transpose method

Implementation

void transpose() {
  double temp;
  temp = _m4storage[4];
  _m4storage[4] = _m4storage[1];
  _m4storage[1] = temp;
  temp = _m4storage[8];
  _m4storage[8] = _m4storage[2];
  _m4storage[2] = temp;
  temp = _m4storage[12];
  _m4storage[12] = _m4storage[3];
  _m4storage[3] = temp;
  temp = _m4storage[9];
  _m4storage[9] = _m4storage[6];
  _m4storage[6] = temp;
  temp = _m4storage[13];
  _m4storage[13] = _m4storage[7];
  _m4storage[7] = temp;
  temp = _m4storage[14];
  _m4storage[14] = _m4storage[11];
  _m4storage[11] = temp;
}