public unsafe static void ForwardTransform(Complex *buffer, int length, bool rearrange = true)
{
if (length <= 128)
{
Fourier.FourierForwardTransformRotator(buffer, length);
}
else if (length <= 65536)
{
Fourier.FourierForwardTransformLut(buffer, length, Fourier._lut, 16);
}
else if (rearrange)
{
Fourier.FourierForwardTransformRotator(buffer, length);
}
else
{
Fourier.FourierForwardTransformSinCos(buffer, length);
}
if (rearrange)
{
int num = length / 2;
for (int i = 0; i < num; i++)
{
int num2 = num + i;
Complex complex = buffer[i];
buffer[i] = buffer[num2];
buffer[num2] = complex;
}
}
}