Return the (signed) number of days between the specified beginDate and endDate according to the specified day-count convention. The behavior is undefined unless isSupported(convention). If beginDate <= endDate then the result is non-negative. Note that reversing the order of beginDate and endDate negates the result.
Declared in <bbldc_basicdaycountutil.h>
static
int
daysDiff(
bdlt::Date const& beginDate,
bdlt::Date const& endDate,
DayCountConvention::Enum convention);