Merge branch 'fix/signed-unsigned-warnings' into 'master'

[Warnings] Fix a signed/unsigned warning.

See merge request core/dune-istl!126

dune/istl/bdmatrix.hh

@@ -5,6 +5,8 @@
 
 #include <memory>
 
+#include <dune/common/rangeutilities.hh>
+
 #include <dune/istl/bcrsmatrix.hh>
 
 /** \file
@@ -81,12 +83,12 @@ namespace Dune {
                                      size,   // columns
                                      size);  // nonzeros
 
-      for (int i=0; i<size; i++)
+      for (auto i : range(size))
         this->BCRSMatrix<B,A>::setrowsize(i, 1);
 
       this->BCRSMatrix<B,A>::endrowsizes();
 
-      for (int i=0; i<size; i++)
+      for (auto i : range(size))
         this->BCRSMatrix<B,A>::addindex(i, i);
 
       this->BCRSMatrix<B,A>::endindices();

dune/istl/repartition.hh

@@ -26,6 +26,7 @@ extern "C"
 #include <dune/common/parallel/indexset.hh>
 #include <dune/common/parallel/indicessyncer.hh>
 #include <dune/common/parallel/remoteindices.hh>
+#include <dune/common/rangeutilities.hh>
 
 #include <dune/istl/owneroverlapcopy.hh>
 #include <dune/istl/paamg/graph.hh>
@@ -1442,7 +1443,7 @@ namespace Dune
 #ifdef DEBUG_REPART
     std::cout<<mype<<": myDomain: "<<myDomain<<std::endl;
     std::cout<<mype<<": DomainMapping: ";
-    for(int j=0; j<nparts; j++) {
+    for(auto j : range(nparts)) {
       std::cout<<" do: "<<j<<" pe: "<<domainMapping[j]<<" ";
     }
     std::cout<<std::endl;

dune/istl/test/cgconditiontest.cc

@@ -117,7 +117,7 @@ int main(int argc, char **argv)
     for (int row = 0; row < N; ++row) {
       double factor = 0.8 + 0.2 * ((double)row / N);
       for (int i = -10; i <= 10; i++) {
-        if (row+i >= 0 && row+i < T.N())
+        if (row+i >= 0 && row+i < int(T.N()))
           T[row][row+i] = -1.0 * factor;
       }
       T[row][row] = 20.0 * factor;