devtools/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2026-04-10 11:34:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

Use Eigen::fix<N> to pass compile-time sizes.

Browse Source
This commit is contained in:
Gael Guennebaud
2017-02-11 15:31:28 +01:00
parent 24409f3acd
commit 83d6a529c3
6 changed files with 46 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
Eigen/src/Core/Reshaped.h
View File

@@ -13,7 +13,7 @@
namespace Eigen {
/** \class Reshapedd
/** \class Reshaped
* \ingroup Core_Module
*
* \brief Expression of a fixed-size or dynamic-size reshape
@@ -23,27 +23,24 @@ namespace Eigen {
* \tparam Cols the number of columns of the reshape we are taking at compile time (optional)
* \tparam Order
*
* This class represents an expression of either a fixed-size or dynamic-size reshape. It is the return
* type of DenseBase::reshaped(Index,Index) and DenseBase::reshape<int,int>() and
* This class represents an expression of either a fixed-size or dynamic-size reshape.
* It is the return type of DenseBase::reshaped(NRowsType,NColsType) and
* most of the time this is the only way it is used.
*
* However, if you want to directly maniputate reshape expressions,
* However, in C++98, if you want to directly maniputate reshaped expressions,
* for instance if you want to write a function returning such an expression, you
* will need to use this class.
* will need to use this class. In C++11, it is advised to use the \em auto
* keyword for such use cases.
*
* Here is an example illustrating the dynamic case:
* \include class_Reshaped.cpp
* Output: \verbinclude class_Reshaped.out
*
* \note Even though this expression has dynamic size, in the case where \a XprType
* has fixed size, this expression inherits a fixed maximal size which means that evaluating
* it does not cause a dynamic memory allocation.
*
* Here is an example illustrating the fixed-size case:
* \include class_FixedReshaped.cpp
* Output: \verbinclude class_FixedReshaped.out
*
* \sa DenseBase::reshaped(Index,Index), DenseBase::reshaped(), class VectorReshaped
* \sa DenseBase::reshaped(NRowsType,NColsType)
*/
namespace internal {

41
Eigen/src/plugins/ReshapedMethods.h
View File

@@ -17,30 +17,53 @@
///
/// \sa class Reshaped, fix, fix<N>(int)
///
#ifdef EIGEN_PARSED_BY_DOXYGEN
template<typename NRowsType, typename NColsType, typename OrderType>
EIGEN_DEVICE_FUNC
inline Reshaped<Derived,...>
reshaped(NRowsType nRows, NColsType nCols, OrderType = ColOrder);
/** This is the const version of reshaped(NRowsType,NColsType). */
template<typename NRowsType, typename NColsType, typename OrderType>
EIGEN_DEVICE_FUNC
inline const Reshaped<const Derived,...>
reshaped(NRowsType nRows, NColsType nCols, OrderType = ColOrder) const;
#else
template<typename NRowsType, typename NColsType>
EIGEN_DEVICE_FUNC
#ifndef EIGEN_PARSED_BY_DOXYGEN
inline Reshaped<Derived,internal::get_fixed_value<NRowsType>::value,internal::get_fixed_value<NColsType>::value>
#else
inline Reshaped<Derived,...>
#endif
reshaped(NRowsType nRows, NColsType nCols)
{
return Reshaped<Derived,internal::get_fixed_value<NRowsType>::value,internal::get_fixed_value<NColsType>::value>(
derived(), internal::get_runtime_value(nRows), internal::get_runtime_value(nCols));
}
/** This is the const version of reshaped(NRowsType,NColsType). */
template<typename NRowsType, typename NColsType, typename OrderType>
EIGEN_DEVICE_FUNC
inline Reshaped<Derived,internal::get_fixed_value<NRowsType>::value,internal::get_fixed_value<NColsType>::value,OrderType::value>
reshaped(NRowsType nRows, NColsType nCols, OrderType)
{
return Reshaped<Derived,internal::get_fixed_value<NRowsType>::value,internal::get_fixed_value<NColsType>::value,OrderType::value>(
derived(), internal::get_runtime_value(nRows), internal::get_runtime_value(nCols));
}
template<typename NRowsType, typename NColsType>
EIGEN_DEVICE_FUNC
#ifndef EIGEN_PARSED_BY_DOXYGEN
inline const Reshaped<const Derived,internal::get_fixed_value<NRowsType>::value,internal::get_fixed_value<NColsType>::value>
#else
inline const Reshaped<const Derived,...>
#endif
reshaped(NRowsType nRows, NColsType nCols) const
{
return Reshaped<const Derived,internal::get_fixed_value<NRowsType>::value,internal::get_fixed_value<NColsType>::value>(
derived(), internal::get_runtime_value(nRows), internal::get_runtime_value(nCols));
}
template<typename NRowsType, typename NColsType, typename OrderType>
EIGEN_DEVICE_FUNC
inline const Reshaped<const Derived,internal::get_fixed_value<NRowsType>::value,internal::get_fixed_value<NColsType>::value,OrderType::value>
reshaped(NRowsType nRows, NColsType nCols, OrderType) const
{
return Reshaped<const Derived,internal::get_fixed_value<NRowsType>::value,internal::get_fixed_value<NColsType>::value,OrderType::value>(
derived(), internal::get_runtime_value(nRows), internal::get_runtime_value(nCols));
}
#endif // EIGEN_PARSED_BY_DOXYGEN