si::base_unit

Description

The SI base units are represented in PQS as a subset of normative units, ¹ where each SI base unit is associated with a base quantity. The base unit ties the quantity to some physical measurement of the base quantity giving meaning to the numeric value expressed in the base unit as representing a defined measure of the quantity.

Signature

si::base_unit<base_quantityQb>

Header

#include <pqs/systems/si/unit.hpp>

Notation

typename	model of	notes
Qb	base_quantity

typename	type	notes
Ub	si::base_unit< Qb >

Provides

concept	result
unit< Ub >	true

inline constant	result
si::is_normative_unit< Ub >	true
si::is_prefixable< Ub >	false. By nature base units don't have prefixes (the kg is a special case)
get_measurement_system< Ub >	si_measurement_system

• [1] A base_unit is a normative_unit and has a conversion factor of 1.