reverted material to outputting full atomic amount to xml file

openmc/material.py

@@ -587,9 +587,9 @@ class Material(object):
 
         if not distrib:
             if nuclide[2] == 'ao':
-                xml_element.set("ao", '{0:.12f}'.format(nuclide[1]))
+                xml_element.set("ao", str(nuclide[1]))
             else:
-                xml_element.set("wo", '{0:.12f}'.format(nuclide[1]))
+                xml_element.set("wo", str(nuclide[1]))
 
         if not nuclide[0].scattering is None:
             xml_element.set("scattering", nuclide[0].scattering)

tests/test_triso/inputs_true.dat

@@ -1 +1 @@
-790bb9e31e72798b9407e5daba696fa35f7240feb59a99c081b96afdd5120aa9afe45b791e3293e01ae699512567feaeb7c4a77a592f781bd70a7900c9e28eae
+5859cd73807c74cce612275817d3e1c6a2b55a347b31925115dbda2d83df60345ea4617cbc3b057a2fcfef4242f0e53d66d569ecffaeed35975ca28307b354c4

tests/test_triso/results_true.dat

@@ -1,2 +1,2 @@
 k-combined:
-1.572877E+00 1.337067E-02
+1.643727E+00 5.233644E-02