MongoDB.Bson.Serialization.BsonClassMapSerializer.FastMemberMapHelper.GetLeastSignificantBit C# (CSharp) Метод

            public static int GetLeastSignificantBit(uint bitBlock)
            {
                var leastSignificantBit = 1;
                if ((bitBlock & 65535) == 0)
                {
                    bitBlock >>= 16;
                    leastSignificantBit |= 16;
                }
                if ((bitBlock & 255) == 0)
                {
                    bitBlock >>= 8;
                    leastSignificantBit |= 8;
                }
                if ((bitBlock & 15) == 0)
                {
                    bitBlock >>= 4;
                    leastSignificantBit |= 4;
                }
                if ((bitBlock & 3) == 0)
                {
                    bitBlock >>= 2;
                    leastSignificantBit |= 2;
                }
                return leastSignificantBit - (int)(bitBlock & 1);
            }
        }