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*add operator()(int) for vectors, synonymous to operator[](int).

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I don't see any reason not to allow it, it doesn't add much code, and
 it makes porting from eigen1 easier.
*expand tests/basicstuff to first test coefficient access methods
This commit is contained in:
Benoit Jacob
2008-08-18 12:33:14 +00:00
parent 95a1283bf6
commit baf0cffedd
3 changed files with 48 additions and 0 deletions
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33
Eigen/src/Core/Coeffs.h
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@@ -134,6 +134,23 @@ inline const typename ei_traits<Derived>::Scalar MatrixBase<Derived>
return derived().coeff(index);
}
/** \returns the coefficient at given index.
*
* This is synonymous to operator[](int) const.
*
* This method is allowed only for vector expressions, and for matrix expressions having the LinearAccessBit.
*
* \sa operator[](int), operator()(int,int) const, x() const, y() const,
* z() const, w() const
*/
template<typename Derived>
inline const typename ei_traits<Derived>::Scalar MatrixBase<Derived>
::operator()(int index) const
{
ei_assert(index >= 0 && index < size());
return derived().coeff(index);
}
/** Short version: don't use this function, use
* \link operator[](int) \endlink instead.
*
@@ -170,6 +187,22 @@ inline typename ei_traits<Derived>::Scalar& MatrixBase<Derived>
return derived().coeffRef(index);
}
/** \returns a reference to the coefficient at given index.
*
* This is synonymous to operator[](int).
*
* This method is allowed only for vector expressions, and for matrix expressions having the LinearAccessBit.
*
* \sa operator[](int) const, operator()(int,int), x(), y(), z(), w()
*/
template<typename Derived>
inline typename ei_traits<Derived>::Scalar& MatrixBase<Derived>
::operator()(int index)
{
ei_assert(index >= 0 && index < size());
return derived().coeffRef(index);
}
/** equivalent to operator[](0). */
template<typename Derived>
inline const typename ei_traits<Derived>::Scalar MatrixBase<Derived>

2
Eigen/src/Core/MatrixBase.h
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@@ -249,9 +249,11 @@ template<typename Derived> class MatrixBase
const Scalar coeff(int index) const;
const Scalar operator[](int index) const;
const Scalar operator()(int index) const;
Scalar& coeffRef(int index);
Scalar& operator[](int index);
Scalar& operator()(int index);
template<typename OtherDerived>
void copyCoeff(int row, int col, const MatrixBase<OtherDerived>& other);