public void GetBit()
{
string AsString;
bool IsBitSet;
using mpz_t a = new mpz_t("A000000000000000000200000000001", 16);
AsString = a.ToString(16).ToUpper();
Assert.AreEqual("A000000000000000000200000000001", AsString);
IsBitSet = a.GetBit(45);
Assert.IsTrue(IsBitSet);
IsBitSet = a.GetBit(46);
Assert.IsFalse(IsBitSet);
}