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.
Declared in <bbldc_calendarbus252.h>
static
int
daysDiff(
bdlt::Date const& beginDate,
bdlt::Date const& endDate,
bdlt::Calendar const& calendar);