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open import Pervasives_extra
open import Sail_instr_kinds
open import Sail_values
open import Sail_operators_mwords
open import Prompt_monad
open import State
let undefined_int () = return (0:ii)
val undefined_bitvector : forall 'rv 'a 'e. Bitvector 'a => integer -> monad 'rv 'a 'e
let undefined_bitvector len = return (of_bools (repeat [false] len))
val slice : forall 'a 'b. Size 'a, Size 'b => mword 'a -> integer -> integer -> mword 'b
let slice v lo len =
subrange_vec_dec v (lo + len - 1) lo
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