initialize FieldMatrix explicitly

[[Imported from SVN: r1031]]

istl/paamg/test/anisotropic.hh

@@ -79,7 +79,7 @@ template<class M>
 void fillValues(int N, M& mat, int overlapStart, int overlapEnd, int start, int end, double eps)
 {
   typedef typename M::block_type Block;
-  Block dval = 0, bone=0, bmone=0, beps=0;
+  Block dval(0), bone(0), bmone(0), beps(0);
 
   for(typename Block::RowIterator b = dval.begin(); b !=  dval.end(); ++b)
     b->operator[](b.index())=2.0+2.0*eps;

istl/test/laplacian.hh

@@ -43,8 +43,8 @@ void setupLaplacian(Dune::BCRSMatrix<B>& A, int N)
 
   setupSparsityPattern(A,N);
 
-  B diagonal = static_cast<FieldType>(0), bone=static_cast<FieldType>(0),
-    beps=static_cast<FieldType>(0);
+  B diagonal(static_cast<FieldType>(0)), bone(static_cast<FieldType>(0)),
+  beps(static_cast<FieldType>(0));
   for(typename B::RowIterator b = diagonal.begin(); b !=  diagonal.end(); ++b)
     b->operator[](b.index())=4;
 

istl/tutorial/example.cc

@@ -359,13 +359,13 @@ void test_Iter ()
   t.start();
 
   // build little blocks
-  MB D=0;
+  MB D(0.0);
   for (int i=0; i<BlockSize; i++)
     for (int j=0; j<BlockSize; j++)
       if (i==j) D[i][j] = 4+(BlockSize-1);else D[i][j] = -1;
   //   printmatrix(std::cout,D,"diagonal block","row",10,2);
 
-  MB E=0;
+  MB E(0.0);
   for (int i=0; i<BlockSize; i++)
     E[i][i] = -1;
   //   printmatrix(std::cout,E,"offdiagonal block","row",10,2);