Fast-BigInteger-To-BinaryString-and-Benchmarks.This project was to test several other BigInteger to Binary String methods and then to build my own. Of the ones that I test this one is about 5X faster then any other out there. It also supports zero and negative numbers. The function is fast because: (1) it minimally allocates memory (2) does not make many calls to other functions, and (3) carefully copies over bit to byte with as minimal work as possible.