CCDF                    Function to compute (un)conditional cumulative
                        distribution function (CDF), used by plot_CCDF
                        function.
ccdf_testing            Main function to perform complex hypothesis
                        testing using (un)conditional independence test
perm_cont               Permutation procedure when Z is continuous
plot_CCDF               Function to plot the CCDF according to the type
                        of X et Z
plot_pvals              Plot of gene-wise p-values
test_asymp              Asymptotic test
test_perm               Permutation test
