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Override MatrixBase::eval() since matrices don't need

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to be evaluated, it is enough to just read them.
This commit is contained in:
Benoit Jacob 2008-06-20 15:26:39 +00:00
parent 54238961d6
commit 574416b842
1 changed files with 8 additions and 0 deletions
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8
Eigen/src/Core/Matrix.h
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@ -336,6 +336,14 @@ class Matrix : public MatrixBase<Matrix<_Scalar, _Rows, _Cols, _MaxRows, _MaxCol
} }
/** Destructor */ /** Destructor */
inline ~Matrix() {} inline ~Matrix() {}
/** Override MatrixBase::eval() since matrices don't need to be evaluated, it is enough to just read them.
* This prevents a useless copy when doing e.g. "m1 = m2.eval()"
*/
const Matrix& eval() const
{
return *this;
}
}; };
#define EIGEN_MAKE_TYPEDEFS(Type, TypeSuffix, Size, SizeSuffix) \ #define EIGEN_MAKE_TYPEDEFS(Type, TypeSuffix, Size, SizeSuffix) \