Cointegration.Engle_grangertype result = {beta : float;intercept : float;residuals : float array;residual_adf : Adf.result;cointegrated : bool;}val test :
y:float array ->
x:float array ->
?signif:float ->
?adf_variant:Adf.variant ->
?adf_lag:int ->
unit ->
(result, error) Stdlib.result