dh2compression.h

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/* ------------------------------------------------------------
 * This is the file "dh2compression.h" of the H2Lib package.
 * All rights reserved, Steffen Boerm 2015
 * ------------------------------------------------------------ */

#ifndef DH2COMPRESSION_H
#define DH2COMPRESSION_H

#include "dh2matrix.h"
#include "truncation.h"

/* ------------------------------------------------------------
 * Compute adaptive cluster bases for dense matrices
 * ------------------------------------------------------------ */

pdclusterbasis
buildrow_amatrix_dclusterbasis(pcamatrix G, pcdblock b,
             pctruncmode tm, real eps);

pdclusterbasis
buildcol_amatrix_dclusterbasis(pcamatrix G, pcdblock b,
             pctruncmode tm, real eps);

/* ------------------------------------------------------------
 * Approximate dense matrix in new cluster bases
 * ------------------------------------------------------------ */

void
collectdense_dh2matrix(pcamatrix a,
           pcdclusterbasis rb, uint rd,
           pcdclusterbasis cb, uint cd,
           pamatrix s);

void
projectdense_dh2matrix(pcamatrix a, pdh2matrix h2);

#endif