chore: rename function to make it readable

Author: stevenhua0320

news/deprecate-symmetryutilities-4.rst

@@ -5,7 +5,7 @@
 * Added ``_find_pos_parameters`` method in ``GeneratorSite`` class
 * Added ``_find_u_space`` method in ``GeneratorSite`` class
 * Added ``_find_u_parameters`` method in ``GeneratorSite`` class
-* Added ``_find_equij`` method in ``GeneratorSite`` class
+* Added ``_find_eq_uij`` method in ``GeneratorSite`` class
 
 **Changed:**
 

src/diffpy/structure/symmetryutilities.py

@@ -605,7 +605,7 @@ def __init__(
         self._find_pos_parameters()
         self._find_u_space()
         self._find_u_parameters()
-        self._find_equij()
+        self._find_eq_uij()
         return
 
     def convert_fp_num_to_signed_rational(self, x):
@@ -743,7 +743,7 @@ def _find_u_parameters(self):
             self.Uparameters.append((vname, varvalue))
         return
 
-    def _find_equij(self):
+    def _find_eq_uij(self):
         """Adjust `self.Uij` and `self.eqUij` to be consistent with
         spacegroup."""
         self.Uij = numpy.zeros((3, 3), dtype=float)