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function test_variance()
d0 = 0.2113249
d2 = [0.2113249 0.0002211 0.6653811;0.7560439 0.4453586 0.6283918]
z0 = d0 + %i * d0
z2 = d2 + %i * d2
//disp(variance(d0))
//disp(variance(z0))
disp(variance(d2))
disp(variance(z2))
//disp(variance(d0, 1))
//disp(variance(z0, 1))
disp(variance(d2, 1))
disp(variance(z2, 1))
//disp(variance(d0, 2))
//disp(variance(z0, 2))
disp(variance(d2, 2))
disp(variance(z2, 2))
// disp(variance(d0, 'r'))
// disp(variance(z0, 'r'))
// disp(variance(d2, 'r'))
// disp(variance(z2, 'r'))
// disp(variance(d0, 'c'))
// disp(variance(z0, 'c'))
// disp(variance(d2, 'c'))
// disp(variance(z2, 'c'))
endfunction
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