base64_decode base64_encode blanks blanksN clamp Console convertTo Distance DistanceP2 fmod Geometry2DType GeometryType GetDuration LogStyle make_vec make_vec operator* operator* operator* operator* operator* operator* operator* operator* operator* operator* operator*= operator+ operator+ operator+ operator+ operator- operator- operator- operator- operator/ operator/ pow ScaleType ScriptFactory sgn tabs tabsN toDegrees toRadians toVector Vector3d Vector3f

operator-() [3/4] DualNumber operator- ( DualNumber  a, DualNumber  b  ) 将两个对偶数相减 将两个对偶数相减，返回一个新的对偶数对象，其实部和虚部分别是两个操作数相应部分的差。 参数 [in] a 被减数 [in] b 减数 返回 返回两个对偶数相减的结果