Fix writing of homotopy csv-file for matrix elements

Belonging to [master]:
  - #1998

Author: ptaeuber

SimulationRuntime/c/simulation/solver/initialization/initialization.c

@@ -234,14 +234,15 @@ static int symbolic_initialization(DATA *data, threadData_t *threadData)
     char buffer[4096];
 
 #if !defined(OMC_NO_FILESYSTEM)
+    const char sep[] = ",";
     if(ACTIVE_STREAM(LOG_INIT))
     {
       sprintf(buffer, "%s_global_homotopy.csv", mData->modelFilePrefix);
       infoStreamPrint(LOG_INIT, 0, "The homotopy path will be exported to %s.", buffer);
       pFile = fopen(buffer, "wt");
-      fprintf(pFile, "\"sep=,\"\n%s", "lambda");
+      fprintf(pFile, "\"sep=%s\"\n%s", sep, "\"lambda\"");
       for(i=0; i<mData->nVariablesReal; ++i)
-        fprintf(pFile, ",%s", mData->realVarsData[i].info.name);
+        fprintf(pFile, "%s\"%s\"", sep, mData->realVarsData[i].info.name);
       fprintf(pFile, "\n");
     }
 #endif
@@ -268,7 +269,7 @@ static int symbolic_initialization(DATA *data, threadData_t *threadData)
       {
         fprintf(pFile, "%.16g", data->simulationInfo->lambda);
         for(i=0; i<mData->nVariablesReal; ++i)
-          fprintf(pFile, ",%.16g", data->localData[0]->realVars[i]);
+          fprintf(pFile, "%s%.16g", sep, data->localData[0]->realVars[i]);
         fprintf(pFile, "\n");
       }
 #endif

SimulationRuntime/c/simulation/solver/nonlinearSolverHomotopy.c

@@ -1610,19 +1610,19 @@ static int homotopyAlgorithm(DATA_HOMOTOPY* solverData, double *x)
   char buffer[4096];
 
 #if !defined(OMC_NO_FILESYSTEM)
+    const char sep[] = ",";
     if(solverData->initHomotopy && ACTIVE_STREAM(LOG_INIT))
     {
       sprintf(buffer, "%s_syst%d_new_global_homotopy_%s.csv", solverData->data->modelData->modelFilePrefix, solverData->sysNumber, solverData->startDirection > 0 ? "pos" : "neg");
       infoStreamPrint(LOG_INIT, 0, "The homotopy path will be exported to %s.", buffer);
       pFile = fopen(buffer, "wt");
-      fprintf(pFile, "\"sep=,\"\n");
-      fprintf(pFile, "%s", modelInfoGetEquation(&solverData->data->modelData->modelDataXml,solverData->eqSystemNumber).vars[n]);
+      fprintf(pFile, "\"sep=%s\"\n%s", sep, "\"lambda\"");
       for(i=0; i<n; ++i)
-        fprintf(pFile, ",%s", modelInfoGetEquation(&solverData->data->modelData->modelDataXml,solverData->eqSystemNumber).vars[i]);
+        fprintf(pFile, "%s\"%s\"", sep, modelInfoGetEquation(&solverData->data->modelData->modelDataXml,solverData->eqSystemNumber).vars[i]);
       fprintf(pFile, "\n");
       fprintf(pFile, "0.0");
       for(i=0; i<n; ++i)
-        fprintf(pFile, ",%.16g", x[i]);
+        fprintf(pFile, "%s%.16g", sep, x[i]);
       fprintf(pFile, "\n");
     }
 #endif
@@ -1919,12 +1919,14 @@ static int homotopyAlgorithm(DATA_HOMOTOPY* solverData, double *x)
       {
         fprintf(pFile, "%.16g", solverData->y0[n]);
         for(i=0; i<n; ++i)
-          fprintf(pFile, ",%.16g", solverData->y0[i]);
+          fprintf(pFile, "%s%.16g", sep, solverData->y0[i]);
         fprintf(pFile, "\n");
       }
 #endif
     }
   }
+  if (solverData->initHomotopy)
+      infoStreamPrint(LOG_INIT, 0, "homotopy parameter lambda = %g", solverData->y0[solverData->n]);
   /* copy solution back to vector x */
   vecCopy(solverData->n, solverData->y1, x);
 

SimulationRuntime/c/simulation/solver/nonlinearSystem.c

@@ -861,14 +861,15 @@ int solve_nonlinear_system(DATA *data, threadData_t *threadData, int sysNumber)
       warningStreamPrint(LOG_ASSERT, 0, "Failed to solve initial system %d without homotopy method. The homotopy method is used now.", sysNumber);
     }
 #if !defined(OMC_NO_FILESYSTEM)
+    const char sep[] = ",";
     if(ACTIVE_STREAM(LOG_INIT))
     {
       sprintf(buffer, "%s_homotopy_nls_%d.csv", data->modelData->modelFilePrefix, sysNumber);
       infoStreamPrint(LOG_INIT, 0, "The homotopy path of system %d will be exported to %s.", sysNumber, buffer);
       pFile = fopen(buffer, "wt");
-      fprintf(pFile, "\"sep=,\"\n%s", "lambda");
+      fprintf(pFile, "\"sep=%s\"\n%s", sep, "\"lambda\"");
       for(j=0; j<nonlinsys->size; ++j)
-        fprintf(pFile, ",%s", modelInfoGetEquation(&data->modelData->modelDataXml, nonlinsys->equationIndex).vars[j]);
+        fprintf(pFile, "%s\"%s\"", sep, modelInfoGetEquation(&data->modelData->modelDataXml, nonlinsys->equationIndex).vars[j]);
       fprintf(pFile, "\n");
     }
 #endif
@@ -891,7 +892,7 @@ int solve_nonlinear_system(DATA *data, threadData_t *threadData, int sysNumber)
         infoStreamPrint(LOG_INIT, 0, "[system %d] homotopy parameter lambda = %g done\n---------------------------", sysNumber, data->simulationInfo->lambda);
         fprintf(pFile, "%.16g", data->simulationInfo->lambda);
         for(j=0; j<nonlinsys->size; ++j)
-          fprintf(pFile, ",%.16g", nonlinsys->nlsx[j]);
+          fprintf(pFile, "%s%.16g", sep, nonlinsys->nlsx[j]);
         fprintf(pFile, "\n");
       }
 #endif