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+(*
+ * UPEM / L3 / Functional programming / Project: URM
+ * Pacien TRAN-GIRARD, Adam NAILI
+ *)
+
+open Common
+
+let reg_idx (Reg(idx, _)) = idx
+let reg_val (Reg(_, value)) = value
+let reg_compar reg1 reg2 = (reg_val reg1) - (reg_val reg2)
+
+let regs_get reglist idx =
+  List.find (fun (Reg(x,v)) -> x = idx) reglist |> reg_val
+
+let regs_set reglist index value =
+  Reg(index, value) :: List.filter (fun (Reg(x, v)) -> x != index) reglist