COBOL Manual for TNS and TNS/R Programs

Procedure Division
HP COBOL Manual for TNS and TNS/R Programs—522555-006
8-58
Simple Conditions
Relation Conditions With Pointer Operands
pointer-subject
pointer-object
identifier-1
is a level-01 or level-77 data item defined in the Linkage Section or Data
Division.
identifier-2
is a data item with USAGE POINTER.
NULL
NULLS
is a null address (all 1s) that causes an address fault if a pointer with that value
is referenced. NULL or NULLS can be used for pointer-subject or
pointer-object, but not both.
relationship
pointer-subject
IS
pointer-objectrelationship
VST602.vsd
NULL
OFADDRESS
identifier-1
identifier-2
NULLS
VST603.vsd
=
EQUAL
TONOTIS
VST604.vsd