[#mp_units-utility-safe_int-07-operator_dec-0f6]
= xref:mp_units.adoc[mp_units]::xref:mp_units/utility.adoc[utility]::xref:mp_units/utility/safe_int-07.adoc[safe_int]::operator‐‐
:relfileprefix: ../../../
:mrdocs:

Decrement operators

== Synopses

Declared in `<mp‐units/utility/safe_int.h>`

Pre‐decrements the wrapped value, reacting to `ErrorPolicy` on overflow.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
xref:mp_units/utility/safe_int-07.adoc[safe_int]&
xref:mp_units/utility/safe_int-07/operator_dec-0fa.adoc[operator‐‐]();
----

[.small]#xref:mp_units/utility/safe_int-07/operator_dec-0fa.adoc[_» more..._]#

Post‐decrements the wrapped value, reacting to `ErrorPolicy` on overflow.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
xref:mp_units/utility/safe_int-07.adoc[safe_int]
xref:mp_units/utility/safe_int-07/operator_dec-0e.adoc[operator‐‐](int tag);
----

[.small]#xref:mp_units/utility/safe_int-07/operator_dec-0e.adoc[_» more..._]#

== Return Value

* a reference to `*this`, after the decrement
* a copy of `*this`, before the decrement

== Parameters

[cols="1,4"]
|===
| Name| Description
| *tag*
| unused tag parameter that distinguishes this postfix form from the prefix `operator‐‐()`
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#