diff options
| author | Son HO | 2023-12-14 16:49:34 +0100 |
|---|---|---|
| committer | GitHub | 2023-12-14 16:49:34 +0100 |
| commit | c3e0b90e422cbd902ee6d2b47073940c0017b7fb (patch) | |
| tree | 92da14273eb068bcf418a2bdf9fbb6d27ba86102 /backends | |
| parent | c6247e0c103cc1dc95c2a63ae01602c4a1208dc4 (diff) | |
| parent | b32fd66b71ad8fe28449d87a2e0334fdd36e286a (diff) | |
Merge pull request #53 from AeneasVerif/son/casts
Add support for casts between integers and booleans
Diffstat (limited to 'backends')
| -rw-r--r-- | backends/coq/Primitives.v | 4 | ||||
| -rw-r--r-- | backends/fstar/Primitives.fst | 4 | ||||
| -rw-r--r-- | backends/lean/Base/Primitives/Scalar.lean | 4 |
3 files changed, 12 insertions, 0 deletions
diff --git a/backends/coq/Primitives.v b/backends/coq/Primitives.v index 99ffe070..84280b96 100644 --- a/backends/coq/Primitives.v +++ b/backends/coq/Primitives.v @@ -266,6 +266,10 @@ Axiom scalar_shr : forall ty0 ty1, scalar ty0 -> scalar ty1 -> result (scalar ty Definition scalar_cast (src_ty tgt_ty : scalar_ty) (x : scalar src_ty) : result (scalar tgt_ty) := mk_scalar tgt_ty (to_Z x). +(* This can't fail, but for now we make all casts faillible (easier for the translation) *) +Definition scalar_cast_bool (tgt_ty : scalar_ty) (x : bool) : result (scalar tgt_ty) := + mk_scalar tgt_ty (if x then 1 else 0). + (** Comparisons *) Definition scalar_leb {ty : scalar_ty} (x : scalar ty) (y : scalar ty) : bool := Z.leb (to_Z x) (to_Z y) . diff --git a/backends/fstar/Primitives.fst b/backends/fstar/Primitives.fst index dd340c00..a3ffbde4 100644 --- a/backends/fstar/Primitives.fst +++ b/backends/fstar/Primitives.fst @@ -273,6 +273,10 @@ let scalar_shr (#ty0 #ty1 : scalar_ty) let scalar_cast (src_ty : scalar_ty) (tgt_ty : scalar_ty) (x : scalar src_ty) : result (scalar tgt_ty) = mk_scalar tgt_ty x +// This can't fail, but for now we make all casts faillible (easier for the translation) +let scalar_cast_bool (tgt_ty : scalar_ty) (x : bool) : result (scalar tgt_ty) = + mk_scalar tgt_ty (if x then 1 else 0) + /// The scalar types type isize : eqtype = scalar Isize type i8 : eqtype = scalar I8 diff --git a/backends/lean/Base/Primitives/Scalar.lean b/backends/lean/Base/Primitives/Scalar.lean index db522df2..a8eda6d5 100644 --- a/backends/lean/Base/Primitives/Scalar.lean +++ b/backends/lean/Base/Primitives/Scalar.lean @@ -411,6 +411,10 @@ def Scalar.or {ty : ScalarTy} (x : Scalar ty) (y : Scalar ty) : Scalar ty := def Scalar.cast {src_ty : ScalarTy} (tgt_ty : ScalarTy) (x : Scalar src_ty) : Result (Scalar tgt_ty) := Scalar.tryMk tgt_ty x.val +-- This can't fail, but for now we make all casts faillible (easier for the translation) +def Scalar.cast_bool (tgt_ty : ScalarTy) (x : Bool) : Result (Scalar tgt_ty) := + Scalar.tryMk tgt_ty (if x then 1 else 0) + -- The scalar types -- We declare the definitions as reducible so that Lean can unfold them (useful -- for type class resolution for instance). |