done bug fixes in interface_impl and sdc_impl

Author: selmanTerzi

src/pfasst/controller/interface_impl.hpp

@@ -85,7 +85,7 @@ namespace pfasst
   template<typename time>
   void Controller<time>::set_step(size_t n)
   {
-    t += (n - step) * dt;
+    t += ((int)n - (int)step) * dt;
     step = n;
   }
 

src/pfasst/controller/sdc_impl.hpp

@@ -7,7 +7,7 @@ namespace pfasst
   void SDC<time>::run()
   {
     auto sweeper = this->get_level(0);
-
+    
     for (; this->get_time() < this->get_end_time(); this->advance_time()) {
       bool initial = this->get_step() == 0;
       for (this->set_iteration(0);
@@ -26,7 +26,7 @@ namespace pfasst
         }
       }
       sweeper->post_step();
-      sweeper->advance();
+      if(this->get_time() + this->get_time_step() < this->get_end_time()) sweeper->advance();
     }
   }
 }  // ::pfasst