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(*
* Modelicac
*
* Copyright (C) 2005 - 2007 Imagine S.A.
* For more information or commercial use please contact us at www.amesim.com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*)
module type MatrixElement =
sig
type t
val equal : t -> t -> bool
end
module type S =
sig
type elt
type t
val make : int -> elt -> t
val init : int -> elt -> (int -> int -> elt) -> t
val size : t -> int * int
val get : t -> int -> int -> elt
val set : t -> int -> int -> elt -> unit
val iter : (elt -> unit) -> t -> unit
val iterij : (int -> int -> elt -> unit) -> t -> unit
val row_iter : int -> (elt -> unit) -> t -> unit
val row_iterj : int -> (int -> elt -> unit) -> t -> unit
val row_storage_iterj : int -> (int -> elt -> unit) -> t -> unit
val update_row_storage : int -> (int -> elt -> elt) -> t -> unit
val column_iter : int -> (elt -> unit) -> t -> unit
val column_iteri : int -> (int -> elt -> unit) -> t -> unit
val column_storage_iteri : int -> (int -> elt -> unit) -> t -> unit
val update_column_storage : int -> (int -> elt -> elt) -> t -> unit
end
module Make (M : MatrixElement) : (S with type elt = M.t) =
struct
type elt = M.t
type t =
{
default : elt;
rows : (int * elt ref) list array;
columns : (int * elt ref) list array
}
let make size elt =
{
default = elt;
rows = Array.make size [];
columns = Array.make size []
}
let init size elt f =
let rows = Array.make size []
and columns = Array.make size [] in
for i = 0 to size - 1 do
for j = 0 to size - 1 do
let elt' = f i j in
if M.equal elt' elt then ()
else
let elt'_ref = ref elt' in
rows.(i) <- (j, elt'_ref) :: rows.(i);
columns.(j) <- (i, elt'_ref) :: columns.(j)
done
done;
{
default = elt;
rows = rows;
columns = columns
}
let size mtrx = let size = Array.length mtrx.rows in (size, size)
let get mtrx i j = try !(List.assoc j mtrx.rows.(i)) with
| Not_found -> mtrx.default
let set mtrx i j elt = try (List.assoc j mtrx.rows.(i)) := elt with
| Not_found ->
mtrx.rows.(i) <- (j, ref elt) :: mtrx.rows.(i);
mtrx.columns.(j) <- (i, ref elt) :: mtrx.columns.(j)
let row_iter i f mtrx =
for j = 0 to Array.length mtrx.rows - 1 do
f (get mtrx i j)
done
let row_iterj i f mtrx =
for j = 0 to Array.length mtrx.rows - 1 do
f j (get mtrx i j)
done
let row_storage_iterj i f mtrx =
List.iter (fun (j, elt_ref) -> f j !elt_ref) mtrx.rows.(i)
let update_row_storage i f mtrx =
List.iter (fun (j, elt_ref) -> elt_ref := f j !elt_ref) mtrx.rows.(i)
let column_iter j f mtrx =
for i = 0 to Array.length mtrx.rows - 1 do
f (get mtrx i j)
done
let column_iteri j f mtrx =
for i = 0 to Array.length mtrx.rows - 1 do
f i (get mtrx i j)
done
let column_storage_iteri j f mtrx =
List.iter (fun (i, elt_ref) -> f i !elt_ref) mtrx.columns.(j)
let update_column_storage j f mtrx =
List.iter (fun (i, elt_ref) -> elt_ref := f i !elt_ref) mtrx.columns.(j)
let iter f mtrx =
for i = 0 to Array.length mtrx.rows - 1 do row_iter i f mtrx done
let iterij f mtrx =
for i = 0 to Array.length mtrx.rows - 1 do
row_iterj i (fun j -> f i j) mtrx
done
end
(*
module IntElement =
struct
type t = int
let equal = ( = )
end
module IntSparseMatrix = SquareSparseMatrix.Make(IntElement)
open IntSparseMatrix;;
let m = make 10 0;;
row_iter 0 (fun elt -> print_int elt; print_newline ()) m;;
row_iterj 0 (fun j elt -> print_int j; print_string " -> ";print_int elt; print_newline ()) m;;
row_iterj 1 (fun j elt -> set m 1 j j) m;;
swap_rows m 0 1;;
row_iterj 0 (fun j elt -> print_int j; print_string " -> ";print_int elt; print_newline ()) m;;
iterij (fun i j elt -> print_int i; print_string ", "; print_int j; print_string " -> ";print_int elt; print_newline ()) m;;
let m = init 10 0 (fun i j -> i * 10 + j);;
iterij (fun i j elt -> print_int i; print_string ", "; print_int j; print_string " -> ";print_int elt; print_newline ()) m;;
*)
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