Lucene.Net.Util.TestMathUtil.TryGetGcd C# (CSharp) Метод

        private static bool TryGetGcd(long a, long b, out long result)
        {
            result = 0;
            var c = System.Numerics.BigInteger.GreatestCommonDivisor(a, b);
            if (c <= long.MaxValue && c >= long.MinValue)
            {
                result = (long)c;
                return true;
            }
            return false; // would overflow
        }