[#BloombergLP-bbldc-CalendarBus252-daysDiff]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bbldc.adoc[bbldc]::xref:BloombergLP/bbldc/CalendarBus252.adoc[CalendarBus252]::daysDiff
:relfileprefix: ../../../
:mrdocs:

Return the (signed) number of days between the specified `beginDate` and `endDate` according to the BUS‐252 day‐count convention with the specified `calendar` providing the definition of business days. If `beginDate <= endDate`, then the result is non‐negative. The behavior is undefined unless `calendar.isInRange(beginDate)` and `calendar.isInRange(endDate)`. Note that reversing the order of `beginDate` and `endDate` negates the result and that the result is 0 when `beginDate == endDate`.

== Synopsis

Declared in `<bbldc_calendarbus252.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
int
daysDiff(
    xref:BloombergLP/bdlt/Date.adoc[bdlt::Date] const& beginDate,
    xref:BloombergLP/bdlt/Date.adoc[bdlt::Date] const& endDate,
    xref:BloombergLP/bdlt/Calendar.adoc[bdlt::Calendar] const& calendar);
----


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