multiply method
Multiply this with arg
and store it in this.
Implementation
void multiply(Matrix2 arg) {
final m00 = _m2storage[0];
final m01 = _m2storage[2];
final m10 = _m2storage[1];
final m11 = _m2storage[3];
final argStorage = arg._m2storage;
final n00 = argStorage[0];
final n01 = argStorage[2];
final n10 = argStorage[1];
final n11 = argStorage[3];
_m2storage[0] = (m00 * n00) + (m01 * n10);
_m2storage[2] = (m00 * n01) + (m01 * n11);
_m2storage[1] = (m10 * n00) + (m11 * n10);
_m2storage[3] = (m10 * n01) + (m11 * n11);
}