match e1,e2 with
| Constant (u1,a1),Constant (u2,a2) ->
let x = NReference.compare u1 u2 in
match e1,e2 with
| Constant (u1,a1),Constant (u2,a2) ->
let x = NReference.compare u1 u2 in
- if x = 0 then Pervasives.compare a1 a2 else x
- | e1,e2 -> Pervasives.compare e1 e2
+ if x = 0 then Stdlib.compare a1 a2 else x
+ | e1,e2 -> Stdlib.compare e1 e2