diff options
Diffstat (limited to 'x86_32/Archi.v')
| -rw-r--r-- | x86_32/Archi.v | 38 |
1 files changed, 25 insertions, 13 deletions
diff --git a/x86_32/Archi.v b/x86_32/Archi.v index 8e96b4f1..e9d05c14 100644 --- a/x86_32/Archi.v +++ b/x86_32/Archi.v @@ -16,9 +16,9 @@ (** Architecture-dependent parameters for x86 in 32-bit mode *) -Require Import ZArith. -Require Import Fappli_IEEE. -Require Import Fappli_IEEE_bits. +Require Import ZArith List. +(*From Flocq*) +Require Import Binary Bits. Definition ptr64 := false. @@ -34,21 +34,33 @@ Proof. unfold splitlong. destruct ptr64; simpl; congruence. Qed. -Program Definition default_pl_64 : bool * nan_pl 53 := - (true, iter_nat 51 _ xO xH). +Definition default_nan_64 := (true, iter_nat 51 _ xO xH). +Definition default_nan_32 := (true, iter_nat 22 _ xO xH). -Definition choose_binop_pl_64 (s1: bool) (pl1: nan_pl 53) (s2: bool) (pl2: nan_pl 53) := - false. (**r always choose first NaN *) +(* Always choose the first NaN argument, if any *) -Program Definition default_pl_32 : bool * nan_pl 24 := - (true, iter_nat 22 _ xO xH). +Definition choose_nan_64 (l: list (bool * positive)) : bool * positive := + match l with nil => default_nan_64 | n :: _ => n end. -Definition choose_binop_pl_32 (s1: bool) (pl1: nan_pl 24) (s2: bool) (pl2: nan_pl 24) := - false. (**r always choose first NaN *) +Definition choose_nan_32 (l: list (bool * positive)) : bool * positive := + match l with nil => default_nan_32 | n :: _ => n end. + +Lemma choose_nan_64_idem: forall n, + choose_nan_64 (n :: n :: nil) = choose_nan_64 (n :: nil). +Proof. auto. Qed. + +Lemma choose_nan_32_idem: forall n, + choose_nan_32 (n :: n :: nil) = choose_nan_32 (n :: nil). +Proof. auto. Qed. + +Definition fma_order {A: Type} (x y z: A) := (x, y, z). + +Definition fma_invalid_mul_is_nan := false. Definition float_of_single_preserves_sNaN := false. Global Opaque ptr64 big_endian splitlong - default_pl_64 choose_binop_pl_64 - default_pl_32 choose_binop_pl_32 + default_nan_64 choose_nan_64 + default_nan_32 choose_nan_32 + fma_order fma_invalid_mul_is_nan float_of_single_preserves_sNaN. |