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make shameless use of const_cast to reduce code redundancy. This means Eigen2
gives up enforcing constness. I really tried to enforce it, but it really was much hassle because our expression templates can be lvalues (not only rvalues) and so much code had to be written twice.
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@@ -31,7 +31,7 @@ template<typename MatrixType> class Opposite
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{
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public:
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typedef typename MatrixType::Scalar Scalar;
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typedef typename MatrixType::ConstRef MatRef;
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typedef typename MatrixType::Ref MatRef;
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friend class Object<Scalar, Opposite<MatrixType> >;
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static const int RowsAtCompileTime = MatrixType::RowsAtCompileTime,
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@@ -45,8 +45,7 @@ template<typename MatrixType> class Opposite
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EI_INHERIT_ASSIGNMENT_OPERATORS(Opposite)
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private:
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Opposite& _ref() { return *this; }
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const Opposite& _constRef() const { return *this; }
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const Opposite& _ref() const { return *this; }
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int _rows() const { return m_matrix.rows(); }
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int _cols() const { return m_matrix.cols(); }
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@@ -63,7 +62,7 @@ template<typename Scalar, typename Derived>
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Opposite<Derived>
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Object<Scalar, Derived>::operator-() const
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{
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return Opposite<Derived>(static_cast<const Derived*>(this)->constRef());
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return Opposite<Derived>(static_cast<const Derived*>(this)->ref());
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}
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#endif // EI_OPPOSITE_H
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