Provides arithmetic functions for R matrix and 'big.matrix' objects as well as functions for QR factorization, Cholesky factorization, General eigenvalue, and Singular value decomposition (SVD). A method matrix multiplication and an arithmetic method -for matrix addition, matrix difference- allows for mixed type operation -a matrix class object and a big.matrix class object- and pure type operation for two big.matrix class objects.

Extend the 'bigmemory' package with various analytics.
    Functions 'bigkmeans' and 'binit' may also be used with native R objects.
    For 'tapply'-like functions, the bigtabulate package may also be helpful.
    For linear algebra support, see 'bigalgebra'.  For mutex (locking) support
    for advanced shared-memory usage, see 'synchronicity'.

Enhanced message functions (cat() / message() / warning() / error()) 
    using wrappers around sprintf(). Also, multiple assertion functions 
    (e.g. to check class, length, values, files, arguments, etc.).

A set of Boolean operators which accept integers of any size, in any base from 2 to 36, including 2's complement format, and perform actions like "AND," "OR", "NOT", "SHIFTR/L" etc. The output can be in any base specified. A direct base to base converter is included.

Provides functions for reading *.PGN files with more than one game, including large files without copying it into RAM (using 'ff' package or 'RSQLite' package). Handle chess data and chess aggregated data, count figure moves statistics, create player profile, plot winning chances, browse openings. Set of functions of R API to communicate with UCI-protocol based chess engines.

Format dates and times flexibly and to whichever locales
    make sense. Parses dates, times, and date-times in various formats
    (including string-based ISO 8601 constructions). The formatting syntax gives
    the user many options for formatting the date and time output in a precise
    manner. Time zones in the input can be expressed in multiple ways and there
    are many options for formatting time zones in the output as well. Several of
    the provided helper functions allow for automatic generation of locale-aware
    formatting patterns based on date/time skeleton formats and standardized
    date/time formats with varying specificity.