idmass uses REAL not DOUBLE PRECISION

corsika/detail/modules/epos/ParticleConversion.inl

@@ -20,7 +20,7 @@ namespace corsika::epos {
     if (sCode == 0)
       throw std::runtime_error("getEposMass: unknown particle!");
     else {
-      double mass2;
+      float mass2 = 0;
       ::epos::idmass_(sCode, mass2);
       return sqrt(mass2) * 1_GeV;
     }

modules/epos/epos.hpp

@@ -100,7 +100,7 @@ namespace epos {
   // get isospin, spin, strangeness for id
   void idspin_(int&, int&, int&, int&);
   // get mass for id
-  void idmass_(int&, double&);
+  void idmass_(int&, float&);
   // convert id from one format to another
   int idtrafo_(char[3], char[3], int&);
 

tests/modules/testEpos.cpp

@@ -70,7 +70,7 @@ TEST_CASE("Epos", "[processes]") {
   }
 
   SECTION("epos mass") {
-    CHECK_FALSE(corsika::epos::getEposMass(Code::Electron) == 0_GeV);
+    CHECK_FALSE(corsika::epos::getEposMass(Code::Electron) / 1_GeV == Approx(0));
   }
 
   /*