Lidgren.Network.NetBigInteger.AddMagnitudes C# (CSharp) Method

        private static int[] AddMagnitudes(
			int[] a,
			int[] b)
        {
            int tI = a.Length - 1;
            int vI = b.Length - 1;
            long m = 0;

            while (vI >= 0)
            {
                m += ((long)(uint)a[tI] + (long)(uint)b[vI--]);
                a[tI--] = (int)m;
                m = (long)((ulong)m >> 32);
            }

            if (m != 0)
            {
                while (tI >= 0 && ++a[tI--] == 0)
                {
                }
            }

            return a;
        }