mp-units/docs/reference/systems_reference/systems/core.md

Core System

Namespace: mp_units

Module: mp_units.core

Header: <mp-units/core.h>

Dimensions

Name	Symbol
dimension_one	1

Quantities

Quantity	Character	Dimension	is_kind	Kind of	Parent	Equation	Hierarchy
dimensionless	Real	1	✓	dimensionless	—	—	view

Units

Unit Name	Symbol	unit_symbol	Definition
one	1	—	—
parts_per_million	ppm	—	mag_ratio<1, 1'000'000> * one
per_mille	‰ (%o)	—	mag_ratio<1, 1000> * one
percent	%	—	mag_ratio<1, 100> * one
pi	π (pi)	—	mag<pi_c> * one
ppm	—	—	alias to mp_units::parts_per_million
π	—	—	alias to mp_units::pi