Splits x into its even (symmetric) and odd (anti-symmetric)
components about the centre: x_even = (x + rev(x))/2,
x_odd = (x - rev(x))/2.
Splits x into its even (symmetric) and odd (anti-symmetric)
components about the centre: x_even = (x + rev(x))/2,
x_odd = (x - rev(x))/2.