More doku.

[[Imported from SVN: r992]]

istl/superlu.hh

@@ -105,13 +105,16 @@ namespace Dune
 
     void setVerbosity(bool v);
 
+    /**
+     * @brief free allocated space.
+     * @warn later calling apply will result in an error.
+     */
+    void free();
   private:
     friend class std::mem_fun_ref_t<void,SuperLU>;
     template<class M,class X, class TM, class T1>
     friend class SeqOverlappingSchwarz;
 
-    /** @brief free allocated space. */
-    void free();
     /** @brief computes the LU Decomposition */
     void decompose();
 
@@ -153,6 +156,7 @@ namespace Dune
       SUPERLU_FREE(B.Store);
       SUPERLU_FREE(X.Store);
     }
+    mat.free();
   }
 
   template<typename T, typename A, int n, int m>

istl/supermatrix.hh

@@ -66,7 +66,7 @@ namespace Dune
   class SeqOverlappingSchwarz;
 
   /**
-   * @brief Coverte for BCRSMatrix to SuperLU Matrix.
+   * @brief Coverter for BCRSMatrix to SuperLU Matrix.
    */
   template<class B, class TA, int n, int m>
   class SuperLUMatrix<BCRSMatrix<FieldMatrix<B,n,m>,TA> >
@@ -127,11 +127,11 @@ namespace Dune
 
     SuperLUMatrix& operator=(const SuperLUMatrix& mat);
 
+    /** @brief free allocated space. */
+    void free();
   private:
     /** @brief Initialize data from given matrix. */
     void setMatrix(const Matrix& mat);
-    /** @brief free allocated space. */
-    void free();
 
     int N_, M_, Nnz_;
     B* values;
@@ -461,6 +461,7 @@ namespace Dune
     delete[] rowindex;
     delete[] colstart;
     SUPERLU_FREE(A.Store);
+    N_=M_=Nnz_=0;
   }
 
 }