Returns true if mod is an ancestor of other. Returns nil
if there’s no relationship between the two. (Think of the relationship
in terms of the class definition: “class A<B” implies
“B>A”).
/*
* call-seq:
* mod > other => true, false, or nil
*
* Returns true if <i>mod</i>isanancestorof<i>other</i>. Returns
* <code>nil</code>ifthere's no relationship between the two.
* (Think of the relationship in terms of the class definition:
* "class A<B" implies "B>A").
*
*/
static VALUE
rb_mod_gt(mod, arg)
VALUE mod, arg;
{
if (mod == arg) return Qfalse;
return rb_mod_ge(mod, arg);
}