[#BloombergLP-bdlt-Datetime-addSecondsIfValid]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::xref:BloombergLP/bdlt/Datetime.adoc[Datetime]::addSecondsIfValid
:relfileprefix: ../../../
:mrdocs:

Add seconds if the result remains a valid datetime.

== Synopsis

Declared in `<bdlt_datetime.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
addSecondsIfValid(xref:BloombergLP/bsls/Types/Int64.adoc[bsls::Types::Int64] seconds);
----

== Description

Add the specified number of `seconds` to the value of this object, adjusting the "date" part of the object accordingly, if the resulting value is in the valid range for a `Datetime` object. If `24 == hour()` on entry, set the `hour` attribute to 0 before performing the addition. Return 0 on success, and a non‐zero value (with no effect) otherwise. Note that `seconds` may be positive, negative, or 0.

== Return Value

0 on success, and a non‐zero value otherwise

== Parameters

[cols="1,4"]
|===
| Name| Description
| *seconds*
| number of seconds to add (may be negative)
|===


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