Method d

chapter21/src/test/java/com/seaofnodes/simple/Eval2.java:295–295

( Node n )

        Object n = val(not.in(1));
        return ( n==null || (n instanceof Double D && D==0.0) || n instanceof Long L && L==0 )
            ? 1L : 0L;
    }

    // Fetch without unboxing, searching up-Frame