transpose method Null safety

void transpose()

Transpose this.

Implementation

void transpose() {
  double temp;
  temp = _m3storage[3];
  _m3storage[3] = _m3storage[1];
  _m3storage[1] = temp;
  temp = _m3storage[6];
  _m3storage[6] = _m3storage[2];
  _m3storage[2] = temp;
  temp = _m3storage[7];
  _m3storage[7] = _m3storage[5];
  _m3storage[5] = temp;
}