36 lines
1,017 B
OCaml
36 lines
1,017 B
OCaml
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module I = Z
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let pr ch x =
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output_string ch (I.to_string x);
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flush ch
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let chk_extract x o l =
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let expected =
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I.logand (I.shift_right x o) (I.pred (I.shift_left (I.of_int 1) l))
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and actual =
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I.extract x o l in
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if actual <> expected then (Printf.printf "extract %a %d %d = %a found %a\n" pr x o l pr expected pr actual; failwith "test failed")
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let doit () =
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let max = 128 in
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for l = 1 to max do
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if l mod 16 == 0 then Printf.printf "%i/%i\n%!" l max;
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for o = 0 to 256 do
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for n = 0 to 256 do
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let x = I.shift_left I.one n in
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chk_extract x o l;
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chk_extract (I.mul x x) o l;
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chk_extract (I.mul x (I.mul x x)) o l;
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chk_extract (I.succ x) o l;
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chk_extract (I.pred x) o l;
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chk_extract (I.neg (I.mul x x)) o l;
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chk_extract (I.neg (I.mul x (I.mul x x))) o l;
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chk_extract (I.neg x) o l;
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chk_extract (I.neg (I.succ x)) o l;
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chk_extract (I.neg (I.pred x)) o l;
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done
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done
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done
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let _ = doit ()
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