int baseof(struct b, struct s)
Test if the type of struct <b> is a base of struct <s> (the values of <b> and <s> are irrelevant). Results are: 0: <b> is not a base of <s>, nor is <b> of equal type as <s> (though <s> might be a base of <b>). 1: <b> is a true base of <s> 2: <b> and <s> are the same struct type
Introducted in LDMud 3.3.344.