public void ComputeTest_Impulse()
{
Complex[] data = new Complex[4];
data[0] = new Complex(0.25, 0);
data[1] = new Complex(0.25, 0);
data[2] = new Complex(0.25, 0);
data[3] = new Complex(0.25, 0);
var output = IFFT.Compute(data);
Assert.AreEqual(1, output[0].Real);
Assert.AreEqual(0, output[0].Imaginary);
for (int i = 1; i < data.Length; i++)
{
Assert.AreEqual(0, output[i].Real);
Assert.AreEqual(0, output[i].Imaginary);
}
}
public void ComputeTest_Impulse_Nyq_Bounded()
{
Complex[] data = new Complex[3];
data[0] = new Complex(0.25, 0);
data[1] = new Complex(0.25, 0);
data[2] = new Complex(0.25, 0);
var output = IFFT.Compute(data, true, true);
Assert.AreEqual(1, output[0].Real);
Assert.AreEqual(0, output[0].Imaginary);
for (int i = 1; i < output.Length; i++)
{
Assert.AreEqual(0, output[i].Real);
Assert.AreEqual(0, output[i].Imaginary);
}
Assert.AreEqual(4, output.Length);
//not scaled
data[0] = new Complex(1, 0);
data[1] = new Complex(1, 0);
data[2] = new Complex(1, 0);
output = IFFT.Compute(data, false, true);
Assert.AreEqual(1, output[0].Real);
Assert.AreEqual(0, output[0].Imaginary);
for (int i = 1; i < output.Length; i++)
{
Assert.AreEqual(0, output[i].Real);
Assert.AreEqual(0, output[i].Imaginary);
}
Assert.AreEqual(4, output.Length);
}