/// <summary>
/// Converts data produced by EncodeMod3Tight(int[]) back to an <c>int</c> array
/// </summary>
///
/// <param name="InputStream">The input stream containing the data to decode</param>
/// <param name="N">The number of coefficients</param>
///
/// <returns>The decoded array</returns>
public static int[] DecodeMod3Tight(MemoryStream InputStream, int N)
{
int size = (int)Math.Ceiling(N * Math.Log(3) / Math.Log(2) / 8);
byte[] arr = ArrayEncoder.ReadFullLength(InputStream, size);
return(DecodeMod3Tight(arr, N));
}
/// <summary>
/// Decodes data encoded with encodeModQ(int[], int) back to an <c>int</c> array.
/// <para><c>N</c> is the number of coefficients. <c>q</c> must be a power of <c>2</c>.
/// Ignores any excess bytes.</para>
/// </summary>
///
/// <param name="InputStream">An encoded ternary polynomial</param>
/// <param name="N">The number of coefficients</param>
/// <param name="Q">The modulus</param>
///
/// <returns>The decoded polynomial</returns>
public static int[] DecodeModQ(Stream InputStream, int N, int Q)
{
int qBits = 31 - IntUtils.NumberOfLeadingZeros(Q);
int size = (N * qBits + 7) / 8;
byte[] arr = ArrayEncoder.ReadFullLength(InputStream, size);
return(DecodeModQ(arr, N, Q));
}
