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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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25
Task/Averages-Mean-angle/OCaml/averages-mean-angle-1.ocaml Normal file
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let pi = 3.14159_26535_89793_23846_2643
let deg2rad d =
d *. pi /. 180.0
let rad2deg r =
r *. 180.0 /. pi
let mean_angle angles =
let rad_angles = List.map deg2rad angles in
let sum_sin = List.fold_left (fun sum a -> sum +. sin a) 0.0 rad_angles
and sum_cos = List.fold_left (fun sum a -> sum +. cos a) 0.0 rad_angles
in
rad2deg (atan2 sum_sin sum_cos)
let test angles =
Printf.printf "The mean angle of [%s] is: %g degrees\n"
(String.concat "; " (List.map (Printf.sprintf "%g") angles))
(mean_angle angles)
let () =
test [350.0; 10.0];
test [90.0; 180.0; 270.0; 360.0];
test [10.0; 20.0; 30.0];
;;

7
Task/Averages-Mean-angle/OCaml/averages-mean-angle-2.ocaml Normal file
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open Complex
let mean_angle angles =
let sum =
List.fold_left (fun sum a -> add sum (polar 1.0 (deg2rad a))) zero angles
in
rad2deg (arg sum)