(** * Facts and  tactics using [Int] *)
Module MoreInt (Import I:Int).
Local Notation int := I.t.

Lemma leb_nle n p : (n <=? p) = false <-> ~(n <= p).
Global Hint Rewrite ->
i2z_0 i2z_1 i2z_2 i2z_3 i2z_add i2z_opp i2z_sub i2z_mul i2z_max
i2z_eqb i2z_ltb i2z_leb : i2z.