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add partial count redux (adapted patch from Ricard Marxer)

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Gael Guennebaud
2009-01-24 15:22:44 +00:00
parent 81b0ab53cf
commit 56c7e164f0
4 changed files with 20 additions and 2 deletions
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13
Eigen/src/Array/PartialRedux.h
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@@ -114,6 +114,7 @@ EIGEN_MEMBER_FUNCTOR(minCoeff, (Size-1)*NumTraits<Scalar>::AddCost);
EIGEN_MEMBER_FUNCTOR(maxCoeff, (Size-1)*NumTraits<Scalar>::AddCost);
EIGEN_MEMBER_FUNCTOR(all, (Size-1)*NumTraits<Scalar>::AddCost);
EIGEN_MEMBER_FUNCTOR(any, (Size-1)*NumTraits<Scalar>::AddCost);
EIGEN_MEMBER_FUNCTOR(count, (Size-1)*NumTraits<Scalar>::AddCost);
/** \internal */
template <typename BinaryOp, typename Scalar>
@@ -173,7 +174,7 @@ template<typename ExpressionType, int Direction> class PartialRedux
};
typedef typename ExpressionType::PlainMatrixType CrossReturnType;
inline PartialRedux(const ExpressionType& matrix) : m_matrix(matrix) {}
/** \internal */
@@ -246,6 +247,16 @@ template<typename ExpressionType, int Direction> class PartialRedux
* \sa MatrixBase::any() */
const typename ReturnType<ei_member_any>::Type any() const
{ return _expression(); }
/** \returns a row (or column) vector expression representing
* the number of \c true coefficients of each respective column (or row).
*
* Example: \include PartialRedux_count.cpp
* Output: \verbinclude PartialRedux_count.out
*
* \sa MatrixBase::count() */
const PartialReduxExpr<ExpressionType, ei_member_count<int>, Direction> count() const
{ return _expression(); }
/** \returns a 3x3 matrix expression of the cross product
* of each column or row of the referenced expression with the \a other vector.