determinant method
Computes and returns the determinant of this matrix.
Implementation
double determinant() {
final te = storage;
final a = te[0],
b = te[1],
c = te[2],
d = te[3],
e = te[4],
f = te[5],
g = te[6],
h = te[7],
i = te[8];
return a * e * i -
a * f * h -
b * d * i +
b * f * g +
c * d * h -
c * e * g;
}