| dataset_bb | Integrals of Squared Brownian Bridge |
| dataset_bm | Integrals of Squared Brownian Motion |
| dataset_dbb | Integrals of Squared De-meaned Brownian Bridge |
| dataset_sbb | Integrals of Squared Second-level Brownian Bridge |
| default_kernel | Default Kernel Function |
| est_eigenvalue | Eigenvalues of An Estimated Long-run Covariance Function |
| fkpsst | Functional KPSS Test |
| FKPSS_teststat | Test Statistic in Functional KPSS Test |
| fst | Functional Stationarity Test |
| FST_teststat_MN | Test Statistic M_N in Functional Stationarity Test |
| FST_teststat_TN | Test Statistic T_N in Functional Stationarity Test |
| furt | Functional Unit Root Test |
| partial_sum | Partial Sum |