Synopsis
int OMis_null_obj(
OMobj_id object_id );
Description
OMis_null_obj is a C macro which tests whether an object id is NULL.
Arguments
object_id
The id of an object.
Returned value
The returned value indicates whether the object id is NULL:
|
Returned value
|
Meaning
|
|
1 |
The object id is NULL. |
|
0 |
The object id is not NULL. |
|
OM_STAT_ERROR |
OM_null_obj has failed. See Return Status |
Example
/* Test whether val1_id is null. */
OMobj_id val1_id;
...
if (OMis_null_obj(val1_id))
printf("Object id is NULL\n");