C# unsafe value type array to byte array conversions

Question

I use an extension method to convert float arrays into byte arrays:

public static unsafe byte[] ToByteArray(this float[] floatArray, int count)
{
    int arr         


        

Answer 1

This question is the reverse of What is the fastest way to convert a float[] to a byte[]?.

I've answered with a union kind of hack to skip the whole copying of the data. You could easily reverse this (length = length *sizeof(Double).