LOWER2(x,n) returns the value:
If x is SIGNED REAL FIXED BIN(p,0), then the result has the same attributes. Otherwise, x is converted to SIGNED REAL FIXED BIN(p,0) and the result has the same attributes.
The result is undefined if n is negative or if n is greater than M.
lower2 (+6,1) /* Produces 3 */
lower2 (-6,1) /* Produces -3 */
lower2 (-7,1) /* Produces -4 */