121     ab->z = a->z + b->z;  in C_VECAdd()
190     a_b->z = a->z - b->z;  in C_VECSubtract()
259     dst->z = src->z * scale;  in C_VECScale()
325     mag = (src->x * src->x) + (src->y * src->y) + (src->z * src->z);  in C_VECNormalize()
333     unit->z = src->z * mag;  in C_VECNormalize()
413     sqmag = (v->x * v->x) + (v->y * v->y) + (v->z * v->z);  in C_VECSquareMag()
549     dot = (a->x * b->x) + (a->y * b->y) + (a->z * b->z);  in C_VECDotProduct()
613     vTmp.x =  ( a->y * b->z ) - ( a->z * b->y );  in C_VECCrossProduct()
614     vTmp.y =  ( a->z * b->x ) - ( a->x * b->z );  in C_VECCrossProduct()
615     vTmp.z =  ( a->x * b->y ) - ( a->y * b->x );  in C_VECCrossProduct()
620     axb->z = vTmp.z;  in C_VECCrossProduct()
720     aTmp.z = -a->z;  in C_VECHalfAngle()
724     bTmp.z = -b->z;  in C_VECHalfAngle()
779     uI.z = -( src->z );  in C_VECReflect()
793     dst->z = (2.0f * uN.z * cosA) - uI.z;  in C_VECReflect()
825     diff.z = a->z - b->z;  in C_VECSquareDistance()
827     return (diff.x * diff.x) + (diff.y * diff.y) + (diff.z * diff.z);  in C_VECSquareDistance()