Return the (signed) number of days between the specified beginDate and endDate. If beginDate <= endDate, then the result is non-negative. The behavior is undefined unless firstDate() <= beginDate <= lastDate() and firstDate() <= endDate <= lastDate(). Note that reversing the order of beginDate and endDate negates the result.
Declared in <bbldc_daterangedaycount.h>
virtual
int
daysDiff(
bdlt::Date const& beginDate,
bdlt::Date const& endDate) const = 0;