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function f=comp_idgtreal_long(coef,g,L,a,M)
%COMP_IDGTREAL_FAC Full-window factorization of a Gabor matrix assuming.
% Usage: f=comp_idgtreal_long(c,g,L,a,M)
%
% Input parameters:
% c : M x N x W array of coefficients.
% g : window (from facgabm).
% a : Length of time shift.
% M : Number of frequency shifts.
% Output parameters:
% f : Reconstructed signal.
%
% Do not call this function directly, use IDGT.
% This function does not check input parameters!
%
% If input is a matrix, the transformation is applied to
% each column.
%
% This function does not handle multidimensional data, take care before
% you call it.
%
% References: so07-2 st98-8
% AUTHOR : Peter L. Søndergaard.
% TESTING: OK
% REFERENCE: OK
% Get the factorization of the window.
gf = comp_wfac(g,a,M);
% Call the computational subroutine.
f = comp_idgtreal_fac(coef,gf,L,a,M);