Probably not helpful for your particular problem, but the package rcdd also has a fairly limited interface to the GNU MP Bignum library. It does arithmetic on arbitrary precision rationals. Also exact linear programming and computational geometry using arbitrary precision rationals.
library(rcdd) ?ArithmeticGMP -- Charles Geyer Professor, School of Statistics University of Minnesota [EMAIL PROTECTED] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.