directionalSubDiff works on BlockVectors!

src/bisection-example-new.cc

@@ -62,6 +62,7 @@ class SampleFunctional {
        since A is symmetric.
      */
 
+    {
       SmallVector tmp2;
       A_.mv(descDir, tmp2);
       double const rest_A = tmp2 * descDir;
@@ -79,6 +80,11 @@ class SampleFunctional {
       MyDirectionalConvexFunctionType;
       MyDirectionalConvexFunctionType rest(rest_A, rest_b, phi, xx, dd);
 
+      // Experiment a bit
+      Interval<double> D;
+      rest.subDiff(0, D);
+    }
+
     if (descDir == SmallVector(0.0))
       return SmallVector(0.0);
 

src/mynonlinearity.cc

@@ -24,16 +24,16 @@ class MyNonlinearity {
   typedef Dune::BlockVector<SmallVector> VectorType;
   typedef Dune::BlockVector<SmallMatrix> MatrixType;
 
-  void directionalSubDiff(SmallVector u, SmallVector v, Interval<double>& D) {
-    if (u == SmallVector(0.0)) {
-      D[0] = D[1] = func_.rightDifferential(0);
-    } else if (u * v > 0) {
-      D[1] = (v * u) * func_.rightDifferential(u.two_norm()) / u.two_norm();
-      D[0] = (v * u) * func_.leftDifferential(u.two_norm()) / u.two_norm();
-    } else {
-      D[1] = (v * u) * func_.leftDifferential(u.two_norm()) / u.two_norm();
-      D[0] = (v * u) * func_.rightDifferential(u.two_norm()) / u.two_norm();
-    }
+  void directionalSubDiff(VectorType u, VectorType v, Interval<double>& D) {
+    // if (u == SmallVector(0.0)) {
+    //   D[0] = D[1] = func_.rightDifferential(0);
+    // } else if (u * v > 0) {
+    //   D[1] = (v * u) * func_.rightDifferential(u.two_norm())/u.two_norm();
+    //   D[0] = (v * u) * func_.leftDifferential(u.two_norm())/u.two_norm();
+    // } else {
+    //   D[1] = (v * u) * func_.leftDifferential(u.two_norm())/u.two_norm();
+    //   D[0] = (v * u) * func_.rightDifferential(u.two_norm())/u.two_norm();
+    // }
   }
 
   void directionalDomain(const VectorType&, const VectorType&,