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ADD: added other eigen lib

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This commit is contained in:
Henry Winkel
2022-12-21 16:19:04 +01:00
parent a570766dc6
commit 9e56c7f2c0
832 changed files with 36586 additions and 20006 deletions
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18
libs/eigen/doc/examples/nullary_indexing.cpp
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@@ -1,8 +1,6 @@
#include <Eigen/Core>
#include <iostream>
using namespace Eigen;
// [functor]
template<class ArgType, class RowIndexType, class ColIndexType>
class indexing_functor {
@@ -10,10 +8,10 @@ class indexing_functor {
const RowIndexType &m_rowIndices;
const ColIndexType &m_colIndices;
public:
typedef Matrix<typename ArgType::Scalar,
typedef Eigen::Matrix<typename ArgType::Scalar,
RowIndexType::SizeAtCompileTime,
ColIndexType::SizeAtCompileTime,
ArgType::Flags&RowMajorBit?RowMajor:ColMajor,
ArgType::Flags&Eigen::RowMajorBit?Eigen::RowMajor:Eigen::ColMajor,
RowIndexType::MaxSizeAtCompileTime,
ColIndexType::MaxSizeAtCompileTime> MatrixType;
@@ -21,7 +19,7 @@ public:
: m_arg(arg), m_rowIndices(row_indices), m_colIndices(col_indices)
{}
const typename ArgType::Scalar& operator() (Index row, Index col) const {
const typename ArgType::Scalar& operator() (Eigen::Index row, Eigen::Index col) const {
return m_arg(m_rowIndices[row], m_colIndices[col]);
}
};
@@ -29,7 +27,7 @@ public:
// [function]
template <class ArgType, class RowIndexType, class ColIndexType>
CwiseNullaryOp<indexing_functor<ArgType,RowIndexType,ColIndexType>, typename indexing_functor<ArgType,RowIndexType,ColIndexType>::MatrixType>
Eigen::CwiseNullaryOp<indexing_functor<ArgType,RowIndexType,ColIndexType>, typename indexing_functor<ArgType,RowIndexType,ColIndexType>::MatrixType>
mat_indexing(const Eigen::MatrixBase<ArgType>& arg, const RowIndexType& row_indices, const ColIndexType& col_indices)
{
typedef indexing_functor<ArgType,RowIndexType,ColIndexType> Func;
@@ -43,8 +41,8 @@ int main()
{
std::cout << "[main1]\n";
Eigen::MatrixXi A = Eigen::MatrixXi::Random(4,4);
Array3i ri(1,2,1);
ArrayXi ci(6); ci << 3,2,1,0,0,2;
Eigen::Array3i ri(1,2,1);
Eigen::ArrayXi ci(6); ci << 3,2,1,0,0,2;
Eigen::MatrixXi B = mat_indexing(A, ri, ci);
std::cout << "A =" << std::endl;
std::cout << A << std::endl << std::endl;
@@ -56,11 +54,9 @@ int main()
B = mat_indexing(A, ri+1, ci);
std::cout << "A(ri+1,ci) =" << std::endl;
std::cout << B << std::endl << std::endl;
#if EIGEN_COMP_CXXVER >= 11
B = mat_indexing(A, ArrayXi::LinSpaced(13,0,12).unaryExpr([](int x){return x%4;}), ArrayXi::LinSpaced(4,0,3));
B = mat_indexing(A, Eigen::ArrayXi::LinSpaced(13,0,12).unaryExpr([](int x){return x%4;}), Eigen::ArrayXi::LinSpaced(4,0,3));
std::cout << "A(ArrayXi::LinSpaced(13,0,12).unaryExpr([](int x){return x%4;}), ArrayXi::LinSpaced(4,0,3)) =" << std::endl;
std::cout << B << std::endl << std::endl;
#endif
std::cout << "[main2]\n";
}