<html><head><style type="text/css">.style1 {font-family: "Times New Roman";}</style></head><body>Are any values of ERL_NIF_TERM reserved to mean "invalid"? I.e. is<BR>
there a blessed equivalent of<BR>
<BR>
ERL_NIF_TERM optional = ERL_NIF_TERM_UNINITIALISED;<BR>
.<BR>
.<BR>
.<BR>
if (optional != ERL_NIF_TERM_UNINITIALISED)<BR>
do_something(optional)<BR>
<BR>
?<BR>
<BR>
Robert<BR>
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