static object Expt10(int tnum)
{
if (tnum < 0)
{
return(new Fraction(1, BigInteger.Pow(10, (uint)-tnum)));
}
return(BigInteger.Pow(TEN, (uint)tnum));
}
/// <summary>
/// Multiply a BigInteger by the given power of ten.
/// </summary>
/// <param name="number">The BigInteger to multiply by a power of ten and replace with the product</param>
/// <param name="power">The power of ten to multiply it by</param>
private static void MultiplyByPowerOfTen(ref BigInteger number, uint power)
{
var powerOfTen = BigInteger.Pow(BigTen, power);
number = number * powerOfTen;
}
/// <summary>
/// Multiply a BigInteger by the given power of two.
/// </summary>
/// <param name="number">The BigInteger to multiply by a power of two and replace with the product</param>
/// <param name="shift">The power of two to multiply it by</param>
private static void ShiftLeft(ref BigInteger number, uint shift)
{
var powerOfTwo = BigInteger.Pow(BigTwo, shift);
number = number * powerOfTwo;
}