44 lines
1.4 KiB
OCaml
44 lines
1.4 KiB
OCaml
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open Hsim.Types
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open Solvers.Zls
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let of_array a = Bigarray.Array1.of_array Bigarray.Float64 Bigarray.c_layout a
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type state = { si : bool; sx : carray }
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let yd = cmake 3
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let zout = cmake 1
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let zsize = 1
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let fzer _ _ _ = zout
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let fout _ _ y = of_array [| y.{0}; y.{1}; y.{2} |]
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let cget s = s.sx
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let cset s lx = { s with sx = lx }
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let zset s _ = s
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let jump _ = true
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let horizon _ = max_float
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let sinus_cosinus theta0 omega =
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let sin0 = Float.sin theta0 in
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let cos0 = Float.cos theta0 in
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let fder _ _ y =
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yd.{0} <- omega *. y.{1}; yd.{1} <- -.omega *. y.{0}; yd.{2} <- 1.0; yd in
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let step { si; sx } _ =
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let sx = if si then of_array [| sin0; cos0; 0.0 |] else sx in
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of_array [| sx.{0}; sx.{1}; sx.{2} |], { sx; si = false } in
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let state = { sx = of_array [| sin0; cos0; 0.0 |]; si = true } in
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let reset _ _ = state in
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HNode {
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state; fder; fzer; fout; step; horizon; cset; cget; zset; zsize; reset; jump
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}
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let errmsg_invalid = "Invalid arguments to model (needed: 2 floats)"
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let errmsg_few = "Too few arguments to model (needed: 2 floats)"
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let errmsg_many = "Too many arguments to model (needed: 2 floats)"
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let sinus_cosinus = function
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| [t0; om] ->
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let t0, om = try float_of_string t0, float_of_string om
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with Failure _ -> raise (Invalid_argument errmsg_invalid) in
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sinus_cosinus t0 om
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| [] | [_] -> raise (Invalid_argument errmsg_few)
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| _ -> raise (Invalid_argument errmsg_many)
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