added new linear solver based on LU decomposision using total pivoting

 - activated it also as default
 - updated some tests



git-svn-id: https://openmodelica.org/svn/OpenModelica/trunk@23167 f25d12d1-65f4-0310-ae8a-bbce733d8d8e

Author: Bernhard Bachmann

SimulationRuntime/c/simulation/simulation_runtime.cpp

@@ -271,16 +271,20 @@ int getlinearSolverMethod(int argc, char**argv)
   const string *method = cflags ? new string(cflags) : NULL;
 
   if(!method)
-    return LS_LAPACK; /* default method */
+    return LS_TOTALPIVOT; /* default method */
 
   if(*method == string("lapack"))
     return LS_LAPACK;
 
+  if(*method == string("totalpivot"))
+    return LS_TOTALPIVOT;
+
   if(*method == string("lis"))
     return LS_LIS;
 
   warningStreamPrint(LOG_STDOUT, 1, "unrecognized option -ls %s, current options are:", method->c_str());
-  warningStreamPrint(LOG_STDOUT, 0, "%-18s [%s]", "lapack", "default method");
+  warningStreamPrint(LOG_STDOUT, 0, "%-18s [%s]", "lapack", "method using lapack LU factorization");
+  warningStreamPrint(LOG_STDOUT, 0, "%-18s [%s]", "totalpivot", "default method - using total pivoting LU factorization");
   warningStreamPrint(LOG_STDOUT, 0, "%-18s [%s]", "lis", "Lis");
   messageClose(LOG_STDOUT);
   throwStreamPrint(NULL,"see last warning");
@@ -307,9 +311,9 @@ int getNewtonStrategy(int argc, char**argv)
   throwStreamPrint(NULL,"see last warning");
 
   return NEWTON_NONE;
-
 }
 
+
 /**
  * Signals the type of the simulation
  * retuns true for interactive and false for non-interactive