public static void Transform(uint bits, ComplexFloat[] data, Direction direction)
{
FPGA.Const <uint> n = GeneratorTools.ArrayLength(bits);
FPGA.Const <float> nFloat = GeneratorTools.FloatArrayLength(bits);
uint mask = GeneratorTools.Mask(bits);
ComplexFloat[] transformed = new ComplexFloat[data.Length];
float[] cosMap = GeneratorTools.CosArray(n, direction);
var tmp = new ComplexFloat();
// for each destination element
for (uint i = 0; i < n; i++)
{
tmp.Re = 0.0f;
tmp.Im = 0.0f;
// sum source elements
for (uint j = 0; j < n; j++)
{
ComplexFloat source = new ComplexFloat();
source = data[j];
FTTools.RotateAndAdd(cosMap, bits, ref source, ref tmp, i * j);
}
transformed[i] = tmp;
}
FTTools.CopyAndNormalize(bits, transformed, data, direction, ref tmp);
}
public void CosArray8PointsForward()
{
var cos45 = (float)(Math.Sqrt(2) / 2);
var arr = GeneratorTools.CosArray(8, Direction.Forward);
var expected = new float[] { 1, cos45, 0, -cos45, -1, -cos45, 0, cos45 };
}