HP 3000 Manuals HP 3000 Manuals
Declaration Section Constant Definition NIL. The definition of the predefined constant NIL is expanded for the system programming extensions. The predefined constant NIL is compatible with any long or short pointer type. When NIL is used in a comparison or assignment, it assumes the pointer class (short or long) of the pointer with which it is being compared, or to which it is being assigned. The predefined constant NIL is compatible with any PROCEDURE/FUNCTION type. A PROCEDURE/FUNCTION variable that has been assigned the value NIL refers to no procedure or function.