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now if Derived has the DirectAccess flag, then MatrixBase<Derived>::coeff() const returns a const Scalar& and not a Scalar as before.

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useful for people doing direct access. + 1 bugfix thanks to Patrick Mihelich, forgot a & in MapBase::coeff(int).
This commit is contained in:
Benoit Jacob
2009-04-01 00:39:56 +00:00
parent 2f45eeb0c6
commit 113fc3a260
3 changed files with 23 additions and 19 deletions
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22
Eigen/src/Core/MatrixBase.h
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@@ -199,6 +199,10 @@ template<typename Derived> class MatrixBase
*/
typedef typename ei_plain_matrix_type<Derived>::type PlainMatrixType_ColMajor;
/** \internal the return type of coeff()
*/
typedef typename ei_meta_if<int(Flags)&DirectAccessBit, const Scalar&, Scalar>::ret CoeffReturnType;
/** \internal Represents a matrix with all coefficients equal to one another*/
typedef CwiseNullaryOp<ei_scalar_constant_op<Scalar>,Derived> ConstantReturnType;
/** \internal Represents a scalar multiple of a matrix */
@@ -264,15 +268,15 @@ template<typename Derived> class MatrixBase
template<typename OtherDerived>
CommaInitializer<Derived> operator<< (const MatrixBase<OtherDerived>& other);
const Scalar coeff(int row, int col) const;
const Scalar operator()(int row, int col) const;
const CoeffReturnType coeff(int row, int col) const;
const CoeffReturnType operator()(int row, int col) const;
Scalar& coeffRef(int row, int col);
Scalar& operator()(int row, int col);
const Scalar coeff(int index) const;
const Scalar operator[](int index) const;
const Scalar operator()(int index) const;
const CoeffReturnType coeff(int index) const;
const CoeffReturnType operator[](int index) const;
const CoeffReturnType operator()(int index) const;
Scalar& coeffRef(int index);
Scalar& operator[](int index);
@@ -299,10 +303,10 @@ template<typename Derived> class MatrixBase
template<int StoreMode>
void writePacket(int index, const PacketScalar& x);
const Scalar x() const;
const Scalar y() const;
const Scalar z() const;
const Scalar w() const;
const CoeffReturnType x() const;
const CoeffReturnType y() const;
const CoeffReturnType z() const;
const CoeffReturnType w() const;
Scalar& x();
Scalar& y();
Scalar& z();