[#mp_units-utility-safe_int-07-operator_dec-0e]
= 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:

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

== Synopsis

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

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

== Return Value

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‐‐()`
|===


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