code: public Vector3f cross(float x, float y, float z) {
          return cross(x, y, z, thisOrNew());
      }
docs: Set this vector to be the cross product of itself and <code>(x, y, z)</code>.
  
  @param x
  the x component of the other vector
  @param y
  the y component of the other vector
  @param z
  the z component of the other vector
  @return a vector holding the result