From d387dfa9dcedf474873691f230a9d6b85ec9ef57 Mon Sep 17 00:00:00 2001
From: Chen-Pang He <jdh8@ms63.hinet.net>
Date: Mon, 24 Sep 2012 23:36:19 +0800
Subject: [PATCH] Remove unnecessary code. lazyAssign seems to fix all
 (noalias, initialization, etc.)

---
 Eigen/src/Core/NoAlias.h                          |  4 ----
 .../Eigen/src/MatrixFunctions/MatrixPowerBase.h   | 15 ---------------
 2 files changed, 19 deletions(-)

diff --git a/Eigen/src/Core/NoAlias.h b/Eigen/src/Core/NoAlias.h
index ac1396f68..0112c865b 100644
--- a/Eigen/src/Core/NoAlias.h
+++ b/Eigen/src/Core/NoAlias.h
@@ -80,10 +80,6 @@ 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, typename Lhs, typename Rhs>
-    EIGEN_STRONG_INLINE ExpressionType& operator=(const MatrixPowerProductBase<Derived,Lhs,Rhs>& other)
-    { other.derived().evalTo(m_expression); return m_expression; }
 #endif
 
     ExpressionType& expression() const
diff --git a/unsupported/Eigen/src/MatrixFunctions/MatrixPowerBase.h b/unsupported/Eigen/src/MatrixFunctions/MatrixPowerBase.h
index 28617ff6f..a809609d5 100644
--- a/unsupported/Eigen/src/MatrixFunctions/MatrixPowerBase.h
+++ b/unsupported/Eigen/src/MatrixFunctions/MatrixPowerBase.h
@@ -250,26 +250,11 @@ class MatrixPowerProductBase : public MatrixBase<Derived>
     typedef MatrixBase<Derived> Base;
     EIGEN_DENSE_PUBLIC_INTERFACE(MatrixPowerProductBase)
 
-    typedef typename Base::PlainObject PlainObject;
-    
     inline Index rows() const { return derived().rows(); }
     inline Index cols() const { return derived().cols(); }
 
     template<typename ResultType>
     inline void evalTo(ResultType& res) const { derived().evalTo(res); }
-
-    const PlainObject& eval() const
-    {
-      m_result.resize(rows(), cols());
-      derived().evalTo(m_result);
-      return m_result;
-    }
-
-    operator const PlainObject&() const
-    { return eval(); }
-
-  protected:
-    mutable PlainObject m_result;
 };
 
 template<typename Derived>