scaleByDouble method
Implementation
void scaleByDouble(double sx, double sy, double sz, double sw) {
storage[0] *= sx;
storage[1] *= sx;
storage[2] *= sx;
storage[3] *= sx;
storage[4] *= sy;
storage[5] *= sy;
storage[6] *= sy;
storage[7] *= sy;
storage[8] *= sz;
storage[9] *= sz;
storage[10] *= sz;
storage[11] *= sz;
storage[12] *= sw;
storage[13] *= sw;
storage[14] *= sw;
storage[15] *= sw;
}