POS Function
The POS function returns a value if the value is positive, otherwise it returns zero.
Syntax
POS(value)
Example
Assume the following:
BANK1 = c1 = 500
BANK2 = c2 = -500
BANK3 = c3 = 1000
Then:
POS(c1) = 500 and POS(-c1) = 0
POS(c2) = 0 and POS(-c2) = 500
POS(c3) = 1000 and POS(-c3) = 0
Therefore:
Bank Balance = POS(c1)+POS(c2)+POS(c3) = 1500
Bank Overdraft = POS(-c1)+POS(-c2)+POS(-c3) = 500