Approximate all low-rank blocks by zero, e.g. for nearfield only. More...

#include <TLowRankApx.hh>

Inheritance diagram for TZeroLRApx< T_value >:

Public Member Functions
virtual std::unique_ptr< TMatrix< value_t > >	build (const TBlockIndexSet &bis, const TTruncAcc &acc) const
	return low rank matrix of rank 0

Public Member Functions inherited from TLowRankApx< T_value >
virtual std::unique_ptr< TMatrix< value_t > >	build (const TBlockCluster *bct, const TTruncAcc &acc) const

virtual bool	has_statistics () const
	indicate if algorithm provides statistics

Detailed Description

template<typename T_value>
class Hpro::TZeroLRApx< T_value >

     If only the near field blocks of a matrix should be computed,
     TZeroLRApx will do that by approximating all far field blocks
     by zero, e.g. a 0-rank low rank matrix.

Public Member Functions

Detailed Description