public void Acos()
{
Complex cd1 = new Complex(1.1, -2.2);
Complex cd2 = new Complex(0, -2.2);
Complex cd3 = new Complex(1.1, 0);
Complex cd4 = new Complex(-1.1, 2.2);
ComplexFloat cf1 = new ComplexFloat(1.1f, -2.2f);
ComplexFloat cf2 = new ComplexFloat(0, -2.2f);
ComplexFloat cf3 = new ComplexFloat(1.1f, 0);
ComplexFloat cf4 = new ComplexFloat(-1.1f, 2.2f);
Complex cdt = ComplexMath.Acos(cd1);
Assert.AreEqual(cdt.Real, 1.1388414556, TOLERENCE);
Assert.AreEqual(cdt.Imag, 1.618, TOLERENCE);
cdt = ComplexMath.Acos(cd2);
Assert.AreEqual(cdt.Real, 1.571, TOLERENCE);
Assert.AreEqual(cdt.Imag, 1.530, TOLERENCE);
cdt = ComplexMath.Acos(cd3);
Assert.AreEqual(cdt.Real, 0, TOLERENCE);
Assert.AreEqual(cdt.Imag, 0.444, TOLERENCE);
cdt = ComplexMath.Acos(cd4);
Assert.AreEqual(cdt.Real, 2.004, TOLERENCE);
Assert.AreEqual(cdt.Imag, -1.618, TOLERENCE);
ComplexFloat cft = ComplexMath.Acos(cf1);
Assert.AreEqual(cft.Real, 1.138, TOLERENCE);
Assert.AreEqual(cft.Imag, 1.618, TOLERENCE);
cft = ComplexMath.Acos(cf2);
Assert.AreEqual(cft.Real, 1.571, TOLERENCE);
Assert.AreEqual(cft.Imag, 1.530, TOLERENCE);
cft = ComplexMath.Acos(cf3);
Assert.AreEqual(cft.Real, 0, TOLERENCE);
Assert.AreEqual(cft.Imag, 0.444, TOLERENCE);
cft = ComplexMath.Acos(cf4);
Assert.AreEqual(cft.Real, 2.004, TOLERENCE);
Assert.AreEqual(cft.Imag, -1.618, TOLERENCE);
}