Natural Unit

A natural unit represents a product of terms, each involving a distinct basis dimension

Context

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Introduction

#include <xo/unit/natural_unit.hpp>

Representation for the unit associated with a xquantity

  • represents a cartesian product of basis units.

  • constexpr implementation

  • limited support for fractional dimensions such as time^-1/2

object newton<<natural_unit>> newton : n_bpu = 3 newton : bpu_v[] object kg<<bpu>> kg : native_dim = dim::mass kg : scalefactor = 1000/1 kg : power = 1/1 object m<<bpu>> m : native_dim = dim::distance m : scalefactor = 1/1 m : power = 1/1 object s2<<bpu>> s2 : native_dim = dim::time s2 : scalefactor = 1/1 s2 : power = -2/1 newton o-- kg newton o-- m newton o-- s2

natural unit for a Newton (unit of force)

Class

template<typename Int>
class natural_unit

an array representing the cartesian product of distinct basis-power-units

  1. Quantities are represented as a multiple of a natural unit

  2. Each bpu in the array represents a power of a basis dimension, e.g. “meter” or “second^2”.

  3. Each bpu in an array has a different dimension id. For example dim::time, if present, appears once.

  4. Basis dimensions can appear in any order. Order used for constructing abbreviations: will get "kg.m" or "m.kg" depending on the orderin of dim::distance and dim::mass in bpu_v_

Member Variables

Warning

doxygengroup: Cannot find group “natural-unit-instance-vars” in doxygen xml output for project “xodoxxml” from directory: /home/roland/proj/xo/xo-unit/.build-ccov/docs/dox/xml

Type Traits

Warning

doxygengroup: Cannot find group “natural-unit-type-traits” in doxygen xml output for project “xodoxxml” from directory: /home/roland/proj/xo/xo-unit/.build-ccov/docs/dox/xml

Constructors

Warning

doxygengroup: Cannot find group “natural-unit-ctors” in doxygen xml output for project “xodoxxml” from directory: /home/roland/proj/xo/xo-unit/.build-ccov/docs/dox/xml

Access Methods

Warning

doxygengroup: Cannot find group “natural-unit-access-methods” in doxygen xml output for project “xodoxxml” from directory: /home/roland/proj/xo/xo-unit/.build-ccov/docs/dox/xml

General Methods

Warning

doxygengroup: Cannot find group “natural-unit-methods” in doxygen xml output for project “xodoxxml” from directory: /home/roland/proj/xo/xo-unit/.build-ccov/docs/dox/xml

Conversion

Warning

doxygengroup: Cannot find group “natural-unit-conversion-methods” in doxygen xml output for project “xodoxxml” from directory: /home/roland/proj/xo/xo-unit/.build-ccov/docs/dox/xml

Comparison Functions

Warning

doxygengroup: Cannot find group “natural-unit-comparison-functions” in doxygen xml output for project “xodoxxml” from directory: /home/roland/proj/xo/xo-unit/.build-ccov/docs/dox/xml