/*
 *   GRacer
 *
 *   Copyright (C) 1999 Takashi Matsuda <matsu@users.sourceforge.net>
 *
 * 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 "gr_angle.h"
#include <math.h>


double
gr_angle_add_deg (double deg1, double deg2)
{
  return fmod (deg1 + deg2 + 5.0 * 180.0, 360.0) - 180.0;
}

double
gr_angle_add_rad (double rad1, double rad2)
{
  return fmod (rad1 + rad2 + M_PI, 2.0 * M_PI) - M_PI;
}