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: spm_nfm_mtf.m
    path of file: ./repos/malini/Codes/deconvolution - model/spm8/toolbox/dcm_meeg
    
    the code of the file until where you have to start completion: function [y,w] = spm_nfm_mtf(P,M,U)
% Spectral response of a NFM (transfer function x noise spectrum)

    
function [y,w] = spm_nfm_mtf(P,M,U)
% Spectral response of a NFM (transfer function x noise spectrum)
% FORMAT [y,w] = spm_nfm_mtf(P,M,U)
%
% P - parameters
% M - neural mass model structure
% U - trial-specific effects
%
% G - {G(N,nc,nc}} - cross-spectral density for nc channels {trials}
%                  - for N frequencies in M.Hz [default 1:64Hz]
% w - frequencies
%
%__________________________________________________________________________
% Copyright (C) 2008 Wellcome Trust Centre for Neuroimaging
 
% Dimitris Pinotsis, Karl Friston
% $Id: spm_nfm_mtf.m 4305 2011-04-12 18:15:32Z karl $
 
 
% compute log-spectral density
%==========================================================================
 
% frequencies of interest
%--------------------------------------------------------------------------
try
    dt = 1/(2*round(M.Hz(end