[#mp_units-absolute_point_origin]
= xref:mp_units.adoc[mp_units]::absolute_point_origin
:relfileprefix: ../
:mrdocs:

A point origin located at the zero point of a quantity specification

== Synopsis

Declared in `<mp‐units/framework/quantity_point.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    xref:mp_units/QuantitySpec.adoc[QuantitySpec] auto QS,
    auto Args...>
struct absolute_point_origin;
----

== Description

Defines the root of a coordinate frame from which quantity points measured in terms of `QS` are expressed. Optional trailing arguments may specify additional policies, such as bounds checking.

== Static Data Members

[cols="1,4"]
|===
| Name| Description
| xref:mp_units/absolute_point_origin/_bounds_.adoc[`_bounds_`] 
| The bounds policy applied to points measured from this origin, if any was provided in `Args`
| xref:mp_units/absolute_point_origin/_quantity_spec_.adoc[`_quantity_spec_`] 
| The quantity specification of the quantities measured from this origin
|===


== Non-Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:mp_units/get_quantity_spec-0ca7.adoc[`get_quantity_spec`]
| 
| xref:mp_units/operator_plus-0a0.adoc[`operator+`]
| Addition operator
| xref:mp_units/operator_plus-0b.adoc[`operator+`]
| Addition operator
| xref:mp_units/operator_minus-04.adoc[`operator‐`]
| Subtraction operator
| xref:mp_units/operator_minus-0b.adoc[`operator‐`]
| Subtraction operator
|===

== Template Parameters

[cols="1,4"]
|===
| Name| Description
| *QS*
| quantity specification of the quantities measured from this origin
| *Args*
| optional policy arguments (e.g. a bounds policy)
|===


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