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: randlap.m
    path of file: ./repos/fieldtrip/external/dss
    
    the code of the file until where you have to start completion: function X = randlap(n,N); 
% RANDLAP  Laplace distributed random numbers.
%   s = RANDLAP(n, M)
%     n  dimension
%     N  sample size

% Copyright (C) 2004, 2005 DSS MATLAB package team (dss@cis.hut.fi).
% Distributed by Laboratory of Computer and Information Science,
% Helsinki University of Technology. http://www.cis.hut.fi/projects/dss/.
% $Id$

X0=log(rand(n,N)).*((rand(n,N)<.5)*2-1);

    
function X = randlap(n,N); 
% RANDLAP  Laplace distributed random numbers.
%   s = RANDLAP(n, M)
%     n  dimension
%     N  sample size

% Copyright (C) 2004, 2005 DSS MATLAB package team (dss@cis.hut.fi).
% Distributed by Laboratory of Computer and Information Science,
% Helsinki University of Technology. http://www.cis.hut.fi/projects/dss/.
% $Id$

X0=log(rand(n,N)).*((rand(n,N)<.5)*2-1);
for t=1:n
  X0(t,:) = X0(t,:) - mean(X0(t,:));
  X(t,:)=X0(t,:)/std(X0(t,:),1);
end