Part of the Boost C++ Libraries collection. . This library is divided into three interconnected parts: * Statistical Distributions: Provides a reasonably comprehensive set of statistical distributions, upon which higher level statistical tests can be built. * Mathematical Special Functions: Provides a small number of high quality special functions, initially these were concentrated on functions used in statistical applications along with those in the Technical Report on C++ Library Extensions. * Implementation Toolkit: Provides many of the tools required to implement mathematical special functions.