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: cat_io_lazy.m
    path of file: ./repos/ExploreASL/External/SPMmodified/toolbox/cat12
    
    the code of the file until where you have to start completion: function run = cat_io_rerun(files,filedates)
%cat_io_lazy. Test if a file is newer than another file.  
% This function is used to estimated if a file is newer than another given 
% file or date. For instance file is the result of anther file that was 
% changed in the meantime, it has to be reprocessed. 
%
%  run = cat_io_lazy(files,filedates)
% 
%  run      .. logical vector with the number of given files
%              cell if directories or wildcards are used
%  files    .. filenames (cellstr or char)
%  filedat  .. filenames (cellstr or char) or datetimes or datenum
%
% Examples: 
%  1) Is the working directory younger than the SPM dir?
%     cat_io_lazy(pwd,spm('dir'); 
%
%  2) Is the working directory younger than one month?
%     cat_io_lazy(pwd,clock - [0 1 0 0 0 0]) 
%   
%  3) Is this function younger than one year?
%     cat_io_lazy(which('cat_io_lazy'),clock - [1 0 0 0 0 0]) 
%
% _________________________________________________________________________
% Robert Dahnke
% $Id: cat_io_lazy.m 1579 2020-03-10 13:51:42Z gaser $

  files = cellstr(files);
  if iscellstr(filedates) || ischar(filedates)
    filedates = cellstr(filedates);
    if numel(filedates) == 1
      filedates = repmat(filedates,numel(files),1);

    
function run = cat_io_rerun(files,filedates)
%cat_io_lazy. Test if a file is newer than another file.  
% This function is used to estimated if a file is newer than another given 
% file or date. For instance file is the result of anther file that was 
% changed in the meantime, it has to be reprocessed. 
%
%  run = cat_io_lazy(files,filedates)
% 
%  run      .. logical vector with the number of given files
%              cell if directories or wildcards are used
%  files    .. filenames (cellstr or char)
%  filedat  .. filenames (cellstr or char) or datetimes or datenum
%
% Examples: 
%  1) Is the working directory younger than the SPM dir?
%     cat_io_lazy(pwd,spm('dir'); 
%
%  2) Is the working directory younger than one month?
%     cat_io_lazy(pwd,clock - [0 1 0 0 0 0]) 
%   
%  3) Is this function younger than one year?
%     cat_io_lazy(which('cat_io_lazy'),clock - [1 0 0 0 0 0]) 
%
% _________________________________________________________________________
% Robert Dahnke
% $Id: cat_io_lazy.m 1579 2020-03-10 13:51:42Z gaser $

  files = cellstr(files);
  if iscellstr(filedates) || ischar(filedates)
    filedates = cellstr(filedates);
    if numel(filedates) == 1
      filedates = repmat(filedates,numel(files),1);
    else
      if ~isempty(filedates) && numel(files) ~= numel(filedates)
        error('ERROR:cat_io_lazy:inputsize','Number of files and filedates has to be equal.\n')
      end