| 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_logdiff | Log-domain differential network (C back-end) |
| cov_M | Box's M statistic for equality of two covariance matrices (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_powdet | Exact null of the determinant functional, and exact power against proportional alternatives |
| 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 |