Some cleanup

docs/source/io_formats/statepoint.rst

@@ -108,8 +108,8 @@ The current version of the statepoint file format is 17.0.
              interpolation. Only used for 'energyfunction' filters.
            - **y** (*double[]*) -- Interpolant values for energyfunction
              interpolation. Only used for 'energyfunction' filters.
-           - **interpolation** (*int*) -- Interpolation type. One of 
-             (1 - linear-linear or 2 - log-log). Only used for 'energyfunction' 
+           - **interpolation** (*int*) -- Interpolation type. Either 
+             1 (linear-linear) or 2 (log-log). Only used for 'energyfunction' 
              filters.
 
 **/tallies/derivatives/derivative <id>/**

src/tallies/filter_energyfunc.cpp

@@ -25,7 +25,7 @@ void EnergyFunctionFilter::from_xml(pugi::xml_node node)
 
   auto y = get_node_array<double>(node, "y");
 
-  // use linear-linear interpolation by default
+  // default to linear-linear interpolation
   interpolation_ = Interpolation::lin_lin;
   if (check_for_node(node, "interpolation")) {
     std::string interpolation = get_node_value(node, "interpolation");

tests/regression_tests/filter_energyfun/test.py

@@ -41,7 +41,6 @@ def model():
 
     filt3 = openmc.EnergyFunctionFilter(x, y)
     filt3.interpolation = 'log-log'
-    print(filt3)
 
     # Make tallies
     tallies = [openmc.Tally(), openmc.Tally(), openmc.Tally()]