function res = cov2corr(C)
	n = size(C,2);
	res = zeros(n,n);
	for i=1:n
		for j=1:n
			res(i,j) = C(i,j) / sqrt(C(i,i) * C(j,j));
			res(j,i) = res(i,j);
		end
	end
	
	for i=1:n
		res(i,i) = sqrt(C(i,i));
	end