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Add NaN propagation options to minCoeff/maxCoeff visitors.

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This commit is contained in:
Rasmus Munk Larsen
2021-03-16 17:02:50 +00:00
parent c0a889890f
commit 2e83cbbba9
3 changed files with 190 additions and 32 deletions
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38
Eigen/src/Core/DenseBase.h
View File

@@ -459,22 +459,48 @@ template<typename Derived> class DenseBase
// used.
// TODO(rmlarsen): Replace with default template argument when we move to
// c++11 or beyond.
EIGEN_DEVICE_FUNC typename internal::traits<Derived>::Scalar minCoeff() const {
EIGEN_DEVICE_FUNC inline typename internal::traits<Derived>::Scalar minCoeff() const {
return minCoeff<PropagateFast>();
}
EIGEN_DEVICE_FUNC typename internal::traits<Derived>::Scalar maxCoeff() const {
EIGEN_DEVICE_FUNC inline typename internal::traits<Derived>::Scalar maxCoeff() const {
return maxCoeff<PropagateFast>();
}
template<typename IndexType> EIGEN_DEVICE_FUNC
template<int NaNPropagation, typename IndexType>
EIGEN_DEVICE_FUNC
typename internal::traits<Derived>::Scalar minCoeff(IndexType* row, IndexType* col) const;
template<typename IndexType> EIGEN_DEVICE_FUNC
template<int NaNPropagation, typename IndexType>
EIGEN_DEVICE_FUNC
typename internal::traits<Derived>::Scalar maxCoeff(IndexType* row, IndexType* col) const;
template<typename IndexType> EIGEN_DEVICE_FUNC
template<int NaNPropagation, typename IndexType>
EIGEN_DEVICE_FUNC
typename internal::traits<Derived>::Scalar minCoeff(IndexType* index) const;
template<typename IndexType> EIGEN_DEVICE_FUNC
template<int NaNPropagation, typename IndexType>
EIGEN_DEVICE_FUNC
typename internal::traits<Derived>::Scalar maxCoeff(IndexType* index) const;
// TODO(rmlarsen): Replace these methods with a default template argument.
template<typename IndexType>
EIGEN_DEVICE_FUNC inline
typename internal::traits<Derived>::Scalar minCoeff(IndexType* row, IndexType* col) const {
return minCoeff<PropagateFast>(row, col);
}
template<typename IndexType>
EIGEN_DEVICE_FUNC inline
typename internal::traits<Derived>::Scalar maxCoeff(IndexType* row, IndexType* col) const {
return maxCoeff<PropagateFast>(row, col);
}
template<typename IndexType>
EIGEN_DEVICE_FUNC inline
typename internal::traits<Derived>::Scalar minCoeff(IndexType* index) const {
return minCoeff<PropagateFast>(index);
}
template<typename IndexType>
EIGEN_DEVICE_FUNC inline
typename internal::traits<Derived>::Scalar maxCoeff(IndexType* index) const {
return maxCoeff<PropagateFast>(index);
}
template<typename BinaryOp>
EIGEN_DEVICE_FUNC
Scalar redux(const BinaryOp& func) const;

118
Eigen/src/Core/Visitor.h
View File

@@ -157,7 +157,7 @@ struct coeff_visitor
*
* \sa DenseBase::minCoeff(Index*, Index*)
*/
template <typename Derived>
template <typename Derived, int NaNPropagation>
struct min_coeff_visitor : coeff_visitor<Derived>
{
typedef typename Derived::Scalar Scalar;
@@ -173,8 +173,40 @@ struct min_coeff_visitor : coeff_visitor<Derived>
}
};
template<typename Scalar>
struct functor_traits<min_coeff_visitor<Scalar> > {
template <typename Derived>
struct min_coeff_visitor<Derived, PropagateNumbers> : coeff_visitor<Derived>
{
typedef typename Derived::Scalar Scalar;
EIGEN_DEVICE_FUNC
void operator() (const Scalar& value, Index i, Index j)
{
if((numext::isnan)(this->res) || (!(numext::isnan)(value) && value < this->res))
{
this->res = value;
this->row = i;
this->col = j;
}
}
};
template <typename Derived>
struct min_coeff_visitor<Derived, PropagateNaN> : coeff_visitor<Derived>
{
typedef typename Derived::Scalar Scalar;
EIGEN_DEVICE_FUNC
void operator() (const Scalar& value, Index i, Index j)
{
if((numext::isnan)(value) || value < this->res)
{
this->res = value;
this->row = i;
this->col = j;
}
}
};
template<typename Scalar, int NaNPropagation>
struct functor_traits<min_coeff_visitor<Scalar, NaNPropagation> > {
enum {
Cost = NumTraits<Scalar>::AddCost
};
@@ -185,7 +217,7 @@ struct functor_traits<min_coeff_visitor<Scalar> > {
*
* \sa DenseBase::maxCoeff(Index*, Index*)
*/
template <typename Derived>
template <typename Derived, int NaNPropagation>
struct max_coeff_visitor : coeff_visitor<Derived>
{
typedef typename Derived::Scalar Scalar;
@@ -201,8 +233,40 @@ struct max_coeff_visitor : coeff_visitor<Derived>
}
};
template<typename Scalar>
struct functor_traits<max_coeff_visitor<Scalar> > {
template <typename Derived>
struct max_coeff_visitor<Derived, PropagateNumbers> : coeff_visitor<Derived>
{
typedef typename Derived::Scalar Scalar;
EIGEN_DEVICE_FUNC
void operator() (const Scalar& value, Index i, Index j)
{
if((numext::isnan)(this->res) || (!(numext::isnan)(value) && value > this->res))
{
this->res = value;
this->row = i;
this->col = j;
}
}
};
template <typename Derived>
struct max_coeff_visitor<Derived, PropagateNaN> : coeff_visitor<Derived>
{
typedef typename Derived::Scalar Scalar;
EIGEN_DEVICE_FUNC
void operator() (const Scalar& value, Index i, Index j)
{
if((numext::isnan)(value) || value > this->res)
{
this->res = value;
this->row = i;
this->col = j;
}
}
};
template<typename Scalar, int NaNPropagation>
struct functor_traits<max_coeff_visitor<Scalar, NaNPropagation> > {
enum {
Cost = NumTraits<Scalar>::AddCost
};
@@ -212,22 +276,24 @@ struct functor_traits<max_coeff_visitor<Scalar> > {
/** \fn DenseBase<Derived>::minCoeff(IndexType* rowId, IndexType* colId) const
* \returns the minimum of all coefficients of *this and puts in *row and *col its location.
*
*
* In case \c *this contains NaN, NaNPropagation determines the behavior:
* NaNPropagation == PropagateFast : undefined
* NaNPropagation == PropagateNaN : result is NaN
* NaNPropagation == PropagateNumbers : result is maximum of elements that are not NaN
* \warning the matrix must be not empty, otherwise an assertion is triggered.
*
* \warning the result is undefined if \c *this contains NaN.
*
* \sa DenseBase::minCoeff(Index*), DenseBase::maxCoeff(Index*,Index*), DenseBase::visit(), DenseBase::minCoeff()
*/
template<typename Derived>
template<typename IndexType>
template<int NaNPropagation, typename IndexType>
EIGEN_DEVICE_FUNC
typename internal::traits<Derived>::Scalar
DenseBase<Derived>::minCoeff(IndexType* rowId, IndexType* colId) const
{
eigen_assert(this->rows()>0 && this->cols()>0 && "you are using an empty matrix");
internal::min_coeff_visitor<Derived> minVisitor;
internal::min_coeff_visitor<Derived, NaNPropagation> minVisitor;
this->visit(minVisitor);
*rowId = minVisitor.row;
if (colId) *colId = minVisitor.col;
@@ -236,14 +302,16 @@ DenseBase<Derived>::minCoeff(IndexType* rowId, IndexType* colId) const
/** \returns the minimum of all coefficients of *this and puts in *index its location.
*
* In case \c *this contains NaN, NaNPropagation determines the behavior:
* NaNPropagation == PropagateFast : undefined
* NaNPropagation == PropagateNaN : result is NaN
* NaNPropagation == PropagateNumbers : result is maximum of elements that are not NaN
* \warning the matrix must be not empty, otherwise an assertion is triggered.
*
* \warning the result is undefined if \c *this contains NaN.
*
* \sa DenseBase::minCoeff(IndexType*,IndexType*), DenseBase::maxCoeff(IndexType*,IndexType*), DenseBase::visit(), DenseBase::minCoeff()
*/
template<typename Derived>
template<typename IndexType>
template<int NaNPropagation, typename IndexType>
EIGEN_DEVICE_FUNC
typename internal::traits<Derived>::Scalar
DenseBase<Derived>::minCoeff(IndexType* index) const
@@ -251,7 +319,7 @@ DenseBase<Derived>::minCoeff(IndexType* index) const
eigen_assert(this->rows()>0 && this->cols()>0 && "you are using an empty matrix");
EIGEN_STATIC_ASSERT_VECTOR_ONLY(Derived)
internal::min_coeff_visitor<Derived> minVisitor;
internal::min_coeff_visitor<Derived, NaNPropagation> minVisitor;
this->visit(minVisitor);
*index = IndexType((RowsAtCompileTime==1) ? minVisitor.col : minVisitor.row);
return minVisitor.res;
@@ -260,21 +328,23 @@ DenseBase<Derived>::minCoeff(IndexType* index) const
/** \fn DenseBase<Derived>::maxCoeff(IndexType* rowId, IndexType* colId) const
* \returns the maximum of all coefficients of *this and puts in *row and *col its location.
*
* In case \c *this contains NaN, NaNPropagation determines the behavior:
* NaNPropagation == PropagateFast : undefined
* NaNPropagation == PropagateNaN : result is NaN
* NaNPropagation == PropagateNumbers : result is maximum of elements that are not NaN
* \warning the matrix must be not empty, otherwise an assertion is triggered.
*
* \warning the result is undefined if \c *this contains NaN.
*
* \sa DenseBase::minCoeff(IndexType*,IndexType*), DenseBase::visit(), DenseBase::maxCoeff()
*/
template<typename Derived>
template<typename IndexType>
template<int NaNPropagation, typename IndexType>
EIGEN_DEVICE_FUNC
typename internal::traits<Derived>::Scalar
DenseBase<Derived>::maxCoeff(IndexType* rowPtr, IndexType* colPtr) const
{
eigen_assert(this->rows()>0 && this->cols()>0 && "you are using an empty matrix");
internal::max_coeff_visitor<Derived> maxVisitor;
internal::max_coeff_visitor<Derived, NaNPropagation> maxVisitor;
this->visit(maxVisitor);
*rowPtr = maxVisitor.row;
if (colPtr) *colPtr = maxVisitor.col;
@@ -283,14 +353,16 @@ DenseBase<Derived>::maxCoeff(IndexType* rowPtr, IndexType* colPtr) const
/** \returns the maximum of all coefficients of *this and puts in *index its location.
*
* In case \c *this contains NaN, NaNPropagation determines the behavior:
* NaNPropagation == PropagateFast : undefined
* NaNPropagation == PropagateNaN : result is NaN
* NaNPropagation == PropagateNumbers : result is maximum of elements that are not NaN
* \warning the matrix must be not empty, otherwise an assertion is triggered.
*
* \warning the result is undefined if \c *this contains NaN.
*
* \sa DenseBase::maxCoeff(IndexType*,IndexType*), DenseBase::minCoeff(IndexType*,IndexType*), DenseBase::visitor(), DenseBase::maxCoeff()
*/
template<typename Derived>
template<typename IndexType>
template<int NaNPropagation, typename IndexType>
EIGEN_DEVICE_FUNC
typename internal::traits<Derived>::Scalar
DenseBase<Derived>::maxCoeff(IndexType* index) const
@@ -298,7 +370,7 @@ DenseBase<Derived>::maxCoeff(IndexType* index) const
eigen_assert(this->rows()>0 && this->cols()>0 && "you are using an empty matrix");
EIGEN_STATIC_ASSERT_VECTOR_ONLY(Derived)
internal::max_coeff_visitor<Derived> maxVisitor;
internal::max_coeff_visitor<Derived, NaNPropagation> maxVisitor;
this->visit(maxVisitor);
*index = (RowsAtCompileTime==1) ? maxVisitor.col : maxVisitor.row;
return maxVisitor.res;