diff options
Diffstat (limited to 'riscV/Archi.v')
| -rw-r--r-- | riscV/Archi.v | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/riscV/Archi.v b/riscV/Archi.v index 3758d686..e4078132 100644 --- a/riscV/Archi.v +++ b/riscV/Archi.v @@ -16,7 +16,7 @@ (** Architecture-dependent parameters for RISC-V *) -Require Import ZArith. +Require Import ZArith List. (*From Flocq*) Require Import Binary Bits. @@ -40,26 +40,28 @@ Qed. except the MSB, a.k.a. the quiet bit." Exceptions are operations manipulating signs. *) -Definition default_nan_64 : { x : binary64 | is_nan _ _ x = true } := - exist _ (B754_nan 53 1024 false (iter_nat 51 _ xO xH) (eq_refl true)) (eq_refl true). +Definition default_nan_64 := (false, iter_nat 51 _ xO xH). +Definition default_nan_32 := (false, iter_nat 22 _ xO xH). -Definition choose_binop_pl_64 (pl1 pl2 : positive) := - false. (**r irrelevant *) +Definition choose_nan_64 (l: list (bool * positive)) : bool * positive := + default_nan_64. -Definition default_nan_32 : { x : binary32 | is_nan _ _ x = true } := - exist _ (B754_nan 24 128 false (iter_nat 22 _ xO xH) (eq_refl true)) (eq_refl true). +Definition choose_nan_32 (l: list (bool * positive)) : bool * positive := + default_nan_32. -Definition choose_binop_pl_32 (pl1 pl2 : positive) := - false. (**r irrelevant *) +Lemma choose_nan_64_idem: forall n, + choose_nan_64 (n :: n :: nil) = choose_nan_64 (n :: nil). +Proof. auto. Qed. -Definition fpu_returns_default_qNaN := true. +Lemma choose_nan_32_idem: forall n, + choose_nan_32 (n :: n :: nil) = choose_nan_32 (n :: nil). +Proof. auto. Qed. Definition float_of_single_preserves_sNaN := false. Global Opaque ptr64 big_endian splitlong - default_nan_64 choose_binop_pl_64 - default_nan_32 choose_binop_pl_32 - fpu_returns_default_qNaN + default_nan_64 choose_nan_64 + default_nan_32 choose_nan_32 float_of_single_preserves_sNaN. (** Whether to generate position-independent code or not *) |