From 446d14f6ada663b1e5d0a8afc37c1e9b054b1b29 Mon Sep 17 00:00:00 2001
From: Chen-Pang He <jdh8@ms63.hinet.net>
Date: Sat, 22 Sep 2012 03:26:00 +0800
Subject: Implement matrix power-matrix product again

---
 Eigen/src/Core/NoAlias.h                  | 4 ++++
 Eigen/src/Core/util/ForwardDeclarations.h | 1 +
 2 files changed, 5 insertions(+)

(limited to 'Eigen/src/Core')

diff --git a/Eigen/src/Core/NoAlias.h b/Eigen/src/Core/NoAlias.h
index 0112c865b..fcf2c479c 100644
--- a/Eigen/src/Core/NoAlias.h
+++ b/Eigen/src/Core/NoAlias.h
@@ -80,6 +80,10 @@ class NoAlias
     template<typename Lhs, typename Rhs, int NestingFlags>
     EIGEN_STRONG_INLINE ExpressionType& operator-=(const CoeffBasedProduct<Lhs,Rhs,NestingFlags>& other)
     { return m_expression.derived() -= CoeffBasedProduct<Lhs,Rhs,NestByRefBit>(other.lhs(), other.rhs()); }
+
+    template<typename Derived>
+    EIGEN_STRONG_INLINE ExpressionType& operator=(const MatrixPowerProductBase<Derived>& other)
+    { other.derived().evalTo(m_expression); return m_expression; }
 #endif
 
     ExpressionType& expression() const
diff --git a/Eigen/src/Core/util/ForwardDeclarations.h b/Eigen/src/Core/util/ForwardDeclarations.h
index 30d32e2dc..1a3e14b30 100644
--- a/Eigen/src/Core/util/ForwardDeclarations.h
+++ b/Eigen/src/Core/util/ForwardDeclarations.h
@@ -272,6 +272,7 @@ template<typename Derived> class MatrixFunctionReturnValue;
 template<typename Derived> class MatrixSquareRootReturnValue;
 template<typename Derived> class MatrixLogarithmReturnValue;
 template<typename Derived> class MatrixPowerReturnValue;
+template<typename Derived> class MatrixPowerProductBase;
 
 namespace internal {
 template <typename Scalar>
-- 
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