months-from-yearMonthDuration

This function extracts the months component of a yearMonthDuration , as an integer between -11 and +11. For example, if the supplied argument is «P18M » , the result is 6 .

Argument	Data Type	Meaning
input	xdt:yearMonthDuration	The value from which the months component is to be extracted
Result	xs:integer	The number of months in the duration, after normalizing it so the number of months is less than 12. The value will be negative if the duration is negative