[#BloombergLP-bdlt-DatetimeInterval-isValid]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::xref:BloombergLP/bdlt/DatetimeInterval.adoc[DatetimeInterval]::isValid
:relfileprefix: ../../../
:mrdocs:

Return whether the given field values can form a valid time interval.

== Synopsis

Declared in `<bdlt_datetimeinterval.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
bool
isValid(
    int days,
    xref:BloombergLP/bsls/Types/Int64.adoc[bsls::Types::Int64] hours = 0,
    xref:BloombergLP/bsls/Types/Int64.adoc[bsls::Types::Int64] minutes = 0,
    xref:BloombergLP/bsls/Types/Int64.adoc[bsls::Types::Int64] seconds = 0,
    xref:BloombergLP/bsls/Types/Int64.adoc[bsls::Types::Int64] milliseconds = 0,
    xref:BloombergLP/bsls/Types/Int64.adoc[bsls::Types::Int64] microseconds = 0);
----

== Description

Return `true` if a time interval object having the value given by the specified `days`, and the optionally specified `hours`, `minutes`, `seconds`, `milliseconds`, and `microseconds` can be represented as a `DatetimeInterval` and `false` otherwise. Unspecified arguments default to 0. The resulting time interval value is valid if the days field does not overflow a 32‐bit integer. Note that the arguments may be supplied using a mixture of positive, negative, and 0 values.

== Return Value

`true` if the field values form a valid interval, and `false` otherwise

== Parameters

[cols="1,4"]
|===
| Name| Description
| *days*
| day count
| *hours*
| hour count (optional)
| *minutes*
| minute count (optional)
| *seconds*
| second count (optional)
| *milliseconds*
| millisecond count (optional)
| *microseconds*
| microsecond count (optional)
|===


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