Fix bug #679

Eigen/src/plugins/MatrixCwiseBinaryOps.h

diff --git a/Eigen/src/plugins/MatrixCwiseBinaryOps.h b/Eigen/src/plugins/MatrixCwiseBinaryOps.h
index 3a737df..7f62149 100644
--- a/Eigen/src/plugins/MatrixCwiseBinaryOps.h
+++ b/Eigen/src/plugins/MatrixCwiseBinaryOps.h
@@ -83,7 +83,7 @@
 EIGEN_STRONG_INLINE const CwiseBinaryOp<internal::scalar_min_op<Scalar>, const Derived, const ConstantReturnType>
 cwiseMin(const Scalar &other) const
 {
-  return cwiseMin(Derived::PlainObject::Constant(rows(), cols(), other));
+  return cwiseMin(Derived::Constant(rows(), cols(), other));
 }
 
 /** \returns an expression of the coefficient-wise max of *this and \a other
@@ -107,7 +107,7 @@
 EIGEN_STRONG_INLINE const CwiseBinaryOp<internal::scalar_max_op<Scalar>, const Derived, const ConstantReturnType>
 cwiseMax(const Scalar &other) const
 {
-  return cwiseMax(Derived::PlainObject::Constant(rows(), cols(), other));
+  return cwiseMax(Derived::Constant(rows(), cols(), other));
 }