Add methods to check the status of the verbosity mode

dune/solvers/common/numproc.hh

@@ -38,6 +38,15 @@ class SolverError : public Dune::Exception {};
         /** \brief Get the verbosity level */
         const VerbosityMode& getVerbosity() const  {return verbosity_;}
 
+        /** \brief Check if verbosity is quiet. */
+        bool isQuiet() const { return verbosity_ == QUIET; }
+
+        /** \brief Check if verbosity is reduced. */
+        bool isReduced() const { return verbosity_ == REDUCED; }
+
+        /** \brief Check if verbosity is full. */
+        bool isFull() const { return verbosity_ == FULL; }
+
     protected:
         /** \brief Controls the amount of screen output of a numproc */
         VerbosityMode verbosity_;