func TestFastFourierTrasnform(t *testing.T) {
xi, _ := Matrix.FromFile("test/tDFT.txt")
Xi, _ := Matrix.FromFile("test/tFFT.txt")
Xip, _ := FFT(xi, 8)
if !Matrix.AlmostEqual(Xi, Xip) {
t.Errorf("The DFT has to be \n", Xi.ToString(), Xip.ToString())
}
}
func TestInverseFastFourierTrasnform(t *testing.T) {
xi, _ := Matrix.FromFile("test/tDFT.txt")
Xi, _ := Matrix.FromFile("test/tFFT.txt")
xip, _ := IFFT(Xi, 8)
if !Matrix.AlmostEqual(xi, xip) {
t.Errorf("The DFT has to be %v", xi.ToString(), xip.ToString())
}
}
func BenchmarkFFT(b *testing.B) {
xi, _ := Matrix.FromFile("test/BMFFT.txt")
b.ResetTimer()
for i := 0; i < b.N; i++ {
FFT(xi, 32768)
}
}