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 Floating-Point Reliable) Library which itself is based on the 'GMP' (GNU Multiple Precision) Library.
Installation is non-trivial if you install from _source because of the
SystemRequirements (listed in ./DESCRIPTION):
MPFR, the "Multiple Precision Floating-Point Reliably" library
which is Free/Libre Software, available under the LGPL license. MPFR Website
GNU Multiple Precision arithmetic library (GMP)
Obtain that from GMP Website or from your operating system vendor / package system:
+ Under _Debian_, _Ubuntu_ (and other Debian derivative) Linux distributions,
it is sufficient (for *both* libraries) to simply do
sudo apt-get install libmpfr-dev+ In Fedora, Redhat, CentOS, opensuse, etc, you get these via
sudo dnf install mpfr-devel @article{FouLHLPZ-2007, author = {Laurent Fousse and Guillaume Hanrot and Vincent Lef\`{e}vre and Patrick P\'{e}lissier and Paul Zimmermann}, title = {MPFR: A multiple-precision binary floating-point library with correct rounding}, year = {2007}, journal = {ACM Trans. Math. Softw.}, volume = {33}, number = {2}, issn = {0098-3500}, pages = {13}, doi = {http://doi.acm.org/10.1145/1236463.1236468}, publisher = {ACM}, address = {New York, NY, USA},}