// query the database for the specified fix, lon and lat are
// in degrees, elev is in meters
bool query_and_offset( const string& ident, double lon, double lat,
double elev, FGFix *f, double *heading,
double *dist );
// query the database for the specified fix, lon and lat are
// in degrees, elev is in meters
bool query_and_offset( const string& ident, double lon, double lat,
double elev, FGFix *f, double *heading,
double *dist );