Fix a few simple compiler warnings

dune/gfe/geodesicfeassemblerwrapper.hh

@@ -84,7 +84,7 @@ splitVector(const std::vector<TargetSpace>& sol) const {
     Dune::TupleVector<std::vector<MixedSpace0>,std::vector<MixedSpace1>> solutionSplit;
     solutionSplit[_0].resize(n);
     solutionSplit[_1].resize(n);
-    for (int i = 0; i < n; i++) {
+    for (std::size_t i = 0; i < n; i++) {
         solutionSplit[_0][i] = sol[i].r; // Deformation part
         solutionSplit[_1][i] = sol[i].q; // Rotational part
     }
@@ -145,7 +145,7 @@ assembleGradientAndHessian(const std::vector<TargetSpace>& sol,
     hessian = 0;
     gradient.resize(n);
     gradient = 0;
-    for (int i = 0; i < n; i++) {
+    for (std::size_t i = 0; i < n; i++) {
         for (int j = 0; j < blocksize0 + blocksize1; j++)
             gradient[i][j] = j < blocksize0 ? gradient0[i][j] : gradient1[i][j - blocksize0];
     }

src/rod3d.cc

@@ -24,7 +24,6 @@ typedef RigidBodyMotion<double,3> TargetSpace;
 const int blocksize = TargetSpace::TangentVector::dimension;
 
 using namespace Dune;
-using std::string;
 
 int main (int argc, char *argv[]) try
 {

test/cosseratenergytest.cc

@@ -15,8 +15,6 @@
 #include "multiindex.hh"
 #include "valuefactory.hh"
 
-const double eps = 1e-4;
-
 typedef RigidBodyMotion<double,3> TargetSpace;
 
 using namespace Dune;

test/geodesicfeassemblerwrappertest.cc

@@ -114,7 +114,6 @@ int main (int argc, char *argv[])
   ));
 
   using CompositeBasis = decltype(compositeBasis);
-  using LocalView = typename CompositeBasis::LocalView;
 
   /////////////////////////////////////////////////////////////////////////
   //  Create the energy functions with their parameters
@@ -170,7 +169,7 @@ int main (int argc, char *argv[])
   x[_0].resize(compositeBasis.size({0}));
   x[_1].resize(compositeBasis.size({1}));
   std::vector<RBM> xRBM(compositeBasis.size({0}));
-  for (int i = 0; i < compositeBasis.size({0}); i++) {
+  for (std::size_t i = 0; i < compositeBasis.size({0}); i++) {
     for (int j = 0; j < gridDim; j++)
       initialDeformation[i][j] = identity[i][j];
     x[_0][i] = initialDeformation[i];