/// <summary>
/// creates a number using a digit and an order of magnitude
/// </summary>
/// <param name="orderOfMag"></param>
/// <param name="digit"></param>
/// <returns></returns>
public static IDigitNode GetDigitAtMagnitude(this INumeric thisNumber,
Numeric orderOfMag)
{
if (thisNumber == null)
throw new ArgumentNullException("thisNumber");
if (orderOfMag == null)
throw new ArgumentNullException("orderOfMag");
if (orderOfMag.IsEqualTo(orderOfMag.GetCompatibleZero()))
return thisNumber.ZerothDigit;
IDigitNode rv = null;
if (orderOfMag.IsPositive)
{
rv = thisNumber.ZerothDigit;
orderOfMag.PerformThisManyTimes(x =>
{
if (rv != null)
rv = rv.NextDigit();
});
}
else
{
rv = thisNumber.ZerothDigit;
orderOfMag.GetNegativeOf().PerformThisManyTimes(x =>
{
if (rv != null)
rv = rv.PreviousDigit();
});
}
return rv;
}
