
elapsed_time — Returns the amount of elapsed time between two dates
package require nstcltime ?1.0.1?
package require nstcl ?1.0?::nstcl::elapsed_time ?absolute_value? ?floating_point? ?units units? date1 ?date2?
Calculates the difference between two dates (which can be in any format understood by [clock scan]) and returns the elapsed time in units.
 absolute_value
 If this switch is present, and the calculated elapsed time is a negative number, then the absolute value of elapsed time is returned instead.
 floating_point
 If this switch is not present then the result of the calculation is truncated to the nearest whole integer value.
 units (defaults to seconds)
 Specifies the units the elapsed time calculation is to be done in. units may be any meaningful value understood by [clock scan] (such as seconds, minutes, hours, days, weeks, fortnights, etc.)
nstcl, time