HugeMotherFuckingInt

I'm trying to write a HugeMotherFuckingInt processing library in C.

My first try, I stored the numbers as a char[] and computed them using basic arithmetic.

My second try, I stored the numbers as unsigned long char[]. This proved to be a faster, easier and clearer approach.

Still though, it seems to be a bit too slow.

What other data structures might result in faster execution of basic arithmetic +/*-?

Also, are there any algorithms to speed up the arithmetic operations themselves?

*enemy's? lol

I guess i should point out i'm using signed ints (Obv) to make a 'HugeUnsignedInt' .... (Not-so-Obv)

...If you actually tried to make one of these on your own (Without just copy-pasta-ing it) you might see some wisdom in them codes....

Its less than a days work.... of course its ugly...(keep in mind i have written one of these b4 // have an idea of the problems/ some solutions? already /// wasn't so fAST the first time around) 

...Search / Replace would clean it up easy enough??