AbstractLinAlgPack_SortByDescendingAbsValue.hpp

// @HEADER
// ***********************************************************************
// 
// Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
//                  Copyright (2003) Sandia Corporation
// 
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
// 
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//  
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//  
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA
// Questions? Contact Roscoe A. Bartlett (rabartl@sandia.gov) 
// 
// ***********************************************************************
// @HEADER

#ifndef SORT_BY_DESCENDING_ABS_VALUE_H
#define SORT_BY_DESCENDING_ABS_VALUE_H

#include <math.h>

#include "AbstractLinAlgPack_SpVectorClass.hpp"

namespace AbstractLinAlgPack {

class SortByDescendingAbsValue {
public:
  bool operator()( const AbstractLinAlgPack::SpVector::element_type& x
    , const AbstractLinAlgPack::SpVector::element_type& y ) const
  {
    return ::fabs(x.value()) > ::fabs(y.value());
  }
};  // end class AbsMultVal


} // end namespace AbstractLinAlgPack 

#endif  // SORT_BY_DESCENDING_ABS_VALUE_H