/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */

/*

 * Copyright (c) 2011 Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation;

 *

 * This program 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 General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 * Author: Manuel Requena <manuel.requena@cttc.es>

 * Author: Marco Miozzo <marco.miozzo@cttc.es>

 */

#include "lte-common.h"

#include <ns3/log.h>

#include <ns3/abort.h>

NS_LOG_COMPONENT_DEFINE ("LteCommon");

namespace ns3 {

LteFlowId_t::LteFlowId_t ()

{

}

LteFlowId_t::LteFlowId_t (const uint16_t a, const uint8_t b)

  : m_rnti (a),

    m_lcId (b)

{

}

bool

operator == (const LteFlowId_t &a, const LteFlowId_t &b)

{

  return ( (a.m_rnti == b.m_rnti) && (a.m_lcId == b.m_lcId) );

}

bool

operator < (const LteFlowId_t& a, const LteFlowId_t& b)

{

  return ( (a.m_rnti < b.m_rnti) || ( (a.m_rnti == b.m_rnti) && (a.m_lcId < b.m_lcId) ) );

}

ImsiLcidPair_t::ImsiLcidPair_t ()

{

}

ImsiLcidPair_t::ImsiLcidPair_t (const uint64_t a, const uint8_t b)

  : m_imsi (a),

    m_lcId (b)

{

}

bool

operator == (const ImsiLcidPair_t &a, const ImsiLcidPair_t &b)

{

  return ((a.m_imsi == b.m_imsi) && (a.m_lcId == b.m_lcId));

}

bool

operator < (const ImsiLcidPair_t& a, const ImsiLcidPair_t& b)

{

  return ((a.m_imsi < b.m_imsi) || ((a.m_imsi == b.m_imsi) && (a.m_lcId

                                                               < b.m_lcId)));

}

uint16_t

LteFfConverter::double2fpS11dot3 (double val)

{

  // convert from double to fixed point notation Sxxxxxxxxxxx.xxx

  int16_t valFp = (int16_t)(val * pow (2, 3));

  return (valFp);

}

double

LteFfConverter::fpS11dot3toDouble (uint16_t val)

{

  // convert from fixed point notation Sxxxxxxxxxxx.xxx to double

  double valD = ((int16_t)val) / pow (2, 3);

  return (valD);

}

double 

LteFfConverter::getMinFpS11dot3Value ()

{

  return (-4096);        // -4096 = 0x8000 = 1000 0000 0000 0000 b

}

//static double g_lowestFpS11dot3Value = -4096; // 0x8001 (1000 0000 0000 0000)

uint32_t BufferSizeLevelBsrTable[64] = {

  0, 10, 12, 14, 17, 19, 22, 26, 31, 36, 42, 49, 57, 67, 78, 91, 

  107, 125, 146, 171, 200, 234, 274, 321, 376, 440, 515, 603, 

  706, 826, 967, 1132, 1326, 1552, 1817, 2127, 2490, 2915, 3413,

  3995, 4677, 5476, 6411, 7505, 8787, 10287, 12043, 14099, 16507,

  19325, 22624, 26487, 31009, 36304, 42502, 49759, 58255,

  68201, 79846, 93749, 109439, 128125, 150000, 150000

};

uint32_t

BufferSizeLevelBsr::BsrId2BufferSize (uint8_t val)

{

  NS_ABORT_MSG_UNLESS (val >= 0 && val < 64, "val = " << val << " is out of range");

  return BufferSizeLevelBsrTable[val];

}

uint8_t

BufferSizeLevelBsr::BufferSize2BsrId (uint32_t val)

{

  int index = 0;

  if (BufferSizeLevelBsrTable[63] < val)

    {

      index = 63;

    }

  else

    {

      while (BufferSizeLevelBsrTable[index] < val)

        {

          NS_ASSERT (index < 64);

          index++;

        }

    }

  return (index);

}

}; // namespace ns3