The built-in function %LOC computes the internal address of a storage item. It takes the following form:

 %LOC (arg)

arg

Is the name of an actual argument. It must be a variable, an expression, or the name of a procedure. (It must not be the name of an internal procedure or statement function.)

The %LOC function produces an integer (INTEGER(8) on OpenVMS, Tru64 UNIX, and Linux systems; INTEGER(4) on Windows NT and Windows 9* systems) value that represents the location of the given argument. You can use this integer value as an item in an arithmetic expression.