units_traits(3)
| units::traits(3) | Unit Conversion and Dimensional Analysis Library | units::traits(3) |
NAME
units::traits - namespace representing type traits which can access the properties of types provided by the units library.
SYNOPSIS
Namespaces
namespace detail
@cond
Classes
struct is_ratio
Trait that tests whether a type represents a std::ratio. struct
is_base_unit
Trait which tests if a class is a base_unit type. struct
is_unit
Traits which tests if a class is a unit. struct
is_convertible_unit
Trait which checks whether two units can be converted to each other. struct
is_nonlinear_scale
Trait which tests that class T meets the requirements for a non-linear scale.
struct is_convertible_unit_t
Trait which tests whether two container types derived from unit_t
are convertible to each other. struct is_dimensionless_unit
struct is_unit_t
Traits which tests if a class is a unit. struct
has_linear_scale
Trait which tests whether a type is inherited from a linear scale. struct
has_decibel_scale
Trait which tests whether a type is inherited from a decibel scale. struct
is_same_scale
Trait which tests whether two types has the same non-linear scale. struct
is_scalar_unit
struct is_unit_value_t
Trait which tests whether a type is a unit_value_t representing the
given unit type. struct is_unit_value_t_category
Trait which tests whether type T is a unit_value_t with a unit type in
the given category. struct is_length_unit
struct is_mass_unit
struct is_time_unit
struct is_angle_unit
struct is_current_unit
struct is_temperature_unit
struct is_substance_unit
struct is_luminous_intensity_unit
struct is_solid_angle_unit
struct is_frequency_unit
struct is_velocity_unit
struct is_angular_velocity_unit
struct is_acceleration_unit
struct is_jerk_unit
struct is_force_unit
struct is_pressure_unit
struct is_charge_unit
struct is_energy_unit
struct is_power_unit
struct is_voltage_unit
struct is_capacitance_unit
struct is_impedance_unit
struct is_conductance_unit
struct is_magnetic_flux_unit
struct is_magnetic_field_strength_unit
struct is_inductance_unit
struct is_luminous_flux_unit
struct is_illuminance_unit
struct is_radioactivity_unit
struct is_torque_unit
struct is_area_unit
struct is_volume_unit
struct is_density_unit
struct is_concentration_unit
struct is_data_unit
struct is_data_transfer_rate_unit
Typedefs
template<class U> using base_unit_of = typename
units::detail::base_unit_of_impl<U>::type
Trait which returns the base_unit type that a unit is originally
derived from.
Detailed Description
namespace representing type traits which can access the properties of types provided by the units library.
Trait which tests whether a type represents a unit of data_transfer_rate.
Trait which tests whether a type represents a unit of data.
Trait which tests whether a type represents a unit of concentration.
Trait which tests whether a type represents a unit of density.
Trait which tests whether a type represents a unit of volume.
Trait which tests whether a type represents a unit of area.
Trait which tests whether a type represents a unit of torque.
Trait which tests whether a type represents a unit of radioactivity.
Trait which tests whether a type represents a unit of illuminance.
Trait which tests whether a type represents a unit of luminous_flux.
Trait which tests whether a type represents a unit of inductance.
Trait which tests whether a type represents a unit of magnetic_field_strength.
Trait which tests whether a type represents a unit of magnetic_flux.
Trait which tests whether a type represents a unit of conductance.
Trait which tests whether a type represents a unit of impedance.
Trait which tests whether a type represents a unit of capacitance.
Trait which tests whether a type represents a unit of voltage.
Trait which tests whether a type represents a unit of power.
Trait which tests whether a type represents a unit of energy.
Trait which tests whether a type represents a unit of charge.
Trait which tests whether a type represents a unit of pressure.
Trait which tests whether a type represents a unit of force.
Trait which tests whether a type represents a unit of jerk.
Trait which tests whether a type represents a unit of acceleration.
Trait which tests whether a type represents a unit of angular_velocity.
Trait which tests whether a type represents a unit of velocity.
Trait which tests whether a type represents a unit of frequency.
Trait which tests whether a type represents a unit of solid_angle.
Trait which tests whether a type represents a unit of luminous_intensity.
Trait which tests whether a type represents a unit of substance.
Trait which tests whether a type represents a unit of temperature.
Trait which tests whether a type represents a unit of current.
Trait which tests whether a type represents a unit of angle.
Trait which tests whether a type represents a unit of time.
Trait which tests whether a type represents a unit of mass.
Trait which tests whether a type represents a unit of length.
Trait which tests whether a type represents a unit of dimensionless.
Trait which tests whether a type represents a unit of scalar.
Inherits from std::true_type or std::false_type. Use is_scalar_unit<T>::value to test the unit represents a scalar quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_dimensionless_unit<T>::value to test the unit represents a dimensionless quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_length_unit<T>::value to test the unit represents a length quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_mass_unit<T>::value to test the unit represents a mass quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_time_unit<T>::value to test the unit represents a time quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_angle_unit<T>::value to test the unit represents a angle quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_current_unit<T>::value to test the unit represents a current quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_temperature_unit<T>::value to test the unit represents a temperature quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_substance_unit<T>::value to test the unit represents a substance quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_luminous_intensity_unit<T>::value to test the unit represents a luminous_intensity quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_solid_angle_unit<T>::value to test the unit represents a solid_angle quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_frequency_unit<T>::value to test the unit represents a frequency quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_velocity_unit<T>::value to test the unit represents a velocity quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_angular_velocity_unit<T>::value to test the unit represents a angular_velocity quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_acceleration_unit<T>::value to test the unit represents a acceleration quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_jerk_unit<T>::value to test the unit represents a jerk quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_force_unit<T>::value to test the unit represents a force quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_pressure_unit<T>::value to test the unit represents a pressure quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_charge_unit<T>::value to test the unit represents a charge quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_energy_unit<T>::value to test the unit represents a energy quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_power_unit<T>::value to test the unit represents a power quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_voltage_unit<T>::value to test the unit represents a voltage quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_capacitance_unit<T>::value to test the unit represents a capacitance quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_impedance_unit<T>::value to test the unit represents a impedance quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_conductance_unit<T>::value to test the unit represents a conductance quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_magnetic_flux_unit<T>::value to test the unit represents a magnetic_flux quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_magnetic_field_strength_unit<T>::value to test the unit represents a magnetic_field_strength quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_inductance_unit<T>::value to test the unit represents a inductance quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_luminous_flux_unit<T>::value to test the unit represents a luminous_flux quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_illuminance_unit<T>::value to test the unit represents a illuminance quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_radioactivity_unit<T>::value to test the unit represents a radioactivity quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_torque_unit<T>::value to test the unit represents a torque quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_area_unit<T>::value to test the unit represents a area quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_volume_unit<T>::value to test the unit represents a volume quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_density_unit<T>::value to test the unit represents a density quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_concentration_unit<T>::value to test the unit represents a concentration quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_data_unit<T>::value to test the unit represents a data quantity.
Template Parameters
Inherits from std::true_type or std::false_type. Use is_data_transfer_rate_unit<T>::value to test the unit represents a data_transfer_rate quantity.
Template Parameters
Typedef Documentation
template<class U> using units::traits::base_unit_of = typename units::detail::base_unit_of_impl<U>::type
Trait which returns the base_unit type that a unit is originally derived from. Since units can be derived from other unit types in addition to base_unit types, the base_unit_type typedef will not always be a base_unit (or unit category). Since compatible
Author
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| Wed Feb 11 2026 09:38:34 | Version 2.3.0 |