OEGeom3DSubtract

template<class T, class U>
void OEGeom3DSubtract(T *x, const U *p)
template<class T>
void OEGeom3DSubtract(T *x, const T *p, const T *q)

Three dimensional vector subtraction. The first form computes \(x-=p\) and the second form computes \(x = p - q\).