/// <summary>
/// Reads three-bytes signed value from the underlaying stream.
/// </summary>
/// <returns><see cref="int"/> read</returns>
/// <exception cref="IOException">Thrown when end of stream was reached and <see cref="Unsecure"/> is false.</exception>
public int Read24Int()
{
AssertRead(3, "Int");
return(BE ? ByteUtils.To24IntBE(buffer) : ByteUtils.To24IntLE(buffer));
}