public IOperand GreaterThanOrEqualTo(IOperand rhs)
{
if (!(rhs is LongOperand))
throw new RPN_Exception("Argument invalid in LongOperand.>= : rhs");
BoolOperand oprResult = new BoolOperand("Result");
oprResult.Value = ((long)this.Value >= (long)((Operand)rhs).Value) ? true : false;
return oprResult;
}
}