IFP creates fatal error in all run modes except eigenvalue. (#3681)

GuySten · web-flow · commit 1b5033dab4e9 · 2025-12-12T00:21:46.000-06:00
diff --git a/src/tallies/tally.cpp b/src/tallies/tally.cpp
@@ -215,7 +215,7 @@ Tally::Tally(pugi::xml_node node)
                       "number of inactive cycles.");
         }
         settings::ifp_on = true;
-      } else {
+      } else if (settings::run_mode == RunMode::FIXED_SOURCE) {
         fatal_error(
           "Iterated Fission Probability can only be used in an eigenvalue "
           "calculation.");

Original file line number	Diff line number	Diff line change
`@@ -215,7 +215,7 @@ Tally::Tally(pugi::xml_node node)`
`215`	`215`	`"number of inactive cycles.");`
`216`	`216`	`}`
`217`	`217`	`settings::ifp_on = true;`
`218`		`- } else {`
	`218`	`+ } else if (settings::run_mode == RunMode::FIXED_SOURCE) {`
`219`	`219`	`fatal_error(`
`220`	`220`	`"Iterated Fission Probability can only be used in an eigenvalue "`
`221`	`221`	`"calculation.");`