fix compile errors in Tridiagonalization and in doc examples

3 files changed, 5 insertions, 5 deletions

diff --git a/doc/examples/class_FixedVectorBlock.cpp b/doc/examples/class_FixedVectorBlock.cpp
index 9be7d8d71..c88c9fbf1 100644
--- a/doc/examples/class_FixedVectorBlock.cpp
+++ b/doc/examples/class_FixedVectorBlock.cpp
@@ -11,10 +11,10 @@ firstTwo(MatrixBase<Derived>& v)
 }
 
 template<typename Derived>
-const Eigen::VectorBlock<Derived, 2>
+const Eigen::VectorBlock<const Derived, 2>
 firstTwo(const MatrixBase<Derived>& v)
 {
-  return Eigen::VectorBlock<Derived, 2>(v.derived(), 0);
+  return Eigen::VectorBlock<const Derived, 2>(v.derived(), 0);
 }
 
 int main(int, char**)
diff --git a/doc/examples/class_VectorBlock.cpp b/doc/examples/class_VectorBlock.cpp
index 2f02c8f69..dc213df20 100644
--- a/doc/examples/class_VectorBlock.cpp
+++ b/doc/examples/class_VectorBlock.cpp
@@ -11,10 +11,10 @@ segmentFromRange(MatrixBase<Derived>& v, int start, int end)
 }
 
 template<typename Derived>
-const Eigen::VectorBlock<Derived>
+const Eigen::VectorBlock<const Derived>
 segmentFromRange(const MatrixBase<Derived>& v, int start, int end)
 {
-  return Eigen::VectorBlock<Derived>(v.derived(), start, end-start);
+  return Eigen::VectorBlock<const Derived>(v.derived(), start, end-start);
 }
 
 int main(int, char**)
diff --git a/doc/snippets/Tridiagonalization_diagonal.cpp b/doc/snippets/Tridiagonalization_diagonal.cpp
index a4a5a9c5a..6eec82169 100644
--- a/doc/snippets/Tridiagonalization_diagonal.cpp
+++ b/doc/snippets/Tridiagonalization_diagonal.cpp
@@ -4,7 +4,7 @@ cout << "Here is a random self-adjoint 4x4 matrix:" << endl << A << endl << endl
 
 Tridiagonalization<MatrixXcd> triOfA(A);
 MatrixXd T = triOfA.matrixT();
-cout << "The tridiagonal matrix T is:" << endl << triOfA.matrixT() << endl << endl;
+cout << "The tridiagonal matrix T is:" << endl << T << endl << endl;
 
 cout << "We can also extract the diagonals of T directly ..." << endl;
 VectorXd diag = triOfA.diagonal();