double PointingModel::Sign ( double  val, double  alt  ) const

inline

Definition at line 263 of file drivectrl.cc.

    {
        // Some pointing corrections are defined as Delta ZA, which
        // is (P. Wallace) defined [0,90]deg while Alt is defined
        // [0,180]deg
        return (M_PI/2-alt < 0 ? -val : val);
    }