scale method
Scale this by arg.
Implementation
void scale(double arg) {
  _v4storage[0] = _v4storage[0] * arg;
  _v4storage[1] = _v4storage[1] * arg;
  _v4storage[2] = _v4storage[2] * arg;
  _v4storage[3] = _v4storage[3] * arg;
}
    Scale this by arg.
void scale(double arg) {
  _v4storage[0] = _v4storage[0] * arg;
  _v4storage[1] = _v4storage[1] * arg;
  _v4storage[2] = _v4storage[2] * arg;
  _v4storage[3] = _v4storage[3] * arg;
}