Defines accuracy for truncation of low rank blocks.

#include <TTruncAcc.hh>

Inheritance diagram for TTruncAcc:

Public Member Functions
	TTruncAcc ()

	TTruncAcc (const size_t k, const double absolute_eps=CFG::Arith::abs_eps)

	TTruncAcc (const double relative_eps, const double absolute_eps=CFG::Arith::abs_eps)

	TTruncAcc (const TTruncAcc &ta)

template<typename T >
size_t	trunc_rank (const BLAS::Vector< T > &sv) const

virtual const TTruncAcc &	acc (const TBlockCluster *) const
	return accuracy description for individual subblock

virtual const TTruncAcc &	acc (const TMatrix *) const
	return accuracy description for individual submatrix

const TTruncAcc &	operator() (const TBlockCluster *bc) const
	abbreviation via () operator

const TTruncAcc &	operator() (const TMatrix *M) const
	abbreviation via () operator

size_t	rank () const
	return fixed rank

size_t	max_rank () const
	return maximal rank

double	rel_eps () const
	return relative accuracy

double	abs_eps () const
	return absolute accuracy

bool	is_fixed_rank () const
	return true if accuracy is fixed rank

bool	is_exact () const
	return true if accuracy is "exact"

void	set_max_rank (const size_t k)
	set maximal rank in truncation

TTruncAcc &	operator= (const TTruncAcc &ta)
	copy operator

virtual std::string	to_string () const
	return string representation

Constructor & Destructor Documentation

TTruncAcc ( )

inline

construct accuracy object for exact truncation

TTruncAcc	(	const size_t	k,
		const double	absolute_eps = `CFG::Arith::abs_eps`
	)

inline

construct accuracy object for fixed rank truncation

TTruncAcc	(	const double	relative_eps,
		const double	absolute_eps = `CFG::Arith::abs_eps`
	)

inline

construct accuracy object for fixed accuracy truncation

TTruncAcc ( const TTruncAcc & ta )

inline

copy constructor

Member Function Documentation

size_t trunc_rank ( const BLAS::Vector< T > & sv ) const

return truncation rank based on internal strategy and given singular values sv