blob: e94e7d42bd912d8a12e42e598a55b8a258a85e76 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
|
(** Extraction of [nat] into Haskell's [Int] *)
Require Import Arith.
Require Import ExtrHaskellNatNum.
(**
* Disclaimer: trying to obtain efficient certified programs
* by extracting [nat] into [Int] is definitively *not* a good idea.
* See comments in [ExtrOcamlNatInt.v].
*)
Extract Inductive nat => "Prelude.Int" [ "0" "Prelude.succ" ]
"(\fO fS n -> if n Prelude.== 0 then fO () else fS (n Prelude.- 1))".
|
