, udunits, xgobi and XML
do not build out of the box. Nevertheless these are available at
   http://www.stats.ox.ac.uk/pub/RWin/2.0.0/
kindly provided by Professor Brian D. Ripley.

In R-devel (2.1.0-to-be) they will magically appear on the list if the 
repositories are the default list.



>     Thanks,
>     spencer graves
>
> Prof Brian Ripley wrote:
>
>> See the gmp package on CRAN.
>> 
>> On Sat, 19 Feb 2005, Alexander Klimov wrote:
>> 
>>> Is there a support of multiprecision arithmetics (e.g., interface to
>>> gmp)?
>> 
>> 
>
>

-- 
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)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595