--- /dev/null
+(**************************************************************************)
+(* ___ *)
+(* ||M|| *)
+(* ||A|| A project by Andrea Asperti *)
+(* ||T|| *)
+(* ||I|| Developers: *)
+(* ||T|| The HELM team. *)
+(* ||A|| http://helm.cs.unibo.it *)
+(* \ / *)
+(* \ / This file is distributed under the terms of the *)
+(* v GNU General Public License Version 2 *)
+(* *)
+(**************************************************************************)
+
+(* ********************************************************************** *)
+(* Progetto FreeScale *)
+(* *)
+(* Sviluppato da: Ing. Cosimo Oliboni, oliboni@cs.unibo.it *)
+(* Sviluppo: 2008-2010 *)
+(* *)
+(* ********************************************************************** *)
+
+include "num/word32.ma".
+include "num/word16_lemmas.ma".
+
+(* ***** *)
+(* DWORD *)
+(* ***** *)
+
+ndefinition word32_destruct_1 ≝ cn_destruct_1 word32.
+ndefinition word32_destruct_2 ≝ cn_destruct_2 word32.
+
+ndefinition symmetric_eqw32 ≝ symmetric_eqcn ? eq_w16 symmetric_eqw16.
+
+ndefinition eqw32_to_eq ≝ eqcn_to_eq ? eq_w16 eqw16_to_eq.
+ndefinition eq_to_eqw32 ≝ eq_to_eqcn ? eq_w16 eq_to_eqw16.
+
+ndefinition decidable_w32 ≝ decidable_cn ? decidable_w16.
+
+ndefinition neqw32_to_neq ≝ neqcn_to_neq ? eq_w16 neqw16_to_neq.
+ndefinition neq_to_neqw32 ≝ neq_to_neqcn ? eq_w16 neq_to_neqw16 decidable_w16.