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

type ty0
instance (Size ty0) let size = 0 end
declare isabelle target_rep type ty1 = `0`

val undefined_int : forall 'rv 'e. unit -> monad 'rv integer 'e
let undefined_int () = return 0

val undefined_bitvector : forall 'rv 'a 'e. Size 'a => integer -> monad 'rv (mword 'a) 'e
let undefined_bitvector len = return (zeros(len))

val undefined_unit : forall 'rv 'e. unit -> monad 'rv unit 'e
let undefined_unit () = return ()

val internal_pick : forall 'rv 'a 'e. list 'a -> monad 'rv 'a 'e
let internal_pick xs = return (List_extra.head xs)