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%-*- texinfo -*-
%@deftypefn {Function} test_wfac
%@verbatim
%TEST_WFAC Test COMP_WFAC
%
% This script runs a test of only the comp_wfac and comp_iwfac procedures.
%
% The script TEST_DGT will test the complete DGT implementation.
%@end verbatim
%@strong{Url}: @url{http://ltfat.github.io/doc/testing/test_wfac.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=[24,16,144,108,144,24,135,35,77,20];
ar=[ 4, 4, 9, 9, 12, 6, 9, 5, 7, 1];
Mr=[ 6, 8, 16, 12, 24, 8, 9, 7,11,20];
test_failed=0;
which comp_wfac
which comp_iwfac
for ii=1:length(Lr);
for R=1:3
L=Lr(ii);
M=Mr(ii);
a=ar(ii);
b=L/M;
N=L/a;
c=gcd(a,M);
d=gcd(b,N);
p=a/c;
q=M/c;
g=tester_crand(L,R);
gf1=comp_wfac(g,a,M);
gf2=ref_wfac(g,a,M);
cdiff=gf1-gf2;
res=norm(cdiff(:));
if res>10e-10
disp('FAILED WFAC');
test_failed=test_failed+1;
end;
s=sprintf('WFAC L:%3i R:%2i a:%3i b:%3i c:%3i d:%3i p:%3i q:%3i %0.5g',L,R,a,b,c,d,p,q,res);
disp(s)
gf=tester_crand(p*q*R,c*d);
g1=comp_iwfac(gf,L,a,M);
g2=ref_iwfac(gf,L,a,M);
cdiff=g1-g2;
res=norm(cdiff(:));
if res>10e-10
disp('FAILED IWFAC');
test_failed=test_failed+1;
end;
s=sprintf('IWFAC L:%3i R:%2i a:%3i b:%3i c:%3i d:%3i p:%3i q:%3i %0.5g',L,R,a,b,c,d,p,q,res);
disp(s)
end;
end;
test_failed
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