[Num] Added a member to ConvergenceCriterion

NumLib/ODESolver/ConvergenceCriterion.h

@@ -60,6 +60,10 @@ public:
     //! (while solving a specific nonlinear system).
     virtual void preFirstIteration() {}
 
+    //! Tell the ConvergenceCriterion that it is not called for the first time
+    //! (while solving a coupling system).
+    virtual void setNoFirstIteration() {}
+
     //! Indicate that a new iteration now starts.
     //!
     //! A concrete implementation of ConvergenceCriterion might want to check

NumLib/ODESolver/ConvergenceCriterionResidual.h

@@ -39,6 +39,7 @@ public:
     void checkResidual(const GlobalVector& residual) override;
 
     void preFirstIteration() override { _is_first_iteration = true; }
+    void setNoFirstIteration() override { _is_first_iteration = false; }
     void reset() override { _satisfied = true; _is_first_iteration = false; }
     bool isSatisfied() const override { return _satisfied; }
 private: