public void DivBinomTest()
{
//arrange
double TOL = 1E-10;
CPolynomial f = new CPolynomial(new Complex[] { 3, 0.2, new Complex(3, 8.2), -0.16, new Complex(2.3, 2), 0, 18.3466, 2000 });
Complex c = 346.34645;
Complex r, rtest;
//action
CPolynomial q = CPolynomial.DivBinom(f, c, out r);
f[0] -= r;
CPolynomial qtest = CPolynomial.DivBinom(f, c, out rtest);
//assert
Complex.Abs(rtest).Should().BeLessOrEqualTo(TOL);
q.Should().Be(qtest);
}