function A = circulant(x)

function A = circulant(x)



return square circulant matrix with first row x

barnett 2/5/08



x = x(:)

A = toeplitz([x(1) x(end:-1:2)], x) -function A = circulant(x)

　function A = circulant(x)



　return square circulant matrix with first row x

　barnett 2/5/08



x = x(:)

A = toeplitz([x(1)　x(end:-1:2)], x)