/// <summary>
/// Gets double normalization for read and write functions on the <paramref name="sndfile"/> file.
/// </summary>
/// <param name="sndfile">Audio file to retrieve double normalization for.</param>
/// <returns>Current double normalization state.</returns>
public bool GetNormDouble(IntPtr sndfile)
{
if (sndfile == IntPtr.Zero)
{
throw new ArgumentException("File handle is invalid/closed.");
}
return(m_Api.GetNormDouble(sndfile));
}