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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) INRIA
//
// This file must be used under the terms of the CeCILL.
// This source file is licensed as described in the file COPYING, which
// you should have received as part of this distribution. The terms
// are also available at
// http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
function x = fftshift(x,job)
if argn(2)<2 then job="all",end
deff("sel=fun(sk)","c=ceil(sk/2);sel=[c+1:sk,1:c]")
if job=="r" then job=1,elseif job=="c" then job=2,end
ind=list()
if job=="all" then
for sk=size(x),ind($+1)=fun(sk),end
else
for sk=size(x),ind($+1)=:,end;
ind(job)=fun(size(x,job))
end
x=x(ind(:))
endfunction
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