subspan

Header: <pressio/expressions.hpp>

API

namespace pressio {

template<class T>
/*impl defined*/ subspan(T & operand,
                         std::pair<std::size_t, std::size_t> rowsRange,
                         std::pair<std::size_t, std::size_t> colsRange);

} // end namespace pressio

Description

• Takes in an operand, as well as the rowsRange and colsRange intervals that will be used in each dimension

  • operand is either:

    • an Eigen dense matrix, pressio::is_dense_matrix_eigen<T>::value == true

    • a Kokkos rank-2 view, i.e. pressio::is_dense_matrix_kokkos<T>::value == true

• Returns an expression object that represents a subspan of the operand.