or zero if already
or zero if the root
Comment SET_ZERO [...] element are set to zero
sin_addr UDINT sin_zero
1E-15 SMC_VECTOR3D_ZERO [...] , 0, 0, 0, 1]) SMC_QUAT_ZERO [...] _MATRIX3_IDENTITY, vT := SMC_VECTOR3D_ZERO
(Zero). If x [...] (Zero) the state [...] TimingController ≠ 0 (Zero