[#BloombergLP-bsls-TimeInterval-operator_minus_eq-0b]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bsls.adoc[bsls]::xref:BloombergLP/bsls/TimeInterval.adoc[TimeInterval]::operator&hyphen;&equals;
:relfileprefix: ../../../
:mrdocs:

Subtract the specified `rhs` time interval from this object&period;

== Synopsis

Declared in `&lt;bsls&lowbar;timeinterval&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bsls/TimeInterval.adoc[TimeInterval]&
operator&hyphen;&equals;(xref:BloombergLP/bsls/TimeInterval.adoc[TimeInterval] const& rhs);
----

== Description

Subtract from this time interval the value of the specified `rhs` time interval, and return a reference providing modifiable access to this object&period; The behavior is undefined unless `LLONG&lowbar;MIN !&equals; rhs&period;seconds()`, and the total number of seconds in the resulting time interval can be represented with a 64&hyphen;bit signed integer&period;

== Return Value

a reference providing modifiable access to this object

== Parameters

[cols="1,4"]
|===
| Name| Description
| *rhs*
| right&hyphen;hand time interval
|===


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