__int128 - What??

[LB]

Why does VC++ have an __int128 type but no way to use it? Apparently there are no official references to it at all. If I try to use it, it gives me errors about it not being used in the correct architecture.

What is it for, and is there any way I can use it? I'm just curios. I can easily use a bignum library (and I am).

[helios]

Because the IDE can be used with a compiler that can produce code for several architectures, one of which can store 128-bit integers.

My guess is that it's an x86-64 type. Note that if you choose to use it, your code will not run on x86 systems.