Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is an older version of Boost and was released in 2013. The current version is 1.89.0.

Global centimeter

boost::units::cgs::centimeter

Synopsis

// In header: <boost/units/systems/cgs/length.hpp>

static const length centimeter;