Org.BouncyCastle.Math.BigInteger.Pow C# (CSharp) Method

		public BigInteger Pow(int exp)
		{
			if (exp < 0)
			{
				throw new ArithmeticException("Negative exponent");
			}

			if (exp == 0)
			{
				return One;
			}

			if (sign == 0 || Equals(One))
			{
				return this;
			}

			BigInteger y = One;
			BigInteger z = this;

			for (;;)
			{
				if ((exp & 0x1) == 1)
				{
					y = y.Multiply(z);
				}
				exp >>= 1;
				if (exp == 0) break;
				z = z.Multiply(z);
			}

			return y;
		}

		static BigInteger()
		{
            Zero = new BigInteger(0, ZeroMagnitude, false);
            Zero.nBits = 0; Zero.nBitLength = 0;

            SMALL_CONSTANTS[0] = Zero;
            for (uint i = 1; i < SMALL_CONSTANTS.Length; ++i)
            {
                SMALL_CONSTANTS[i] = CreateUValueOf(i);
            }

            One = SMALL_CONSTANTS[1];
            Two = SMALL_CONSTANTS[2];
            Three = SMALL_CONSTANTS[3];
            Ten = SMALL_CONSTANTS[10];

            radix2 = ValueOf(2);
            radix2E = radix2.Pow(chunk2);

            radix8 = ValueOf(8);
            radix8E = radix8.Pow(chunk8);

            radix10 = ValueOf(10);
		    radix10E = radix10.Pow(chunk10);

            radix16 = ValueOf(16);
            radix16E = radix16.Pow(chunk16);

            primeProducts = new int[primeLists.Length];

			for (int i = 0; i < primeLists.Length; ++i)
			{
				int[] primeList = primeLists[i];
				int product = primeList[0];
				for (int j = 1; j < primeList.Length; ++j)
				{
					product *= primeList[j];
				}
				primeProducts[i] = product;
			}
		}