RANGEDATE (46) FUNCTION (.5)
Name
Value
NAME
RANGEDATE
MUMPS CODE
S %Y=X3,Y=X2,X2=X S:X>X1 X2=X1,X1=X S:Y>%Y %Y=Y,Y=X3 S:Y>X2 X2=Y S:%Y
EXPLANATION
TAKES 2 DATE RANGES, RETURNS THE NUMBER OF DAYS BY WHICH THEY OVERLAP, OR 0 IF OVERLAP IS INDEFINITE
