very large ints

[i_like_pi]

Does anybody know how to use integers larger than the "long long int" type? I have tried using arrays of ints, but mathematical functions are impossible.

Thanks in advance. :cheesy:

[Infarction]

You'll need a bignum library. I've seen mention of the Gnu Multiple Precision library before, so you might give that a shot.

[i_like_pi]

Thanks, that's exactly what I need.

Just out of curiosity, does anybody know how it works? (i.e. how it stores the numbers and how it performs math functions on them)

Thanks! :cheesy:

[i_like_pi]

Oh, and also, how do you use it in windows?

[iamthwee]

I tried using that for windows once, and in the end just gave up! Ended up using java's bigNum class.

[i_like_pi]

Going back to my original question, is there a way to create my own bigNum class, and use it like an int?

[Salem]

> Just out of curiosity, does anybody know how it works?
Read the documentation and download the code.

[Salem]

> is there a way to create my own bigNum class, and use it like an int?
I assume they taught you basic math at school, like how to add multi-digit numbers together, how to subtract them, how to multiply them etc.

It's the same thing, except you deal with multiple bytes.

[i_like_pi]

Yes, but how would you use the bigNum class in-place of an int? For example, if you wanted to use the pow() function...

bigNum i;
pow(i,3);

wouldn't work.

[iamthwee]

Of course it wouldn't work, you have to create your own pow function/method for your big integer class you have created.

[i_like_pi]

Ok, your right. Well, I had better get started!

Thanks.