diff options
| -rw-r--r-- | kvx/FPDivision64.v | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/kvx/FPDivision64.v b/kvx/FPDivision64.v index 34dc108b..f991ff93 100644 --- a/kvx/FPDivision64.v +++ b/kvx/FPDivision64.v @@ -2347,8 +2347,8 @@ Definition e_float_const c := Eop (Ofloatconst c) Enil. Definition e_fmaddf a b c := Eop Ofmaddf (a ::: b ::: c ::: Enil). Definition e_fmsubf a b c := Eop Ofmsubf (a ::: b ::: c ::: Enil). Definition e_addlimm a b := Eop (Oaddlimm b) (a ::: Enil). -Definition e_msub a b c := Eop Omsub (a ::: b ::: c ::: Enil). -Definition e_ite ty c vc v1 v2 := Eop (Osel c ty) (vc ::: v1 ::: v2 ::: Enil). +Definition e_msubl a b c := Eop Omsubl (a ::: b ::: c ::: Enil). +Definition e_ite ty c vc v1 v2 := Eop (Osel c ty) (v1 ::: v2 ::: vc ::: Enil). Definition a_var1 := Eletvar (4%nat). Definition a_d_var1 := Eletvar (3%nat). @@ -2419,5 +2419,17 @@ Definition step1_var3 := Eletvar (1%nat). Definition step2_var3 := Eletvar (0%nat). Definition e_step3 := - e_ite Tlong (Ccompl0 Clt) (e_msub a_var3 step2_var3 b_var3) + e_ite Tlong (Ccompl0 Clt) (e_msubl step1_var3 step2_var3 b_var3) (e_addlimm step2_var3 Int64.mone) step2_var3. + +Lemma e_step3_correct : + forall (ge : genv) (sp: val) cmenv memenv (le : letenv) + (expr_a : expr) (a : int64) (EVAL_a : eval_expr ge sp cmenv memenv le expr_a (Vlong a)) + (expr_b : expr) (b : int64) (EVAL_b : eval_expr ge sp cmenv memenv le expr_b (Vlong b)), + (eval_expr ge sp cmenv memenv le (e_setup3 expr_a expr_b (e_step3)) + (step2_div_long (step1_div_longu (Vlong a) (Vlong b)) (Vlong b))). +Proof. +intros. +unfold e_setup2, e_setup1, e_step2, step2_div_long, step2_div_long', step2_real_div_long, approx_inv_longu, step1_div_longu. +repeat (econstructor + apply eval_lift + eassumption). +Qed. |