public static byte[] Encode(Float40 n)
{
var bytes = new byte[5];
bytes[0] = (byte)n.exp;
Array.Copy(BitConverter.GetBytes((uint)n.mantissa), 0, bytes, 1, 4);
if (n.negative)
{
bytes[4] |= 128;
}
return(bytes);
}
public static Float40 Decode(byte[] bytes)
{
if (bytes.Length < 5)
{
throw new ArgumentException("Source array is not long enough", nameof(bytes));
}
var n = new Float40();
n.exp = (sbyte)bytes[0];
long t = BitConverter.ToUInt32(bytes, 1);
n.mantissa = (t & 0x7fffffffL);
n.negative = (t & 0x80000000L) != 0;
return(n);
}