PASS - fft{(4,0), (0,0), (0,0), (0,-0)} =?= {(4,0), (0,0), (0,0), (0,-0)} {(0,0), (0,0), (0,0), (0,0)}

PASS - fft{(8,0), (0,0), (0,0), (0,-0)} =?= {(8,0), (0,0), (0,0), (0,-0)} {(0,0), (0,0), (0,0), (0,0)}

PASS - fft{(12,0), (0,0), (0,0), (0,-0)} =?= {(12,0), (0,0), (0,0), (0,-0)} {(0,0), (0,0), (0,0), (0,0)}

PASS - fft{(16,0), (0,0), (0,0), (0,-0)} =?= {(16,0), (0,0), (0,0), (0,-0)} {(0,0), (0,0), (0,0), (0,0)}