d to SV, preloaded into a SV packer object, then unpacked via a compatible <i>unpack</i> operation in SV.</p><p>This example packs all members with one statement.&nbsp; You may need to split into several statements, e.g.&nbsp;  when conditionally packing sub-objects.</p><p>When packing sub-objects, you must first pack a 4-bit value as follows</p><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>0</td><td class=CDLDescription>if the sub-object is NULL or is not to be p