Convert_Boolean_Forward.F
val not : (boolean, boolean) C.From_Arity.ar1
val (&&) : (boolean, boolean, boolean) C.From_Arity.ar2
val (||) : (boolean, boolean, boolean) C.From_Arity.ar2
val true_ : boolean C.From_Arity.ar0
val false_ : boolean C.From_Arity.ar0