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function cout=ref_col2diag(cin);
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%@deftypefn {Function} ref_col2diag
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%REF_COL2DIAG Compute matrix represenation from spreading symbol
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% This function is its own inverse.
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%@strong{Url}: @url{http://ltfat.sourceforge.net/doc/reference/ref_col2diag.php}
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% Copyright (C) 2005-2014 Peter L. Soendergaard <soender@users.sourceforge.net>.
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% This file is part of LTFAT version 2.0.1
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% This program is free software: you can redistribute it and/or modify
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% it under the terms of the GNU General Public License as published by
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% the Free Software Foundation, either version 3 of the License, or
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% (at your option) any later version.
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% This program is distributed in the hope that it will be useful,
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% but WITHOUT ANY WARRANTY; without even the implied warranty of
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% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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% GNU General Public License for more details.
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% You should have received a copy of the GNU General Public License
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% along with this program. If not, see <http://www.gnu.org/licenses/>.
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cout(ii+1,jj+1)=cin(ii+1,mod(ii-jj,L)+1);