FFT.ForwardReal() should ensure the input length is a power of 2

[swharden]

one overload does, the other does not

FftSharp/src/FftSharp/FFT.cs

Lines 51 to 62 in 6f341bb

	/// <summary>
	/// Calculate FFT and return just the real component of the spectrum
	/// </summary>
	public static System.Numerics.Complex[] ForwardReal(System.Numerics.Complex[] samples)
	{
	if (!FftOperations.IsPowerOfTwo(samples.Length))
	throw new ArgumentException($"{nameof(samples)} length must be a power of 2");
	System.Numerics.Complex[] realBuffer = new System.Numerics.Complex[samples.Length / 2 + 1];
	FftOperations.RFFT_WithoutChecks(realBuffer, samples);
	return realBuffer;
	}

FftSharp/src/FftSharp/FFT.cs

Lines 64 to 74 in 6f341bb

	/// <summary>
	/// Calculate FFT and return just the real component of the spectrum
	/// </summary>
	public static System.Numerics.Complex[] ForwardReal(double[] samples)
	{
	System.Numerics.Complex[] buffer = samples.ToComplexArray();
	Forward(buffer);
	System.Numerics.Complex[] real = new System.Numerics.Complex[samples.Length / 2 + 1];
	Array.Copy(buffer, 0, real, 0, real.Length);
	return real;
	}

[swharden]

Nevermind, ForwardReal() calls Forward() which does the check there