I->R and R->I without (rounding) errors

[Joe Horn]

Thanks, Claudio and Arno for your excellent suggestions about using the LongFloat library for user-adjustable accuracy. I *love* that library!

May I also suggest looking into the "ExtraFunc49+" library by Steen Schmidt. It performs many operations on integer-type objects blazingly fast, because it doesn't use the 50g's native integer math but rather uses its own math coded in C. For example, it finds the exact 5000th Fibonacci number in less than half a second (all 1045 digits of it). It returns the exact value of 1000! in 1/3 of a second. And so on. Essential for math on large integers.