Added support for tensor contractions

Updated expression evaluation mechanism to also compute the size of the tensor result
Misc fixes and improvements.

1 files changed, 2 insertions, 0 deletions

diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h b/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h
index 03ac8d516..239b5cb67 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h
@@ -21,6 +21,8 @@ template<typename NullaryOp, typename PlainObjectType> class TensorCwiseNullaryO
 template<typename UnaryOp, typename XprType> class TensorCwiseUnaryOp;
 template<typename BinaryOp, typename LeftXprType, typename RightXprType> class TensorCwiseBinaryOp;
 template<typename IfXprType, typename ThenXprType, typename ElseXprType> class TensorSelectOp;
+template <typename XprType> class TensorReductionOp;
+template<typename Dimensions, typename LeftXprType, typename RightXprType> class TensorContractionOp;
 
 template<typename ExpressionType, typename DeviceType> class TensorDevice;