[#mp_units-quantity-01-operator_dec-05]
= xref:mp_units.adoc[mp_units]::xref:mp_units/quantity-01.adoc[quantity]::operator‐‐
:relfileprefix: ../../
:mrdocs:

Decrement operator

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
xref:mp_units/quantity-01.adoc[quantity]&
operator‐‐() &
requires requires(rep& v) {
      { ‐‐v } ‐> std::same_as<rep&>;
    };
----

== Return Value

Reference to the current object


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