Switch positions of two functions

GCC reported a compiler error. transformMatrix depends on transformMatrixPattern: therefore the latter should be implemented first.

dune/matrix-vector/transformmatrix.hh

@@ -271,6 +271,23 @@ namespace MatrixVector {
         isScalar<TransformationMatrix2>()>::addTransformedMatrix(A, T1, B, T2);
   }
 
+  template <class MatrixBlockA, class TransformationMatrix1, class MatrixB,
+            class TransformationMatrix2>
+  static void transformMatrixPattern(Dune::BCRSMatrix<MatrixBlockA>& A,
+                                     const TransformationMatrix1& T1,
+                                     const MatrixB& B,
+                                     const TransformationMatrix2& T2) {
+    Dune::MatrixIndexSet indices(T1.M(), T2.M());
+    for (size_t k = 0; k < B.N(); ++k)
+      for (auto BIt = B[k].begin(); BIt != B[k].end(); ++BIt) {
+        size_t l = BIt.index();
+        for (auto T1kIt = T1[k].begin(); T1kIt != T1[k].end(); ++T1kIt)
+          for (auto T2lIt = T2[l].begin(); T2lIt != T2[l].end(); ++T2lIt)
+            indices.add(T1kIt.index(), T2lIt.index());
+      }
+    indices.exportIdx(A);
+  }
+
   template <class MatrixBlockA, class TransformationMatrix1, class MatrixB,
             class TransformationMatrix2>
   static void transformMatrix(Dune::BCRSMatrix<MatrixBlockA>& A,
@@ -289,23 +306,6 @@ namespace MatrixVector {
           }
       }
   }
-
-  template <class MatrixBlockA, class TransformationMatrix1, class MatrixB,
-            class TransformationMatrix2>
-  static void transformMatrixPattern(Dune::BCRSMatrix<MatrixBlockA>& A,
-                                     const TransformationMatrix1& T1,
-                                     const MatrixB& B,
-                                     const TransformationMatrix2& T2) {
-    Dune::MatrixIndexSet indices(T1.M(), T2.M());
-    for (size_t k = 0; k < B.N(); ++k)
-      for (auto BIt = B[k].begin(); BIt != B[k].end(); ++BIt) {
-        size_t l = BIt.index();
-        for (auto T1kIt = T1[k].begin(); T1kIt != T1[k].end(); ++T1kIt)
-          for (auto T2lIt = T2[l].begin(); T2lIt != T2[l].end(); ++T2lIt)
-            indices.add(T1kIt.index(), T2lIt.index());
-      }
-    indices.exportIdx(A);
-  }
 }
 }