/*
Copyright_License {

  XCSoar Glide Computer - http://www.xcsoar.org/
  Copyright (C) 2000-2015 The XCSoar Project
  A detailed list of copyright holders can be found in the file "AUTHORS".

  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License
  as published by the Free Software Foundation; either version 2
  of the License, or (at your option) any later version.

  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.
}
*/

#include "ClimbHistory.hpp"
#include "Util/Macros.hpp"

#include <algorithm>

void
ClimbHistory::Clear()
{
  std::fill_n(vario, ARRAY_SIZE(vario), fixed(0));
  std::fill_n(count, ARRAY_SIZE(count), 0);
}

void
ClimbHistory::Add(unsigned speed, fixed _vario)
{
  if (speed >= SIZE)
    return;

  if (count[speed] >= 0x8000) {
    /* prevent integer overflow */
    vario[speed] /= 2;
    count[speed] /= 2;
  }

  vario[speed] += _vario;
  ++count[speed];
}
