// Copyright (C) 2009 International Business Machines and others.
// All Rights Reserved.
// This code is published under the Eclipse Public License.
//
// Authors:  Andreas Waechter, Frank E. Curtis         IBM    2009-06-12
//               (based on IpMc19TSymScalingMethod.cpp rev 1204)

#include "IpoptConfig.h"
#include "IpInexactTSymScalingMethod.hpp"
#include "IpTripletHelper.hpp"

namespace Ipopt
{
#if IPOPT_VERBOSITY > 0
static const Index dbg_verbosity = 0;
#endif

bool InexactTSymScalingMethod::InitializeImpl(
   const OptionsList& options,
   const std::string& prefix
)
{
   return true;
}

bool InexactTSymScalingMethod::ComputeSymTScalingFactors(
   Index         n,
   Index         nnz,
   const ipfint* airn,
   const ipfint* ajcn,
   const double* a,
   double*       scaling_factors
)
{
   DBG_START_METH("InexactTSymScalingMethod::ComputeTSymScalingFactors",
                  dbg_verbosity);

   const Index nx = IpData().curr()->x()->Dim();
   const Index ns = IpData().curr()->s()->Dim();
   const Index nc = IpData().curr()->y_c()->Dim();
   const Index nd = IpData().curr()->y_d()->Dim();

   for( Index i = 0; i < nx; i++ )
   {
      scaling_factors[i] = 1.;
   }
   scaling_factors += nx;

   SmartPtr<const Vector> scaling_vec = InexCq().curr_scaling_slacks();
   TripletHelper::FillValuesFromVector(ns, *scaling_vec, scaling_factors);
   scaling_factors += ns;

   for( Index i = 0; i < nc + nd; i++ )
   {
      scaling_factors[i] = 1.;
   }

   return true;
}

} // namespace Ipopt
