dense_transpose.h File Reference

Transposing a DenseTensor. More...

#include "inc/dense/dense.h"
#include "inc/dense/dense_iter.h"
#include "inc/dense/dense_transpose_r2.h"
#include "inc/util/limvec.h"
#include "inc/util/threads.h"
#include "inc/util/span.h"
#include "inc/util/toggle_enums.h"
#include "inc/util/pair.h"

Include dependency graph for dense_transpose.h:

This graph shows which files directly or indirectly include this file:

Namespaces
	syten
	Syten namespace.

Functions
template<typename Scalar >
void	syten::invertDiagonal (DenseTensor< 2, Scalar > &a, typename ScalarBase< Scalar >::type scale)
	Approximately inverts the diagonal elements of a square matrix in place, leaving zeros untouched and using a Lorentzian broadening, i.e. replacing \( x_{i,i} \to \frac{x_{i,i}}{x_{i,i}^2 + \varepsilon} \) with \( \varepsilon \) equal to SYTEN_BROADENING_EPSILON times the supplied scale, which should be the magnitude of the overall largest inverted singular value. More...
template<Rank rank, typename Scalar , TransposeMethod method = TransposeMethod::Default>
DenseTensor< rank, Scalar >	syten::multi_transpose (DenseTensor< rank, Scalar > const &in, ConstSpan< Index > perm, Conj do_conj=Conj::n())
	Standard entry point for the transposition of a syten::DenseTensor. More...
template<Rank rank, typename Scalar , TransposeMethod method = TransposeMethod::Default, typename Indices = std::make_index_sequence<(rank < 2 ? 0 : (rank - 2))>>
void	syten::transpose (ConstSpan< Scalar > const inp, MutSpan< Scalar > out, [[maybe_unused]] ConstSpan< Index > in_perm, [[maybe_unused]] ConstSpan< Index > in_dim, [[maybe_unused]] Conj do_conj=Conj::n(), [[maybe_unused]] bool do_checks=true)
	Entry point for transposition of a continuous array into another array. More...
template<Rank rank, typename Scalar >
DenseTensor< rank, Scalar >	syten::transpose_exchange (DenseTensor< rank, Scalar > const &a, ConstSpan< Index > const &axes, Conj conjugate=Conj::n())
	Transposes two axes of a dense tensor using DenseIter objects. More...
template<Rank rank, typename Scalar , TransposeMethod method = TransposeMethod::Default, Rank... Ranks>
void	syten::transpose_impl (ConstSpan< Scalar > const inp, MutSpan< Scalar > out, ConstSpan< Index > in_perm, ConstSpan< Index > in_dim, Conj do_conj=Conj::n(), bool do_checks=true, std::index_sequence< Ranks... >={})
	Implementation of syten::transpose() below. More...
template<Rank rank, typename Scalar >
void	syten::transpose_iter_rseq (ConstSpan< Scalar > const inp, MutSpan< Scalar > out, ConstSpan< IndexNumber > perm, ConstSpan< Index > dim, Conj do_conj=Conj::n())
	Dense tensor transposition using a DenseIterDual and reading sequentially. More...
template<Rank rank, typename Scalar >
void	syten::transpose_iter_wseq (ConstSpan< Scalar > const inp, MutSpan< Scalar > out, ConstSpan< IndexNumber > perm, ConstSpan< Index > dim, Conj do_conj=Conj::n())
	Dense tensor transposition using a DenseIterDual and writing sequentially. More...
template<Rank rank, typename Scalar >
void	syten::transpose_recursive (ConstSpan< Scalar > const inp, MutSpan< Scalar > out, ConstSpan< IndexNumber > in_perm, ConstSpan< Index > in_dim, Conj do_conj=Conj::n())
	Recursive dense tensor transposition. More...
template<Rank rank, typename Scalar >
void	syten::transpose_recursive_impl (ConstSpan< Scalar > const inp, MutSpan< Scalar > out, [[maybe_unused]] MutSpan< Scalar > workspace, [[maybe_unused]] ConstSpan< IndexNumber > perm, [[maybe_unused]] ConstSpan< Index > dim)
	Implementation of the recursive dense tensor transposition. More...

Detailed Description

Transposing a DenseTensor.