- minor changes to some comments

git-svn-id: https://openmodelica.org/svn/OpenModelica/trunk@25491 f25d12d1-65f4-0310-ae8a-bbce733d8d8e
OpenModelica · Apr 10, 2015 · d9e3df5 · d9e3df5
1 parent 08bd5e0
commit d9e3df5
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Showing 2 changed files with 6 additions and 5 deletions.
diff --git a/Compiler/BackEnd/Initialization.mo b/Compiler/BackEnd/Initialization.mo
@@ -1358,10 +1358,10 @@ algorithm
   if not perfectMatching then
     Error.addCompilerNotification("The given system is mixed-determined.   [index > " + intString(inIndex) + "]");
     //BackendDump.dumpEqSystem(syst, "The given system is mixed-determined.   [index > " + intString(inIndex) + "]");
+    fail();
   end if;
-  true := perfectMatching; // if this fails, the system is singular (mixed-determined)
 
-  // map to equations
+  // map artificial variables to redundant equations
   range := if nAddVars > 0 then List.intRange2(nVars+1, nVars+nAddVars) else {};
   redundantEqns := mapIndices(range, vec1);
 //print("{" + stringDelimitList(List.map(redundantEqns, intString),",") + "}\n");
@@ -1370,13 +1370,13 @@ algorithm
   (me, _, _, _) := BackendDAEUtil.getAdjacencyMatrixEnhancedScalar(syst, inShared);
   (_, _, _) := consistencyCheck(redundantEqns, inEqns, inVars, inShared, nAddVars, m_, me, vec1, vec2, mapIncRowEqn);
 
-  // remove all unassigned equations
+  // remove redundant equations
   outRemovedEqns := BackendEquation.getEqns(redundantEqns, inEqns);
 //BackendDump.dumpEquationList(outRemovedEqns, "removed equations");
   outEqns := BackendEquation.equationDelete(inEqns, redundantEqns);
 //BackendDump.dumpEquationArray(outEqns, "remaining equations");
 
-  // map to variables
+  // map artificial equations to unfixed states
   range := if nAddEqs > 0 then List.intRange2(nEqns+1, nEqns+nAddEqs) else {};
   range := mapIndices(range, vec2);
 //print("{" + stringDelimitList(List.map(range, intString),",") + "}\n");

diff --git a/Compiler/BackEnd/Matching.mo b/Compiler/BackEnd/Matching.mo
@@ -89,7 +89,8 @@ algorithm
 end PerfectMatching;
 
 public function RegularMatching "
-  This function returns at least a partial matching for singular systems."
+  This function returns at least a partial matching for singular systems.
+  Unmatched nodes are represented by -1."
   input BackendDAE.IncidenceMatrix m;
   input Integer nVars;
   input Integer nEqns;