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function test_failed=test_dgt_fb
%-*- texinfo -*-
%@deftypefn {Function} test_dgt_fb_alg
%@verbatim
%TEST_DGT_FB Test the filter bank algorithms in DGT
%
% This script runs a throrough test of the DGT routine,
% testing it on a range of input parameters.
%
% The script test the filter bank algorithms in DGT, IDGT, GABDUAL and
% GABTIGHT by comparing with the full window case.
%
% The computational backend is tested this way, but the
% interfaces is not.
%@end verbatim
%@strong{Url}: @url{http://ltfat.github.io/doc/testing/test_dgt_fb_alg.html}
%@end deftypefn
% Copyright (C) 2005-2016 Peter L. Soendergaard <peter@sonderport.dk>.
% This file is part of LTFAT version 2.2.0
%
% 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/>.
Lr = [24, 35, 35, 24,144,108,144,135,77,77];
ar = [ 6, 5, 5, 4, 9, 9, 12, 9, 7, 7];
Mr = [ 8, 7, 7, 6, 16, 12, 24, 9,11,11];
glr = [16, 14, 21, 12, 48, 12, 24, 18,22,11];
test_failed=0;
disp(' =============== TEST_DGT_FB_ALG ================');
disp('--- Used subroutines ---');
for ii=1:length(Lr);
L=Lr(ii);
M=Mr(ii);
a=ar(ii);
gl=glr(ii);
b=L/M;
N=L/a;
for rtype=1:2
if rtype==1
rname='REAL ';
g=tester_rand(gl,1);
else
rname='CMPLX';
g=tester_crand(gl,1);
end;
if rtype==1
rname='REAL ';
f=tester_rand(L,1);
else
rname='CMPLX';
f=tester_crand(L,1);
end;
cc = dgt(f,fir2long(g,L),a,M);
cc_ref = ref_dgt_6(f,g,a,M);
cdiff=cc-cc_ref;
res=norm(cdiff(:));
[test_failed,fail]=ltfatdiditfail(res,test_failed);
s=sprintf('REF %s L:%3i a:%3i M:%3i gl:%3i %0.5g %s',rname,L,a,M,gl,res,fail);
disp(s)
end;
end;
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