[#BloombergLP-bdlt-Time-addInterval]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::xref:BloombergLP/bdlt/Time.adoc[Time]::addInterval
:relfileprefix: ../../../
:mrdocs:

Increase the value of this time object by the specified `interval` of time, and return the (signed) number of times that the 23:59:59.999999 ‐ 00:00:00.000000 boundary was crossed in performing the operation. The behavior is undefined unless the number of crossings that would be returned can be represented by an `int`.

== Synopsis

Declared in `<bdlt_time.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
addInterval(xref:BloombergLP/bdlt/DatetimeInterval.adoc[DatetimeInterval] const& interval);
----


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