CPPLapack Code

//=============================================================================
/*! return transposed dssmatrix */
inline _dssmatrix t(const dssmatrix& mat)
{
#ifdef  CPPL_VERBOSE
  std::cerr << "# [MARK] t(const dssmatrix&)" << std::endl;
#endif//CPPL_VERBOSE
  
#ifdef  CPPL_DEBUG
  std::cerr << "[WARNING] t(const dssmatrix&) This function call has no effect since the matrix is symmetric." << std::endl;
#endif//CPPL_DEBUG

  dssmatrix newmat(mat);
  return _(newmat);
}

///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////

//=============================================================================
/*! search the index of element having the largest absolute value
  in 0-based numbering system */
inline void idamax(long& i, long& j, const dssmatrix& mat)
{
#ifdef  CPPL_VERBOSE
  std::cerr << "# [MARK] idamax(long&, long&, const dssmatrix&)" << std::endl;
#endif//CPPL_VERBOSE
  
  std::vector<dcomponent>::const_iterator itx(mat.Data.begin());
  double vmax(0);
  for(std::vector<dcomponent>::const_iterator it=mat.Data.begin(); it!=mat.Data.end(); it++){
    if(vmax < it->v){
      vmax=fabs(it->v);
      itx=it;
    }
  }
  i=itx->i;
  j=itx->j;
}

//=============================================================================
/*! return its largest absolute value */
inline double damax(const dssmatrix& mat)
{
#ifdef  CPPL_VERBOSE
  std::cerr << "# [MARK] damax(const dssmatrix&)" << std::endl;
#endif//CPPL_VERBOSE
  
  std::vector<dcomponent>::const_iterator itx(mat.Data.begin());
  double vmax(0);
  for(std::vector<dcomponent>::const_iterator it=mat.Data.begin(); it!=mat.Data.end(); it++){
    if(vmax < it->v){
      vmax=fabs(it->v);
      itx=it;
    }
  }
  return itx->v;
}