function [U, V] = dwt(X, varargin)
funcprot(0);
rhs = argn(2)
if(rhs<2 | rhs>4)
error("Wrong number of input arguments.");
end
select(rhs)
case 2 then
[U, V] = callOctave("dwt", X, varargin(1));
case 3 then
[U, V] = callOctave("dwt", X, varargin(1), varargin(2));
case 4 then
[U, V] = callOctave("dwt", X, varargin(1), varargin(2), varargin(3));
end
endfunction