2018-01-17 18:19:38 +01:00
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(** Key for hastables that contain tuples of integers encoded in a Zarith integer *)
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include Z
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type kind =
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| Kind_3
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| Kind_6
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| Kind_12
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2018-01-19 18:18:11 +01:00
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| Kind_9
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2018-01-19 17:42:12 +01:00
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| Kind_4
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| Kind_2
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| Kind_1
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2018-01-17 18:19:38 +01:00
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2018-01-19 17:42:12 +01:00
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(** Build a Zkey from an array or 1, 2, 3, 4, 6, or 12 integers *)
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2018-01-17 18:19:38 +01:00
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let of_int_array ~kind a =
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let (<|) x a =
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Z.logor (Z.shift_left x 64) a
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in
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let (<<) x a =
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Int64.logor (Int64.shift_left x 10) (Int64.of_int a)
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in
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let (<+) x a =
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Int64.logor (Int64.shift_left x 16) (Int64.of_int a)
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in
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match kind with
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| Kind_3 -> (Int64.of_int a.(0)) << a.(1) << a.(2) |> Z.of_int64
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| Kind_6 -> (Int64.of_int a.(0)) << a.(1) << a.(2) << a.(3) << a.(4) << a.(5)
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|> Z.of_int64
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| Kind_12 ->
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let a =
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(Int64.of_int a.(0)) << a.(1) << a.(2) << a.(3) << a.(4) << a.(5)
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|> Z.of_int64
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and b =
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(Int64.of_int a.(6)) << a.(7) << a.(8) << a.(9) << a.(10) << a.(11)
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|> Z.of_int64
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in a <| b
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2018-01-19 18:18:11 +01:00
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| Kind_9 ->
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let a =
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(Int64.of_int a.(0)) << a.(1) << a.(2) << a.(3) << a.(4) << a.(5)
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|> Z.of_int64
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and b =
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(Int64.of_int a.(6)) << a.(7) << a.(8)
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|> Z.of_int64
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in a <| b
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2018-01-19 17:42:12 +01:00
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| Kind_4 -> (Int64.of_int a.(0)) <+ a.(1) <+ a.(2) <+ a.(3) |> Z.of_int64
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| Kind_2 -> (Int64.of_int a.(0)) <+ a.(1) |> Z.of_int64
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| Kind_1 -> Z.of_int a.(0)
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2018-01-17 18:19:38 +01:00
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(** Transform the Zkey into an int array *)
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let to_int_array ~kind a =
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match kind with
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| Kind_3 -> [| Z.to_int @@ Z.extract a 20 10 ;
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Z.to_int @@ Z.extract a 10 10 ;
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Z.to_int @@ Z.extract a 0 10 |]
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| Kind_6 -> [| Z.to_int @@ Z.extract a 50 10 ;
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Z.to_int @@ Z.extract a 40 10 ;
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Z.to_int @@ Z.extract a 30 10 ;
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Z.to_int @@ Z.extract a 20 10 ;
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Z.to_int @@ Z.extract a 10 10 ;
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Z.to_int @@ Z.extract a 0 10 |]
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| Kind_12 -> [| Z.to_int @@ Z.extract a 114 10 ;
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Z.to_int @@ Z.extract a 104 10 ;
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Z.to_int @@ Z.extract a 94 10 ;
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Z.to_int @@ Z.extract a 84 10 ;
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Z.to_int @@ Z.extract a 74 10 ;
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Z.to_int @@ Z.extract a 64 10 ;
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Z.to_int @@ Z.extract a 50 10 ;
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Z.to_int @@ Z.extract a 40 10 ;
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Z.to_int @@ Z.extract a 30 10 ;
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Z.to_int @@ Z.extract a 20 10 ;
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Z.to_int @@ Z.extract a 10 10 ;
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Z.to_int @@ Z.extract a 0 10 |]
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2018-01-19 18:18:11 +01:00
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| Kind_9 -> [| Z.to_int @@ Z.extract a 84 10 ;
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Z.to_int @@ Z.extract a 74 10 ;
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Z.to_int @@ Z.extract a 64 10 ;
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Z.to_int @@ Z.extract a 50 10 ;
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Z.to_int @@ Z.extract a 40 10 ;
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Z.to_int @@ Z.extract a 30 10 ;
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Z.to_int @@ Z.extract a 20 10 ;
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Z.to_int @@ Z.extract a 10 10 ;
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Z.to_int @@ Z.extract a 0 10 |]
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2018-01-19 17:42:12 +01:00
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| Kind_4 -> [| Z.to_int @@ Z.extract a 48 16 ;
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Z.to_int @@ Z.extract a 32 16 ;
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Z.to_int @@ Z.extract a 16 16 ;
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Z.to_int @@ Z.extract a 0 16 |]
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| Kind_2 -> [| Z.to_int @@ Z.extract a 16 16 ;
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Z.to_int @@ Z.extract a 0 16 |]
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| Kind_1 -> [| Z.to_int a |]
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2018-01-17 18:19:38 +01:00
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let to_string ~kind a =
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"< " ^ ( Z.to_string a ) ^ " | " ^ (
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to_int_array kind a
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|> Array.map string_of_int
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|> Array.to_list
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|> String.concat ", "
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) ^ " >"
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(*
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let debug () =
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let k2 = of_int_array Kind_2 [| 1 ; 2 |]
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and k3 = of_int_array Kind_3 [| 1 ; 2 ; 3 |]
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and k4 = of_int_array Kind_4 [| 1 ; 2 ; 3; 4 |]
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and k6 = of_int_array Kind_6 [| 1 ; 2 ; 3; 4 ; 5; 6|]
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and k12 = of_int_array Kind_12 [| 1 ; 2 ; 3; 4 ; 5; 6 ; 7 ; 8 ; 9 ; 10 ; 11; 12|]
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in
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print_endline @@ to_string Kind_2 k2 ;
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print_endline @@ to_string Kind_3 k3 ;
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print_endline @@ to_string Kind_4 k4 ;
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print_endline @@ to_string Kind_6 k6 ;
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print_endline @@ to_string Kind_12 k12
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let () = debug ()
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*)
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