clx_stat                Cai-Liu-Xia max-type covariance statistic (C
                        back-end)
clx_test                Max-type two-sample covariance test with the
                        extreme-value calibration
cov_M                   Box's M statistic for equality of two
                        covariance matrices (C back-end)
cov_logdiff             Log-domain differential network (C back-end)
cov_null                Draws from the covariance-free null of M (C
                        back-end)
cov_pdet                Exact null of the determinant functional, and
                        exact power against proportional alternatives
cov_pexact              Exact right-tail probability of Box's M (C
                        back-end)
cov_test                Exact test for a change in covariance structure
diffnet_test            Two-sample test for a change in dependence
                        structure via the log-domain contrast
