HLIBpro
2.9.1

ACA with full pivot search (complexity: O(n²)) More...
#include <TLowRankApx.hh>
Additional Inherited Members  
Public Member Functions inherited from TACA< T >  
virtual TMatrix *  build (const TBlockCluster *cl, const TTruncAcc &acc) const 
virtual TMatrix *  build (const TBlockIndexSet &block_is, const TTruncAcc &acc) const 
virtual bool  has_statistics () const 
indicate if algorithm provides statistics  
Full ACA tests <em>all</em> matrix coefficients in the search for the best cross. This results in a guaranteed approximation within the given accuracy. However, the costs are now quadratic in the size of the block.