BigInt

comments in Spanish (Portuguese?) perhaps the code works, but the lack of comments make it difficult to understand in addition, given how densely woven C++ code is, there ought to be an algorithm detailing steps no overt explanation for why various operators are given mutiple forms (yes, if I was a five year veteran of C++ it would be obvious, however many who utilize sourceforge are newcomers) no overt glossary no mention of accuracy no method of estimating performance as impacted by ever larger number of digits comprise a big integer no mention of limits no overt function, SQRT() no overt function, Read_From_File() no overt function, Write_Into_File() please advise h-o-w-a-r-d-_-n-y-c y-a-h-o-o-d-o-t-c-o-m