+ method fmod = self#prim2 basic_fmod
+ method remainder = self#prim2 basic_remainder
+ method gt = self#prim2 basic_gt
+ method lt = self#prim2 basic_lt
+ method geq = self#prim2 basic_geq
+ method leq = self#prim2 basic_leq
+ method eq = self#prim2 basic_eq
+ method neq = self#prim2 basic_neq
+ method atan2 = self#prim2 basic_atan2