Cycle Reduction

solve_policy_function_with_cycle_reduction(A, ...)	Solve quadratic matrix equation of the form $A0x^2 + A1x + A2 = 0$ via cycle reduction algorithm of [1].
cycle_reduction_pt(A, B, C, D[, max_iter, tol])
scan_cycle_reduction(A, B, C, D[, max_iter, ...])