data type long enough to store 2^64

I can't seem to find a data type that can store integers up to length 2^64. Can anyone point me in the right direction?

Edit:

Unsigned long long int works, but it seems to not be working with the modulus on other unsigned long long ints.

Here is a linkhttp://home.att.net/~jackklein/c/inttypes.html#limits

Quote:

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Originally Posted by yahn

I can't seem to find a data type that can store integers up to length 2^64. Can anyone point me in the right direction?

Edit:

Unsigned long long int works, but it seems to not be working with the modulus on other unsigned long long ints.

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Probably depends on which compiler you are using. In gcc 3.4.5, it works fine to do x % y where x and/or y is a long long.

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Mats

There is always GMP.