clusters: Use "hmf" to calculate halo mass functions/distributions

* New dependency "hmf" (halo mass functions) module
* Calculate halo mass distributions/functions (dndlnm) with respect to masses
  and redshifts, instead of use the previous data file ("ps_data")
* New section "[extragalactic][psformalism]" in configurations
* New functions to write and read the dndlnm data

TODO:
* update the method to sample (mass, redshift) for clusters from the dndlnm
  data

1 files changed, 5 insertions, 2 deletions

diff --git a/fg21sim/configs/checkers.py b/fg21sim/configs/checkers.py
index 5316eac..76c99d3 100644
--- a/fg21sim/configs/checkers.py
+++ b/fg21sim/configs/checkers.py
@@ -150,13 +150,16 @@ def check_galactic_snr(configs):
 def check_extragalactic_clusters(configs):
     """
     Check the "[extragalactic][clusters]" section of the configurations.
+    The related sections ("[extragalactic][psformalism]",
+    "[extragalactic][halos]") are also checked.
     """
     comp = "extragalactic/clusters"
     comp_enabled = configs.foregrounds[0]
     results = {}
     if comp in comp_enabled:
-        # Only validate the configs if this component is enabled
-        results.update(_check_existence(configs, comp+"/ps_data"))
+        # output dndlnm data file required
+        key = "extragalactic/psformalism/dndlnm_outfile"
+        results.update(_check_missing(configs, key))
         # catalog required when enabled to use it
         if configs.get(comp+"/use_output_catalog"):
             results.update(_check_existence(configs, comp+"/catalog_outfile"))