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-() [2/4] DualNumber operator- ( DualNumber  a, double  b  ) 将对偶数与实数相减 将对偶数的实部与实数相减，返回一个新的对偶数对象。 参数 [in] a 对偶数 [in] b 实数 返回 返回对偶数与实数相减的结果