diff options
Diffstat (limited to 'riscV/Archi.v')
| -rw-r--r-- | riscV/Archi.v | 39 |
1 files changed, 24 insertions, 15 deletions
diff --git a/riscV/Archi.v b/riscV/Archi.v index a1664262..61d129d0 100644 --- a/riscV/Archi.v +++ b/riscV/Archi.v @@ -16,9 +16,9 @@ (** Architecture-dependent parameters for RISC-V *) -Require Import ZArith. -Require Import Fappli_IEEE. -Require Import Fappli_IEEE_bits. +Require Import ZArith List. +(*From Flocq*) +Require Import Binary Bits. Parameter ptr64 : bool. @@ -38,26 +38,35 @@ Qed. floating-point operation is NaN, it is the canonical NaN. The canonical NaN has a positive sign and all significand bits clear except the MSB, a.k.a. the quiet bit." - We need to extend the [choose_binop_pl] functions to account for - this case. *) + Exceptions are operations manipulating signs. *) -Program Definition default_pl_64 : bool * nan_pl 53 := - (false, iter_nat 51 _ xO xH). +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 (s1: bool) (pl1: nan_pl 53) (s2: bool) (pl2: nan_pl 53) := - false. (**r always choose first NaN *) +Definition choose_nan_64 (l: list (bool * positive)) : bool * positive := + default_nan_64. -Program Definition default_pl_32 : bool * nan_pl 24 := - (false, iter_nat 22 _ xO xH). +Definition choose_nan_32 (l: list (bool * positive)) : bool * positive := + default_nan_32. -Definition choose_binop_pl_32 (s1: bool) (pl1: nan_pl 24) (s2: bool) (pl2: nan_pl 24) := - false. (**r always choose first NaN *) +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. (** Whether to generate position-independent code or not *) |