You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: adim.m
    path of file: ./repos/malini/Codes/FC_EC_calculation code/DynamicEC/tsa
    
    the code of the file until where you have to start completion: function [IR, CC, D] = adim(U, UC, IR, CC, arg5); 
% ADIM adaptive information matrix. Estimates the inverse

    
function [IR, CC, D] = adim(U, UC, IR, CC, arg5); 
% ADIM adaptive information matrix. Estimates the inverse
%   correlation matrix in an adaptive way. 
%
% [IR, CC] = adim(U, UC [, IR0 [, CC0]]); 
%   U 	input data  
%   UC 	update coefficient 0 < UC << 1
%   IR0	initial information matrix
%   CC0 initial correlation matrix
%   IR	information matrix (inverse correlation matrix)
%   CC  correlation matrix
% 	
%  The algorithm uses the Matrix Inversion Lemma, also known as 
%     "Woodbury's identity", to obtain a recursive algorithm.  
%     IR*CC - UC*I should be approx. zero. 
%
% Reference(s):
% [1] S. Haykin. Adaptive Filter Theory, Prentice Hall, Upper Saddle River, NJ, USA 
%     pp. 565-567, Equ. (13.16), 1996.


%       $Id: adim.m 5090 2008-06-05 08:12:04Z schloegl $
%       Copyright (C) 1998-2003 by Alois Schloegl <a.schloegl@ieee.org>
%
%    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 3 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, see <http://www.gnu.org/licenses/>.



[ur,p] = size(U);

Mode_E = 0;
%if nargin < 4,
%        m  = zeros(size(U)+[0,Mode_E]);
%end