//
// 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#ifndef _FG_APPROACH_HXX
double angle_diff_deg( const double &a1, const double &a2);
+ void set_message(const string &s);
+
// ========================================================================
// get point2 given starting point1 and course and distance
// input: point1 = heading in degrees, distance