/// <summary>Initializes a new instance of the <see cref="OneDimFractionalFourierTransformationRealAlpha"/> class.
/// </summary>
/// <param name="alpha">The parameter \alpha of the Fractional Fast Fourier Transformation.</param>
/// <param name="oneDimFourierTransformationFactory">The one-dimensional Fourier transformation factory.</param>
/// <param name="length">The length, i.e. the number of (complex) Fourier coefficients.</param>
internal OneDimFractionalFourierTransformationRealAlpha(int length, double alpha, IOneDimFourierTransformationFactory oneDimFourierTransformationFactory)
{
if (length <= 0)
{
throw new ArgumentException(String.Format(ExceptionMessages.ArgumentOutOfRangeGreater, "Length <" + length + ">", 0));
}
m_Length = length;
m_ForwardPreFactor = new Complex[length];
m_BackwardPreFactor = new Complex[length];
int n = 2 * length;
m_FourierTransformation = oneDimFourierTransformationFactory.Create(n);
m_ForwardTransformedVectorZ = new Complex[n];
m_BackwardTransformedVectorZ = new Complex[n];
SetParameterAlpha(alpha);
}
