diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/sail_lib.ml | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/sail_lib.ml b/src/sail_lib.ml index b4c5a8aa..415fc9fd 100644 --- a/src/sail_lib.ml +++ b/src/sail_lib.ml @@ -644,3 +644,13 @@ let spaces_matches_prefix s = | 0 -> ZNone () | n -> ZSome ((), Big_int.of_int n) + +let hex_bits_12_matches_prefix s = + match maybe_int_of_prefix s with + | ZNone () -> ZNone () + | ZSome (n, len) -> + let n = Big_int.to_int n in + if 0 <= n && n < 4096 then + ZSome ((bits_of_int 2048 n, len)) + else + ZNone () |