Update Eigen to version 3.2.1

Main purpose of this is to have SparseLU solver which
we can use now as a replacement to opennl library.

1 files changed, 4 insertions, 3 deletions

diff --git a/extern/Eigen3/Eigen/src/Core/util/ForwardDeclarations.h b/extern/Eigen3/Eigen/src/Core/util/ForwardDeclarations.h
index bcdfe3914e3..d6a814586d3 100644
--- a/extern/Eigen3/Eigen/src/Core/util/ForwardDeclarations.h
+++ b/extern/Eigen3/Eigen/src/Core/util/ForwardDeclarations.h
@@ -78,8 +78,7 @@ template<typename ExpressionType> class NestByValue;
 template<typename ExpressionType> class ForceAlignedAccess;
 template<typename ExpressionType> class SwapWrapper;
 
-template<typename XprType, int BlockRows=Dynamic, int BlockCols=Dynamic, bool InnerPanel = false,
-         bool HasDirectAccess = internal::has_direct_access<XprType>::ret> class Block;
+template<typename XprType, int BlockRows=Dynamic, int BlockCols=Dynamic, bool InnerPanel = false> class Block;
 
 template<typename MatrixType, int Size=Dynamic> class VectorBlock;
 template<typename MatrixType> class Transpose;
@@ -154,7 +153,6 @@ template<typename LhsScalar, typename RhsScalar, bool ConjLhs=false, bool ConjRh
 template<typename Scalar> struct scalar_sum_op;
 template<typename Scalar> struct scalar_difference_op;
 template<typename LhsScalar,typename RhsScalar> struct scalar_conj_product_op;
-template<typename Scalar> struct scalar_quotient_op;
 template<typename Scalar> struct scalar_opposite_op;
 template<typename Scalar> struct scalar_conjugate_op;
 template<typename Scalar> struct scalar_real_op;
@@ -185,6 +183,7 @@ template<typename Scalar> struct scalar_identity_op;
 
 template<typename LhsScalar,typename RhsScalar=LhsScalar> struct scalar_product_op;
 template<typename LhsScalar,typename RhsScalar> struct scalar_multiple2_op;
+template<typename LhsScalar,typename RhsScalar=LhsScalar> struct scalar_quotient_op;
 
 } // end namespace internal
 
@@ -271,6 +270,8 @@ template<typename Derived> struct MatrixExponentialReturnValue;
 template<typename Derived> class MatrixFunctionReturnValue;
 template<typename Derived> class MatrixSquareRootReturnValue;
 template<typename Derived> class MatrixLogarithmReturnValue;
+template<typename Derived> class MatrixPowerReturnValue;
+template<typename Derived, typename Lhs, typename Rhs> class MatrixPowerProduct;
 
 namespace internal {
 template <typename Scalar>