* added a Tridiagonalization class for selfadjoint matrices

* added MatrixBase::real()
* added the ability to extract a selfadjoint matrix from the
  lower or upper part of a matrix, e.g.:
    m.extract<Upper|SelfAdjoint>()
  will ignore the strict lower part and return a selfadjoint.
  This is compatible with ZeroDiag and UnitDiag.

1 files changed, 11 insertions, 1 deletions

diff --git a/Eigen/src/Core/CwiseUnaryOp.h b/Eigen/src/Core/CwiseUnaryOp.h
index 893c8abf6..8715f931e 100644
--- a/Eigen/src/Core/CwiseUnaryOp.h
+++ b/Eigen/src/Core/CwiseUnaryOp.h
@@ -139,7 +139,7 @@ MatrixBase<Derived>::cwiseAbs2() const
   return derived();
 }
 
-/** \returns an expression of the complex conjugate of *this.
+/** \returns an expression of the complex conjugate of \c *this.
   *
   * \sa adjoint() */
 template<typename Derived>
@@ -149,6 +149,16 @@ MatrixBase<Derived>::conjugate() const
   return ConjugateReturnType(derived());
 }
 
+/** \returns an expression of the real part of \c *this.
+  *
+  * \sa adjoint() */
+template<typename Derived>
+inline const typename MatrixBase<Derived>::RealReturnType
+MatrixBase<Derived>::real() const
+{
+  return derived();
+}
+
 /** \returns an expression of *this with the \a Scalar type casted to
   * \a NewScalar.
   *