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Arithmetic (via S4 classes and methods) for arbitrary precision floating point numbers, including transcendental ("special") functions. To this end, the package interfaces to the 'LGPL' licensed 'MPFR' (Multiple Precision FloatingPoint Reliable) Library which itself is based on the 'GMP' (GNU Multiple Precision) Library.
Package details 


Author  Martin Maechler [aut, cre] (<https://orcid.org/0000000286859910>), Richard M. Heiberger [ctb] (formatHex(), *Bin, *Dec), John C. Nash [ctb] (hjkMpfr(), origin of unirootR()) 
Maintainer  Martin Maechler <maechler@stat.math.ethz.ch> 
License  GPL (>= 2) 
Version  0.82 
URL  https://rmpfr.rforge.rproject.org/ 
Package repository  View on RForge 
Installation 
Install the latest version of this package by entering the following in R:

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