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(* This file checks that operations over int63 are unsigned. *)
Require Import Int63.
Open Scope int63_scope.
(* (0-1) must be the maximum integer value and not negative 1 *)
Check (eq_refl : 1/(0-1) = 0).
Check (eq_refl 0 <: 1/(0-1) = 0).
Check (eq_refl 0 <<: 1/(0-1) = 0).
Definition compute1 := Eval compute in 1/(0-1).
Check (eq_refl compute1 : 0 = 0).
Check (eq_refl : 3 mod (0-1) = 3).
Check (eq_refl 3 <: 3 mod (0-1) = 3).
Check (eq_refl 3 <<: 3 mod (0-1) = 3).
Definition compute2 := Eval compute in 3 mod (0-1).
Check (eq_refl compute2 : 3 = 3).
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