The auto-correlation functions accept the Natural, Hamilton, Landy-Szalay and Davis-Peebles estimators, while the cross-correlation functions only accept the Davis-Peebles estimator.
We also need to consider that the projected correlation estimator routines in Fortran are suffixed with "_wrp": tpcf is used for non-projected auto-correlations, tpcf_wrp is used for projected auto-correlations, tpccf is used for non-projected cross-correlations, tpccf_wrp is used for projected cross-correlations).
The auto-correlation functions accept the Natural, Hamilton, Landy-Szalay and Davis-Peebles estimators, while the cross-correlation functions only accept the Davis-Peebles estimator.
We also need to consider that the projected correlation estimator routines in Fortran are suffixed with "_wrp":
tpcfis used for non-projected auto-correlations,tpcf_wrpis used for projected auto-correlations,tpccfis used for non-projected cross-correlations,tpccf_wrpis used for projected cross-correlations).