pairinteraction::utils Namespace Reference

Data Structures
struct	hash
	Hash function. More...
struct	hash< Parity >
struct	hash< std::array< T, N > >
struct	hash< std::complex< T > >
struct	hash< std::vector< T > >

Functions
bool	is_sorting (TransformationType label)
template<typename T >
void	hash_combine (std::size_t &seed, T const &v)
	Combine hashes. More...
template<typename It >
std::size_t	hash_range (It first, It last)
	Combine hashes of values in a range. More...
size_t	get_linearized_id_in_database (size_t id, double quantum_number_m)
template<typename Scalar >
Eigen::SparseMatrix< Scalar, Eigen::RowMajor >	calculate_tensor_product (const std::shared_ptr< const BasisPair< Scalar > > &basis_initial, const std::shared_ptr< const BasisPair< Scalar > > &basis_final, const Eigen::SparseMatrix< Scalar, Eigen::RowMajor > &matrix1, const Eigen::SparseMatrix< Scalar, Eigen::RowMajor > &matrix2)
template Eigen::SparseMatrix< double, Eigen::RowMajor >	calculate_tensor_product (const std::shared_ptr< const BasisPair< double > > &, const std::shared_ptr< const BasisPair< double > > &, const Eigen::SparseMatrix< double, Eigen::RowMajor > &, const Eigen::SparseMatrix< double, Eigen::RowMajor > &)
template Eigen::SparseMatrix< std::complex< double >, Eigen::RowMajor >	calculate_tensor_product (const std::shared_ptr< const BasisPair< std::complex< double > > > &, const std::shared_ptr< const BasisPair< std::complex< double > > > &, const Eigen::SparseMatrix< std::complex< double >, Eigen::RowMajor > &, const Eigen::SparseMatrix< std::complex< double >, Eigen::RowMajor > &)

Variables
constexpr size_t	OFFSET = 500
constexpr std::string_view	SQL_TERM_FOR_LINEARIZED_ID_IN_DATABASE = "id*1000+(2*m+500)::bigint"

Function Documentation

calculate_tensor_product() [1/3]

template Eigen::SparseMatrix< double, Eigen::RowMajor > pairinteraction::utils::calculate_tensor_product	(	const std::shared_ptr< const BasisPair< double > > &	,
		const std::shared_ptr< const BasisPair< double > > &	,
		const Eigen::SparseMatrix< double, Eigen::RowMajor > &	,
		const Eigen::SparseMatrix< double, Eigen::RowMajor > &
	)

calculate_tensor_product() [2/3]

template<typename Scalar >

Eigen::SparseMatrix< Scalar, Eigen::RowMajor > pairinteraction::utils::calculate_tensor_product	(	const std::shared_ptr< const BasisPair< Scalar > > &	basis_initial,
		const std::shared_ptr< const BasisPair< Scalar > > &	basis_final,
		const Eigen::SparseMatrix< Scalar, Eigen::RowMajor > &	matrix1,
		const Eigen::SparseMatrix< Scalar, Eigen::RowMajor > &	matrix2
	)

Definition at line 20 of file tensor.cpp.

Referenced by pairinteraction::BasisPair< Scalar >::get_matrix_elements().

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calculate_tensor_product() [3/3]

template Eigen::SparseMatrix< std::complex< double >, Eigen::RowMajor > pairinteraction::utils::calculate_tensor_product	(	const std::shared_ptr< const BasisPair< std::complex< double > > > &	,
		const std::shared_ptr< const BasisPair< std::complex< double > > > &	,
		const Eigen::SparseMatrix< std::complex< double >, Eigen::RowMajor > &	,
		const Eigen::SparseMatrix< std::complex< double >, Eigen::RowMajor > &
	)

get_linearized_id_in_database()

size_t pairinteraction::utils::get_linearized_id_in_database ( size_t  id, double  quantum_number_m  )

inline

Definition at line 18 of file id_in_database.hpp.

References OFFSET.

Referenced by pairinteraction::Database::get_ket().

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hash_combine()

template<typename T >

void pairinteraction::utils::hash_combine ( std::size_t &  seed, T const &  v  )

inline

Combine hashes.

@function hash_combine

The implementation of hash_combine is copied from Boost but simplified.

Parameters

seed	start hash
v	value whose hash is to be added to seed

Template Parameters

T	type to be hashed

Definition at line 43 of file hash.hpp.

Referenced by pairinteraction::Database::Database(), hash_range(), pairinteraction::Ket::hash::operator()(), pairinteraction::KetAtom::hash::operator()(), pairinteraction::KetPair< Scalar >::hash::operator()(), and pairinteraction::utils::hash< std::complex< T > >::operator()().

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hash_range()

template<typename It >

std::size_t pairinteraction::utils::hash_range ( It  first, It  last  )

inline

Combine hashes of values in a range.

@function hash_range

Parameters

first	forward iterator
last	forward iterator

Returns

combined hash

Template Parameters

It	forward iterator

Definition at line 62 of file hash.hpp.

References hash_combine().

Referenced by pairinteraction::utils::hash< std::array< T, N > >::operator()(), and pairinteraction::utils::hash< std::vector< T > >::operator()().

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is_sorting()

bool pairinteraction::utils::is_sorting ( TransformationType  label )

inline

Definition at line 34 of file TransformationType.hpp.

References pairinteraction::IDENTITY, pairinteraction::SORT_BY_ENERGY, pairinteraction::SORT_BY_KET, pairinteraction::SORT_BY_PARITY, pairinteraction::SORT_BY_QUANTUM_NUMBER_F, and pairinteraction::SORT_BY_QUANTUM_NUMBER_M.

Referenced by pairinteraction::Basis< Derived >::perform_blocks_checks(), pairinteraction::Basis< Derived >::perform_sorter_checks(), and pairinteraction::Basis< Derived >::transformed().

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Variable Documentation

OFFSET

constexpr size_t pairinteraction::utils::OFFSET = 500

constexpr

Definition at line 10 of file id_in_database.hpp.

Referenced by get_linearized_id_in_database().

SQL_TERM_FOR_LINEARIZED_ID_IN_DATABASE

constexpr std::string_view pairinteraction::utils::SQL_TERM_FOR_LINEARIZED_ID_IN_DATABASE = "id*1000+(2*m+500)::bigint"

constexpr

Definition at line 15 of file id_in_database.hpp.

Referenced by pairinteraction::Database::get_basis().