...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::units::angle::radian_base_unit
// In header: <boost/units/base_units/angle/radian.hpp> struct radian_base_unit : public base_unit< radian_base_unit, plane_angle_dimension,-2 > { // public static functions static std::string name(); static std::string symbol(); };