(***********************************************************************)
(*                                                                     *)
(*                                OCaml                                *)
(*                                                                     *)
(*          Gabriel Scherer, projet Gallium, INRIA Rocquencourt        *)
(*                                                                     *)
(*  Copyright 2012 Institut National de Recherche en Informatique et   *)
(*  en Automatique.  All rights reserved.  This file is distributed    *)
(*  under the terms of the Q Public License version 1.0.               *)
(*                                                                     *)
(***********************************************************************)

(* a simple test with mutually recursive functions *)
let test =
  let rec even = function
    | 0 -> true
    | n -> odd (n - 1)
  and odd = function
    | 0 -> false
    | n -> even (n - 1)
  in
  List.iter (fun i -> assert (even i <> odd i && even i = (i mod 2 = 0)))
    [0;1;2;3;4;5;6]