I am writing a program in C for file compression. The method i am trying to use involves doing math on the file as if it were one long number. Can anyone recommend a bignum library that would not try to do all of that in ram, but rather let me do math with file pointers. any help would be appreciated, thanks in advance.
I doubt such a library exists. You could try mmap()ing the files in memory and see if you can do it that way.