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function test_FFTShift()
disp(fftshift(5.3));// d0*d0
disp(fftshift(5.3*%i));// z0*z0
disp(fftshift(5.3 + 5.6*%i ));// z0*z0
a = fft ([10 1 15 3.5 ]);
disp(fftshift(a));
b = [ 14 15 2 6 ; 1 2 6 4 ; 48.5 3 9.3 1 ];
disp(fftshift(b));
disp(fftshift(b , 1));
disp(fftshift(b , 2));
//disp(fftshift(b , "all"));
c = [10 1 15 3.5 ]*%i;
disp(fftshift(c));
d = [ 14 15 2 6 ; 1 2 6 4 ; 48.5 3 9.3 1 ]*%i;
disp(fftshift(b));
disp(fftshift(b , 1));
disp(fftshift(b , 2));
//disp(fftshift(b , "all"));
e = c + [10 1 15 3.5 ]*%i;
disp(fftshift(e));
f = [ 18 15 7 6 ; 1 5 6 4 ; 43.5 1 9.3 1 ] + [ 14 15 2 6 ; 1 2 6 4 ; 48.5 3 9.3 1 ]*%i;
disp(fftshift(f));
disp(fftshift(f , 1));
disp(fftshift(f , 2));
//disp(fftshift(f , "all"));
endfunction
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