Mono.Math.BigInteger.Normalize C# (CSharp) Method

		private void Normalize ()
		{
			// Normalize length
			while (length > 0 && data [length-1] == 0) length--;

			// Check for zero
			if (length == 0)
				length++;
		}

            public static BigInteger RightShift(BigInteger bi, int n)
            {
                if (n == 0)
                {
                    return(new BigInteger(bi));
                }

                int w = n >> 5;
                int s = n & ((1 << 5) - 1);

                BigInteger ret = new BigInteger(Sign.Positive, bi.length - (uint)w + 1);
                uint       l   = (uint)ret.data.Length - 1;

                if (s != 0)
                {
                    uint x, carry = 0;

                    while (l-- > 0)
                    {
                        x           = bi.data[l + w];
                        ret.data[l] = (x >> n) | carry;
                        carry       = x << (32 - n);
                    }
                }
                else
                {
                    while (l-- > 0)
                    {
                        ret.data[l] = bi.data[l + w];
                    }
                }
                ret.Normalize();
                return(ret);
            }