public void TestOperator_Negation_i ()
{
Double r = 3432;
Double s = -6218;
Double t = -3432;
Double u = 6218;
var a = new Quaternion(r, s, t, u);
var b = new Quaternion(u, t, s, r);
var c = new Quaternion(t, u, r, s);
var d = new Quaternion(s, r, u, t);
this.TestNegation(a, c);
this.TestNegation(b, d);
}